組裝 (DIY) 一臺顯示器 (4K 屏支持 4 畫面分屏 PBP 1080p x4)

首發日期 2025-04-26, 以下為原文內容:

家里的 PC 主機比較多, 如果同時開機, 顯示器就不夠用了. 因為窮, 窩租住的房間又很小, 放不下很多顯示器. 所以, 窩希望買一臺支持分屏功能的顯示器.

最好是 4K 分辨率 (3840x2160) 的屏幕, 然后 4 分屏 (有 4 個 DP 或 HDMI 輸入接口), 同時顯示 4 路 1080p (1920x1080) 畫面. 這樣, 一個 4K 顯示器還能同時充當 4 個 1080p 顯示器 !! 無論成本, 體積, 耗電等方面, 這都是極好的 !

然而, 當窩打開萬能的淘寶, 找了半天, 始終找不到合適的顯示器. 大部分 4K 顯示器只有 3 個 (或更少) 接口, 最多只能支持 2 分屏 (同時顯示 2 路畫面), 排除. 還有就是某 43 英寸顯示器, 商品介紹里面明確說明有 4 個接口, 并支持 4 分屏功能, 但是不僅價格太貴了, 體積也太大了, 排除. 還有就是所謂 “分屏器”, 比如 4 個 HDMI 輸入, 1 個 HDMI 輸出接顯示器, 但是這種盒子太貴了賣好幾百, 并且窩不想使用外接形式, 排除.

然后又在網上搜索半天, 并且問了多個 AI (聊天大語言模型), 都得不到結果. 哎, 又遇到了 知識的荒漠: 有些知識, 你很確定在地球上肯定存在, 但你就是得不到它 ! (這就很難受, 都氣哭了)

沒辦法, 沒有合適的商品, 那只能自己動手了: 購買配件, 組裝一臺顯示器 ! 經過一頓努力, 終于成功組裝出來一臺支持 4 分屏的低成本 4K 顯示器. 就讓這篇文章, 成為知識沙漠里面的一小塊綠洲吧.

(哼, 還不是因為老公霸占了顯示器, 導致窩沒有顯示器用, 只能再弄一個 ~ )

這里是窮人小水滴, 專注于窮人友好型低成本技術. (本文為 70 號作品. )

《顯示器的隱藏功能: 顯示數據通道命令接口 (DDC/CI)》 https://blog.csdn.net/secext2022/article/details/135726966
《香橙派 HDMI 顯示器 DDC/CI 踩坑記錄》 https://blog.csdn.net/secext2022/article/details/135762166
《低功耗低成本 PC (可更換內存條) 推薦 (筆記本, 小主機)》 https://blog.csdn.net/secext2022/article/details/146135064
《流浪 Linux: 外置 USB SSD 安裝 ArchLinux》 https://blog.csdn.net/secext2022/article/details/145413676

1 購買配件

組裝一臺顯示器只需要 4 個配件: (1) (液晶) 面板 (2) 驅動 (主控) 板 (3) 外殼 (4) 電源.

怎么樣, 是不是看起來很簡單 ?

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組裝顯示器配件清單 (共 887 元, 價格僅供參考):

液晶面板: 京東方 MV270QUM-N60 (27 英寸 4K 60Hz)
驅動板: JRY-W9UHD-NV2
顯示器塑料外殼 (27 英寸)
電源: 12V 5A (DC 5.5/2.5mm 接口)

顯示器功率: 約 21W ~ 50W

關于屏幕面板, 推薦在屏庫網站上找, 比如:
https://www.panelook.cn/MV270QUM-N60_BOE_27.0_LCM_overview_cn_52883.html

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(圖片來源: panelook.cn 截圖)

關于驅動板的挑選, 需要有 4 個 DP 或 HDMI 輸入接口 (3 個或更少肯定不行). 另外下單購買前, 一定要明確去問賣家, 這個驅動板是否支持 4 畫面分屏 ! 不要你覺得驅動板可能支持, 那樣容易翻車.

還要把面板的具體型號告訴驅動板的賣家, 這樣賣家可以對驅動板進行相應調整, 拿回來接上就能用.

2 收貨測試

收到貨后, 在組裝起來之前, 先測試一下東西是不是好的, 能否正常工作.

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驅動板 (主控板) 以及按鍵板 (5 個按鍵, 以及電源指示燈), 屏幕背光供電線 (細), 面板信號線 (粗) (eDP).

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驅動板正面. 可以看到, 驅動板的結構還是比較簡單的: 左側是供電部分的電路, 左側下邊是 12V DC 供電輸入插座, 左側上邊是背光供電輸出 (左) 插座, 按鍵板插座. 中間是主控芯片 (在黑色散熱鰭片下面), 下邊是 4 個信號輸入接口, 上邊是連接面板的 eDP 信號輸出接口.

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驅動板背面.

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驅動板接口, 從左至右依次是: 12V 電源輸入插座 (DC 5.5/2.5mm), HDMI 信號輸入插座 (x3), DP 信號輸入插座 (x1), 3.5mm 音頻插座.

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液晶面板 (以及顯示器塑料外殼) 的包裝箱. 包裝是很好的, 有多層減震包裝材料, 并且快遞發了順豐, 能夠很大程度上避免運輸過程中的破損. 因為面板和外殼是在同一家店購買的, 收到貨時面板已經安裝在了外殼上.

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顯示器外殼的兩半.

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這個是外殼后蓋 (內部). 中間是安裝顯示器支架的位置, 中間下邊有很多塑料柱 (螺絲孔) 的位置是安裝驅動板的. 右側下邊是按鍵板 (5 個按鍵, 以及電源指示燈).

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這個是液晶面板 (后面), 已經安裝到了前外殼上. 上邊中間 (偏右) 是面板的 eDP 信號線接口, 右側是背光供電線的接口.

好了, 驅動板和面板都有了, 下面接上線測試一下 !

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如圖, 驅動板和面板之間需要連接 2 根線: eDP 信號線 (上邊), 背光供電線 (下邊).

同時驅動板要接入輸入信號 (此處為 HDMI), 12V DC 電源 (右邊).

(啊, 然后這里翻車了, 屏幕點不亮 (捂臉) 所以這里沒有對應的照片. 正常情況下, 應該是先測試好, 再開始組裝的. )

3 組裝并測試

簡單的擰上幾顆螺絲, 扣上卡扣, 顯示器就安裝好了. 組裝過程還是挺容易的, 具體可以問配件賣家要安裝教程.

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這是組裝好的顯示器接口部分.

哎, 百密一疏, 萬萬沒想到, 之前的電源是壞的 ! 所以導致了翻車, 屏幕點不亮. 后來更換了新的 12V 5A 電源之后, 屏幕就順利點亮啦 ~

3.1 全屏 4K 測試

接上 PC 主機, 首先作為一個普通的 4K 顯示器進行測試.

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主機成功識別顯示器, 并能設置 3840x2160 分辨率和 60Hz 刷新率.

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嗯, 用這臺顯示器, 來寫關于這臺顯示器的文章.

功耗測試.

測試方法: 功率插座, 對輸入顯示器的總電源功率進行測量.

待機功率 (顯示器不顯示畫面, 休眠模式): 1.6W
滿載功率 (4K 60Hz, 亮度 100): 49.5W
輕載功率 1 (4K 60Hz, 亮度 50): 37.2W
輕載功率 2 (4K 60Hz, 亮度 0): 20.6W

我們發現, 亮度和顯示器的耗電有很大關系, 調低亮度可以省電 !

3.2 分屏 1080p x4 測試

接下來, 就是激動人心的 4 分屏測試啦 ~

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同時顯示 4 路 1080p 60Hz (1920x1080) 畫面.

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這是對應的顯示器菜單設置.

3.3 DDC/CI 功能測試

詳見文章: 《顯示器的隱藏功能: 顯示數據通道命令接口 (DDC/CI)》

ddcutil detect

> ddcutil detect
Display 1I2C bus:  /dev/i2c-0DRM connector:           card1-HDMI-A-1EDID synopsis:Mfg id:               IPS - IPS, Inc.   {Intellectual Property Solutions, Inc.}Model:                T270LGProduct code:         9984  (0x2700)Serial number:        Binary serial number: 1 (0x00000001)Manufacture year:     2021,  Week: 20VCP version:         2.1

ddcutil capabilities

> ddcutil capabilities
Model: Not specified
MCCS version: 2.1
VCP Features:Feature: 02 (New control value)Feature: 04 (Restore factory defaults)Feature: 05 (Restore factory brightness/contrast defaults)Feature: 08 (Restore color defaults)Feature: 10 (Brightness)Feature: 12 (Contrast)Feature: 14 (Select color preset)Values:05: 6500 K08: 9300 K0b: User 10c: User 2Feature: 16 (Video gain: Red)Feature: 18 (Video gain: Green)Feature: 1A (Video gain: Blue)Feature: 52 (Active control)Feature: 60 (Input Source)Values:11: HDMI-112: HDMI-20f: DisplayPort-1Feature: AA (Screen Orientation)Values:01: 0 degrees02: 90 degreesFeature: AC (Horizontal frequency)Feature: AE (Vertical frequency)Feature: B2 (Flat panel sub-pixel layout)Feature: B6 (Display technology type)Feature: C6 (Application enable key)Feature: C8 (Display controller type)Feature: C9 (Display firmware level)Feature: D6 (Power mode)Values:01: DPM: On,  DPMS: Off04: DPM: Off, DPMS: Off05: Write only value to turn off displayFeature: DC (Display Mode)Values:00: Standard/Default mode02: Mixed03: Movie05: GamesFeature: DF (VCP Version)Feature: FD (Manufacturer specific feature)

ddcutil vcpinfo all

> ddcutil vcpinfo all
VCP code 01: DegaussCauses a CRT to perform a degauss cycleMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Write Only, Non-Continuous (write-only)
VCP code 02: New control valueIndicates that a display user control (other than power) has been used to change and save (or autosave) a new value.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Write, Non-Continuous (complex)
VCP code 03: Soft controlsAllows display controls to be used as soft keysMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Write, Non-Continuous (simple)
VCP code 04: Restore factory defaultsRestore all factory presets including brightness/contrast, geometry, color, and TV defaults.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: COLORAttributes: Write Only, Non-Continuous (write-only)
VCP code 05: Restore factory brightness/contrast defaultsRestore factory defaults for brightness and contrastMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: COLORAttributes: Write Only, Non-Continuous (write-only)
VCP code 06: Restore factory geometry defaultsRestore factory defaults for geometry adjustmentsMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Write Only, Non-Continuous (write-only)
VCP code 08: Restore color defaultsRestore factory defaults for color settings.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: COLORAttributes: Write Only, Non-Continuous (write-only)
VCP code 0A: Restore factory TV defaultsRestore factory defaults for TV functions.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: TVAttributes: Write Only, Non-Continuous (write-only)
VCP code 0B: Color temperature incrementColor temperature increment used by feature 0Ch Color Temperature RequestMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: COLORAttributes: Read Only, Non-Continuous (complex)
VCP code 0C: Color temperature requestSpecifies a color temperature (degrees Kelvin)MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: COLORAttributes: Read Write, Continuous (complex)
VCP code 0E: ClockIncrease/decrease the sampling clock frequency.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Write, Continuous (normal)
VCP code 10: BrightnessIncrease/decrease the brightness of the image.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: PROFILE, COLORAttributes: Read Write, Continuous (normal)
VCP code 11: Flesh tone enhancementSelect contrast enhancement algorithm respecting flesh tone regionMCCS versions: 2.1, 3.0, 2.2ddcutil feature subsets: COLORAttributes: Read Write, Non-Continuous (complex)
VCP code 12: ContrastIncrease/decrease the contrast of the image.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: PROFILE, COLORAttributes: Read Write, Continuous (normal)
VCP code 13: Backlight controlIncrease/decrease the specified backlight control valueMCCS versions: 2.1, 3.0ddcutil feature subsets: PROFILE, COLORAttributes (v2.1): Read Write, Continuous (complex)Attributes (v3.0): Read Write, Continuous (complex)Attributes (v2.2): Deprecated, 
VCP code 14: Select color presetSelect a specified color temperatureMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: PROFILE, COLORAttributes (v2.0): Read Write, Non-Continuous (simple)Attributes (v2.1): Read Write, Non-Continuous (simple)Attributes (v3.0): Read Write, Non-Continuous (complex)Attributes (v2.2): Read Write, Non-Continuous (complex)
VCP code 16: Video gain: RedIncrease/decrease the luminesence of red pixelsMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: PROFILE, COLORAttributes: Read Write, Continuous (normal)
VCP code 17: User color vision compensationIncrease/decrease the degree of compensationMCCS versions: 2.1, 3.0, 2.2ddcutil feature subsets: COLORAttributes: Read Write, Continuous (normal)
VCP code 18: Video gain: GreenIncrease/decrease the luminesence of green pixelsMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: PROFILE, COLORAttributes: Read Write, Continuous (normal)
VCP code 1A: Video gain: BlueIncrease/decrease the luminesence of blue pixelsMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: PROFILE, COLORAttributes: Read Write, Continuous (normal)
VCP code 1C: FocusIncrease/decrease the focus of the imageMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Write, Continuous (normal)
VCP code 1E: Auto setupPerform autosetup function (H/V position, clock, clock phase, A/D converter, etc.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Write, Non-Continuous (simple)
VCP code 1F: Auto color setupPerform color autosetup function (R/G/B gain and offset, A/D setup, etc. MCCS versions: 2.1, 3.0, 2.2ddcutil feature subsets: COLORAttributes: Read Write, Non-Continuous (simple)
VCP code 20: Horizontal Position (Phase)Increasing (decreasing) this value moves the image toward the right (left) of the display.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 22: Horizontal SizeIncrease/decrease the width of the image.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 24: Horizontal PincushionIncreasing (decreasing) this value causes the right and left sides of the image to become more (less) convex.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 26: Horizontal Pincushion BalanceIncreasing (decreasing) this value moves the center section of the image toward the right (left) side of the display.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 28: Horizontal Convergence R/BIncreasing (decreasing) this value shifts the red pixels to the right (left) and the blue pixels left (right) across the image with respect to the green pixels.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 29: Horizontal Convergence M/GIncreasing (decreasing) this value shifts the magenta pixels to the right (left) and the green pixels left (right) across the image with respect to the magenta (sic) pixels.MCCS versions: 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 2A: Horizontal LinearityIncrease/decrease the density of pixels in the image center.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 2C: Horizontal Linearity BalanceIncreasing (decreasing) this value shifts the density of pixels from the left (right) side to the right (left) side of the image.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 2E: Gray scale expansionGray Scale ExpansionMCCS versions: 2.1, 3.0, 2.2ddcutil feature subsets: COLORAttributes: Read Write, Non-Continuous (complex)
VCP code 30: Vertical Position (Phase)Increasing (decreasing) this value moves the image toward the top (bottom) edge of the display.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 32: Vertical SizeIncrease/decreasing the height of the image.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 34: Vertical PincushionIncreasing (decreasing) this value will cause the top and bottom edges of the image to become more (less) convex.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 36: Vertical Pincushion BalanceIncreasing (decreasing) this value will move the center section of the image toward the top (bottom) edge of the display.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 38: Vertical Convergence R/BIncreasing (decreasing) this value shifts the red pixels up (down) across the image and the blue pixels down (up) across the image with respect to the green pixels.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 39: Vertical Convergence M/GIncreasing (decreasing) this value shifts the magenta pixels up (down) across the image and the green pixels down (up) across the image with respect to the magenta (sic) pixels.MCCS versions: 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 3A: Vertical LinearityIncrease/decease the density of scan lines in the image center.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 3C: Vertical Linearity BalanceIncrease/decrease the density of scan lines in the image center.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 3E: Clock phaseIncrease/decrease the sampling clock phase shiftMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Write, Continuous (normal)
VCP code 40: Horizontal ParallelogramIncreasing (decreasing) this value shifts the top section of the image to the right (left) with respect to the bottom section of the image.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 41: Vertical ParallelogramIncreasing (decreasing) this value shifts the top section of the image to the right (left) with respect to the bottom section of the image. (sic)MCCS versions: 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 42: Horizontal KeystoneIncreasing (decreasing) this value will increase (decrease) the ratio between the horizontal size at the top of the image and the horizontal size at the bottom of the image.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 43: Vertical KeystoneIncreasing (decreasing) this value will increase (decrease) the ratio between the vertical size at the left of the image and the vertical size at the right of the image.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 44: RotationIncreasing (decreasing) this value rotates the image (counter) clockwise around the center point of the screen.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 46: Top Corner FlareIncrease/decrease the distance between the left and right sides at the top of the image.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 48: Top Corner HookIncreasing (decreasing) this value moves the top of the image to the right (left).MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 4A: Bottom Corner FlareIncrease/decrease the distance between the left and right sides at the bottom of the image.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 4C: Bottom Corner HookIncreasing (decreasing) this value moves the bottom end of the image to the right (left).MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 52: Active controlRead id of one feature that has changed, 0x00 indicates no moreMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Only, Non-Continuous (complex)
VCP code 54: Performance PreservationControls features aimed at preserving display performanceMCCS versions: 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Write, Non-Continuous (complex)
VCP code 56: Horizontal MoireIncrease/decrease horizontal moire cancellation.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Write, Continuous (normal)
VCP code 58: Vertical MoireIncrease/decrease vertical moire cancellation.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Write, Continuous (normal)
VCP code 59: 6 axis saturation: RedIncrease/decrease red saturationMCCS versions: 2.1, 3.0, 2.2ddcutil feature subsets: COLORAttributes: Read Write, Continuous (normal)
VCP code 5A: 6 axis saturation: YellowIncrease/decrease yellow saturationMCCS versions: 2.1, 3.0, 2.2ddcutil feature subsets: COLORAttributes: Read Write, Continuous (normal)
VCP code 5B: 6 axis saturation: GreenIncrease/decrease green saturationMCCS versions: 2.1, 3.0, 2.2ddcutil feature subsets: COLORAttributes: Read Write, Continuous (normal)
VCP code 5C: 6 axis saturation: CyanIncrease/decrease cyan saturationMCCS versions: 2.1, 3.0, 2.2ddcutil feature subsets: COLORAttributes: Read Write, Continuous (normal)
VCP code 5D: 6 axis saturation: BlueIncrease/decrease blue saturationMCCS versions: 2.1, 3.0, 2.2ddcutil feature subsets: COLORAttributes: Read Write, Continuous (normal)
VCP code 5E: 6 axis saturation: MagentaIncrease/decrease magenta saturationMCCS versions: 2.1, 3.0, 2.2ddcutil feature subsets: COLORAttributes: Read Write, Continuous (normal)
VCP code 60: Input SourceSelects active video sourceMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes (v2.0): Read Write, Non-Continuous (simple)Attributes (v2.1): Read Write, Non-Continuous (simple)Attributes (v3.0): Read Write, Table (normal)Attributes (v2.2): Read Write, Non-Continuous (simple)
VCP code 62: Audio speaker volumeAdjusts speaker volumeMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: AUDIOAttributes (v2.0): Read Write, Continuous (normal)Attributes (v2.1): Read Write, Continuous (normal)Attributes (v3.0): Read Write, Non-Continuous with continuous subrangeAttributes (v2.2): Read Write, Non-Continuous with continuous subrange
VCP code 63: Speaker SelectSelects a group of speakersMCCS versions: 2.1, 3.0, 2.2ddcutil feature subsets: AUDIOAttributes: Read Write, Non-Continuous (simple)
VCP code 64: Audio: Microphone VolumeIncrease/decrease microphone gainMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: AUDIOAttributes: Read Write, Continuous (normal)
VCP code 66: Ambient light sensorEnable/Disable ambient light sensorMCCS versions: 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Write, Non-Continuous (simple)
VCP code 6B: Backlight Level: WhiteIncrease/decrease the white backlight levelMCCS versions: 2.2ddcutil feature subsets: PROFILE, COLORAttributes: Read Write, Continuous (normal)
VCP code 6C: Video black level: RedIncrease/decrease the black level of red pixelsMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: PROFILE, COLORAttributes: Read Write, Continuous (normal)
VCP code 6D: Backlight Level: RedIncrease/decrease the red backlight levelMCCS versions: 2.2ddcutil feature subsets: PROFILE, COLORAttributes: Read Write, Continuous (normal)
VCP code 6E: Video black level: GreenIncrease/decrease the black level of green pixelsMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: PROFILE, COLORAttributes: Read Write, Continuous (normal)
VCP code 6F: Backlight Level: GreenIncrease/decrease the green backlight levelMCCS versions: 2.2ddcutil feature subsets: PROFILE, COLORAttributes: Read Write, Continuous (normal)
VCP code 70: Video black level: BlueIncrease/decrease the black level of blue pixelsMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: PROFILE, COLORAttributes: Read Write, Continuous (normal)
VCP code 71: Backlight Level: BlueIncrease/decrease the blue backlight levelMCCS versions: 2.2ddcutil feature subsets: PROFILE, COLORAttributes: Read Write, Continuous (normal)
VCP code 72: GammaSelect relative or absolute gammaMCCS versions: 2.1, 3.0, 2.2ddcutil feature subsets: COLORAttributes: Read Write, Non-Continuous (complex)
VCP code 73: LUT SizeProvides the size (number of entries and number of bits/entry) for the Red, Green, and Blue LUT in the display.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: LUTAttributes: Read Only, Table (normal)
VCP code 74: Single point LUT operationWrites a single point within the display's LUT, reads a single point from the LUTMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: LUTAttributes: Read Write, Table (normal)
VCP code 75: Block LUT operationLoad (read) multiple values into (from) the display's LUTMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: LUTAttributes: Read Write, Table (normal)
VCP code 76: Remote Procedure CallInitiates a routine resident in the displayMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: LUTAttributes: Write Only, Table (write-only)
VCP code 78: Display Identification OperationCauses a selected 128 byte block of Display Identification Data (EDID or Display ID) to be readMCCS versions: 2.1, 3.0, 2.2ddcutil feature subsets: Attributes (v2.1): Read Only, Table (normal)Attributes (v3.0): Read Only, Table (normal)Attributes (v2.2): Read Only, Table (normal)
VCP code 7A: Adjust Focal PlaneIncrease/decrease the distance to the focal plane of the imageMCCS versions: 2.0, 2.1ddcutil feature subsets: Attributes (v2.0): Read Write, Continuous (normal)Attributes (v2.1): Read Write, Continuous (normal)Attributes (v3.0): Deprecated, Attributes (v2.2): Deprecated, 
VCP code 7C: Adjust ZoomIncrease/decrease the distance to the zoom function of the projection lens (optics)MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Write, Continuous (normal)
VCP code 7E: TrapezoidIncrease/decrease the trapezoid distortion in the imageMCCS versions: 2.0, 2.1ddcutil feature subsets: CRTAttributes (v2.0): Read Write, Continuous (normal)Attributes (v2.1): Read Write, Continuous (normal)Attributes (v3.0): Deprecated, Attributes (v2.2): Deprecated, 
VCP code 80: KeystoneIncrease/decrease the keystone distortion in the image.MCCS versions: 2.0ddcutil feature subsets: CRTAttributes (v2.0): Read Write, Continuous (normal)Attributes (v2.1): Deprecated, Attributes (v3.0): Deprecated, Attributes (v2.2): Deprecated, 
VCP code 82: Horizontal Mirror (Flip)Flip picture horizontallyMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes (v2.0): Write Only, Non-Continuous (write-only)Attributes (v2.1): Read Write, Non-Continuous (simple)Attributes (v3.0): Read Write, Non-Continuous (simple)Attributes (v2.2): Read Write, Non-Continuous (simple)
VCP code 84: Vertical Mirror (Flip)Flip picture verticallyMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes (v2.0): Write Only, Non-Continuous (write-only)Attributes (v2.1): Read Write, Non-Continuous (simple)Attributes (v3.0): Read Write, Non-Continuous (simple)Attributes (v2.2): Read Write, Non-Continuous (simple)
VCP code 86: Display ScalingControl the scaling (input vs output) of the displayMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Write, Non-Continuous (simple)
VCP code 87: SharpnessSelects one of a range of algorithms. Increasing (decreasing) the value must increase (decrease) the edge sharpness of image features.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes (v2.0): Read Write, Non-Continuous (simple)Attributes (v2.1): Read Write, Continuous (normal)Attributes (v3.0): Read Write, Continuous (normal)Attributes (v2.2): Read Write, Continuous (normal)
VCP code 88: Velocity Scan ModulationIncrease (decrease) the velocity modulation of the horizontal scan as a function of the change in luminescence levelMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Continuous (normal)
VCP code 8A: Color SaturationIncrease/decrease the amplitude of the color difference components of the video signalMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: COLOR, TVAttributes: Read Write, Continuous (normal)
VCP code 8B: TV Channel Up/DownIncrement (1) or decrement (2) television channelMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: TVAttributes: Write Only, Non-Continuous (write-only)
VCP code 8C: TV SharpnessIncrease/decrease the amplitude of the high frequency components  of the video signalMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: TVAttributes: Read Write, Continuous (normal)
VCP code 8D: Audio mute/Screen blankMute/unmute audio, and (v2.2) screen blankMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: TV, AUDIOAttributes (v2.0): Read Write, Non-Continuous (simple)Attributes (v2.1): Read Write, Non-Continuous (simple)Attributes (v3.0): Read Write, Non-Continuous (simple)Attributes (v2.2): Read Write, Non-Continuous (complex)
VCP code 8E: TV ContrastIncrease/decrease the ratio between blacks and whites in the imageMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: TVAttributes: Read Write, Continuous (normal)
VCP code 8F: Audio TrebleEmphasize/de-emphasize high frequency audioMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: AUDIOAttributes (v2.0): Read Write, Continuous (normal)Attributes (v2.1): Read Write, Continuous (normal)Attributes (v3.0): Read Write, Non-Continuous with continuous subrangeAttributes (v2.2): Read Write, Non-Continuous with continuous subrange
VCP code 90: HueIncrease/decrease the wavelength of the color component of the video signal. AKA tint.  Applies to currently active interfaceMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: COLOR, TVAttributes: Read Write, Continuous (normal)
VCP code 91: Audio BassEmphasize/de-emphasize low frequency audioMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: AUDIOAttributes (v2.0): Read Write, Continuous (normal)Attributes (v2.1): Read Write, Continuous (normal)Attributes (v3.0): Read Write, Non-Continuous with continuous subrangeAttributes (v2.2): Read Write, Non-Continuous with continuous subrange
VCP code 92: TV Black level/LuminesenceIncrease/decrease the black level of the videoMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: TVAttributes: Read Write, Continuous (normal)
VCP code 93: Audio Balance L/RControls left/right audio balanceMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: AUDIOAttributes (v2.0): Read Write, Continuous (normal)Attributes (v2.1): Read Write, Continuous (normal)Attributes (v3.0): Read Write, Non-Continuous with continuous subrangeAttributes (v2.2): Read Write, Non-Continuous with continuous subrange
VCP code 94: Audio Processor ModeSelect audio modeMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: TV, AUDIOAttributes: Read Write, Non-Continuous (simple)
VCP code 95: Window Position(TL_X)Top left X pixel of an area of the imageMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: WINDOWAttributes: Read Write, Continuous (normal)
VCP code 96: Window Position(TL_Y)Top left Y pixel of an area of the imageMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: WINDOWAttributes: Read Write, Continuous (normal)
VCP code 97: Window Position(BR_X)Bottom right X pixel of an area of the imageMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: WINDOWAttributes: Read Write, Continuous (normal)
VCP code 98: Window Position(BR_Y)Bottom right Y pixel of an area of the imageMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: WINDOWAttributes: Read Write, Continuous (normal)
VCP code 99: Window control on/offEnables the brightness and color within a window to be different from the desktop.MCCS versions: 2.0, 2.1ddcutil feature subsets: WINDOWAttributes (v2.0): Read Write, Non-Continuous (simple)Attributes (v2.1): Read Write, Non-Continuous (simple)Attributes (v3.0): Deprecated, Attributes (v2.2): Deprecated, 
VCP code 9A: Window backgroundChanges the contrast ratio between the area of the window and the rest of the desktopMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: WINDOWAttributes: Read Write, Continuous (normal)
VCP code 9B: 6 axis hue control: RedDecrease shifts toward magenta, increase shifts toward yellowMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: PROFILE, COLORAttributes: Read Write, Continuous (normal)
VCP code 9C: 6 axis hue control: YellowDecrease shifts toward green, increase shifts toward redMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: PROFILE, COLORAttributes: Read Write, Continuous (normal)
VCP code 9D: 6 axis hue control: GreenDecrease shifts toward yellow, increase shifts toward cyanMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: PROFILE, COLORAttributes: Read Write, Continuous (normal)
VCP code 9E: 6 axis hue control: CyanDecrease shifts toward green, increase shifts toward blueMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: PROFILE, COLORAttributes: Read Write, Continuous (normal)
VCP code 9F: 6 axis hue control: BlueDecrease shifts toward cyan, increase shifts toward magentaMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: PROFILE, COLORAttributes: Read Write, Continuous (normal)
VCP code A0: 6 axis hue control: MagentaDecrease shifts toward blue, 127 no effect, increase shifts toward redMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: PROFILE, COLORAttributes: Read Write, Continuous (normal)
VCP code A2: Auto setup on/offTurn on/off an auto setup functionMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Write Only, Non-Continuous (write-only)
VCP code A4: Window mask controlTurn selected window operation on/off, window maskMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: WINDOWAttributes (v2.0): Read Write, Non-Continuous (complex)Attributes (v2.1): Read Write, Non-Continuous (complex)Attributes (v3.0): Read Write, Table (normal)Attributes (v2.2): Read Write, Table (normal)
VCP code A5: Change the selected windowChange selected window (as defined by 95h..98h)MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: WINDOWAttributes: Read Write, Non-Continuous (simple)
VCP code AA: Screen OrientationIndicates screen orientationMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Only, Non-Continuous (simple)
VCP code AC: Horizontal frequencyHorizontal sync signal frequency as determined by the displayMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Only, Continuous (complex)
VCP code AE: Vertical frequencyVertical sync signal frequency as determined by the display, in .01 hzMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Only, Continuous (complex)
VCP code B0: SettingsStore/restore the user saved values for the current mode.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Write Only, Non-Continuous (write-only)
VCP code B2: Flat panel sub-pixel layoutLCD sub-pixel structureMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Only, Non-Continuous (simple)
VCP code B4: Source Timing ModeIndicates timing mode being sent by hostMCCS versions: 2.1, 3.0, 2.2ddcutil feature subsets: Attributes (v2.1): Read Write, Non-Continuous (complex)Attributes (v3.0): Read Write, Table (normal)Attributes (v2.2): Read Write, Table (normal)
VCP code B6: Display technology typeIndicates the base technology typeMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Only, Non-Continuous (simple)
VCP code B7: Monitor statusVideo mode and status of a DPVL capable monitorMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: DPVLAttributes: Read Only, Non-Continuous (complex)
VCP code B8: Packet countCounter for DPVL packets receivedMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: DPVLAttributes: Read Write, Continuous (complex)
VCP code B9: Monitor X originX origin of the monitor in the vertical screenMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: DPVLAttributes: Read Write, Continuous (complex)
VCP code BA: Monitor Y originY origin of the monitor in the vertical screenMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: DPVLAttributes: Read Write, Continuous (complex)
VCP code BB: Header error countError counter for the DPVL headerMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: DPVLAttributes: Read Write, Continuous (complex)
VCP code BC: Body CRC error countCRC error counter for the DPVL bodyMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: DPVLAttributes: Read Write, Continuous (complex)
VCP code BD: Client IDAssigned identification number for the monitorMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: DPVLAttributes: Read Write, Continuous (complex)
VCP code BE: Link controlIndicates status of the DVI linkMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: DPVLAttributes: Read Write, Non-Continuous (complex)
VCP code C0: Display usage timeActive power on time in hoursMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Only, Continuous (complex)
VCP code C2: Display descriptor lengthLength in bytes of non-volatile storage in the display available for writing a display descriptor, max 256MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Only, Continuous (normal)
VCP code C3: Transmit display descriptorReads (writes) a display descriptor from (to) non-volatile storage in the display.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Write, Table (normal)
VCP code C4: Enable display of 'display descriptor'If enabled, the display descriptor shall be displayed when no video is being received.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Write, Non-Continuous (complex)
VCP code C6: Application enable keyA 2 byte value used to allow an application to only operate with known products.MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Only, Non-Continuous (complex)
VCP code C8: Display controller typeMfg id of controller and 2 byte manufacturer-specific controller typeMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Only, Non-Continuous (complex)
VCP code C9: Display firmware level2 byte firmware levelMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Only, Non-Continuous (complex)
VCP code CA: OSD/Button ControlSets and indicates the current operational state of OSD (and buttons in v2.2)MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes (v2.0): Read Write, Non-Continuous (simple)Attributes (v2.1): Read Write, Non-Continuous (simple)Attributes (v3.0): Read Write, Non-Continuous (simple)Attributes (v2.2): Read Write, Non-Continuous (complex)
VCP code CC: OSD LanguageOn Screen Display languageMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Write, Non-Continuous (simple)
VCP code CD: Status IndicatorsControl up to 16 LED (or similar) indicators to indicate system statusMCCS versions: 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Write, Non-Continuous (complex)
VCP code CE: Auxiliary display sizeRows and characters/row of auxiliary displayMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Only, Non-Continuous (complex)
VCP code CF: Auxiliary display dataSets contents of auxiliary display deviceMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Write Only, Table (write-only)
VCP code D0: Output selectSelects the active outputMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes (v2.0): Read Write, Non-Continuous (simple)Attributes (v2.1): Read Write, Non-Continuous (simple)Attributes (v3.0): Read Write, Table (normal)Attributes (v2.2): Read Write, Non-Continuous (simple)
VCP code D2: Asset TagRead an Asset Tag to/from the displayMCCS versions: 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Write, Table (normal)
VCP code D4: Stereo video modeStereo video modeMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Write, Non-Continuous (complex)
VCP code D6: Power modeDPM and DPMS statusMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Write, Non-Continuous (simple)
VCP code D7: Auxiliary power outputControls an auxiliary power output from a display to a host deviceMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Write, Non-Continuous (simple)
VCP code DA: Scan modeControls scan characteristics (aka format)MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: CRTAttributes: Read Write, Non-Continuous (simple)
VCP code DB: Image ModeControls aspects of the displayed image (TV applications)MCCS versions: 2.1, 3.0, 2.2ddcutil feature subsets: TVAttributes: Read Write, Non-Continuous (simple)
VCP code DC: Display ModeType of application used on displayMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: COLORAttributes: Read Write, Non-Continuous (simple)
VCP code DE: Scratch PadOperation mode (2.0) or scratch pad (3.0/2.2)MCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes (v2.0): Write Only, Non-Continuous (write-only)Attributes (v2.1): Read Write, Non-Continuous (complex)Attributes (v3.0): Read Write, Non-Continuous (complex)Attributes (v2.2): Read Write, Non-Continuous (complex)
VCP code DF: VCP VersionMCCS versionMCCS versions: 2.0, 2.1, 3.0, 2.2ddcutil feature subsets: Attributes: Read Only, Non-Continuous (complex)

ddcutil getvcp scan

> ddcutil getvcp scan
VCP code 0x02 (New control value             ): No new control values (0x01)
VCP code 0x0b (Color temperature increment   ): Invalid value: 0
VCP code 0x0c (Color temperature request     ): 3000 + 1 * (feature 0B color temp increment) degree(s) Kelvin
VCP code 0x0e (Clock                         ): current value =    50, max value =   100
VCP code 0x10 (Brightness                    ): current value =    37, max value =   100
VCP code 0x12 (Contrast                      ): current value =    50, max value =   100
VCP code 0x14 (Select color preset           ): 6500 K (sl=0x05)
VCP code 0x16 (Video gain: Red               ): current value =    49, max value =   100
VCP code 0x18 (Video gain: Green             ): current value =    50, max value =   100
VCP code 0x1a (Video gain: Blue              ): current value =    49, max value =   100
VCP code 0x1e (Auto setup                    ): Auto setup not active (sl=0x00)
VCP code 0x20 (Horizontal Position           ): current value =     0, max value =   100
VCP code 0x30 (Vertical Position             ): current value =     0, max value =   100
VCP code 0x3e (Clock phase                   ): current value =    50, max value =   100
VCP code 0x52 (Active control                ): Value: 0x00
VCP code 0x60 (Input Source                  ): HDMI-1 (sl=0x11)
VCP code 0x68 (Unknown feature               ): mh=0x00, ml=0x05, sh=0x00, sl=0x01
VCP code 0x6c (Video black level: Red        ): current value =    50, max value =   255
VCP code 0x6e (Video black level: Green      ): current value =    50, max value =   255
VCP code 0x70 (Video black level: Blue       ): current value =    50, max value =   255
VCP code 0xa8 (Unknown feature               ): mh=0x00, ml=0x03, sh=0x00, sl=0x00
VCP code 0xaa (Screen Orientation            ): 0 degrees (sl=0x01)
VCP code 0xac (Horizontal frequency          ): 3728 hz
VCP code 0xae (Vertical frequency            ): 59.91 hz
VCP code 0xb2 (Flat panel sub-pixel layout   ): Red/Green/Blue vertical stripe (sl=0x01)
VCP code 0xb4 (Source Timing Mode            ): mh=0x00, ml=0x02, sh=0x00, sl=0x01
VCP code 0xb6 (Display technology type       ): LCD (active matrix) (sl=0x03)
VCP code 0xc0 (Display usage time            ): Usage time (hours) = 0 (0x000000) mh=0xff, ml=0xff, sh=0x00, sl=0x00
VCP code 0xc6 (Application enable key        ): 0x45cc
VCP code 0xc8 (Display controller type       ): Mfg: Mstar (sl=0x05), controller number: mh=0x00, ml=0x00, sh=0x56
VCP code 0xc9 (Display firmware level        ): 0.0
VCP code 0xca (OSD                           ): OSD Enabled (sl=0x02)
VCP code 0xd6 (Power mode                    ): DPM: On,  DPMS: Off (sl=0x01)
VCP code 0xdc (Display Mode                  ): Standard/Default mode (sl=0x00)
VCP code 0xdf (VCP Version                   ): 2.1
VCP code 0xe3 (Manufacturer Specific         ): mh=0x00, ml=0x01, sh=0x00, sl=0x00
VCP code 0xed (Manufacturer Specific         ): mh=0x00, ml=0x01, sh=0x00, sl=0x01
VCP code 0xfa (Manufacturer Specific         ): mh=0xff, ml=0xff, sh=0x00, sl=0x00
VCP code 0xfd (Manufacturer Specific         ): mh=0xff, ml=0xff, sh=0x00, sl=0x63
VCP code 0xff (Manufacturer Specific         ): mh=0xff, ml=0xff, sh=0x00, sl=0x00

可以看到, 作為一款廉價的小廠顯示器驅動板, 支持的 DDC/CI 功能是比較少的. 但是亮度控制功能是正常的, 能夠正確設置 0 和 100 亮度.