Ubuntu 20.04 查看显示器信息

• 安装 ddcutil

apt install ddcutil

• 输入命令

ddcutil detect --verbose

输出类似如下：

Output level:               Verbose
Reporting DDC data errors:  false
Trace groups active:        none
Traced functions:           none
Traced files:               none
Force I2C slave address:    false
User defined features:      disabled

Invalid display
   I2C bus:             /dev/i2c-7
      I2C address 0x50 (EDID) present: true 
      Is eDP device:                   true 
      /sys/bus/i2c/devices/i2c-7/name: DPDDC-A
   EDID synopsis:
      Mfg id:           BOE
      Model:            
      Serial number:    
      Manufacture year: 2016
      EDID version:     1.4
      Product code:     1795
      Extra descriptor: NV156FHM-N43
      Video input definition: 0x95 - Digital Input (DisplayPort)
      Supported features:
         Digital display type: RGB 4:4:4
         Standard sRGB color space: False
      White x,y:        0.312, 0.328
      Red   x,y:        0.652, 0.340
      Green x,y:        0.316, 0.629
      Blue  x,y:        0.152, 0.063
      Extension blocks: 0
   EDID source: 
   EDID hex dump:
              +0          +4          +8          +c            0   4   8   c   
      +0000   00 ff ff ff ff ff ff 00 09 e5 03 07 00 00 00 00   ................
      +0010   01 1a 01 04 95 22 13 78 02 00 10 a7 57 51 a1 27   .....".x....WQ.'
      +0020   10 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01   .PT.............
      +0030   01 01 01 01 01 01 96 37 80 a0 70 38 3c 40 30 20   .......7..p8<@0 
      +0040   36 00 58 c2 10 00 00 1a 00 00 00 00 00 00 00 00   6.X.............
      +0050   00 00 00 00 00 00 00 00 00 00 00 00 00 fe 00 42   ...............B
      +0060   4f 45 20 43 51 0a 20 20 20 20 20 20 00 00 00 fe   OE CQ.      ....
      +0070   00 4e 56 31 35 36 46 48 4d 2d 4e 34 33 0a 00 8d   .NV156FHM-N43...
   DDC communication failed
   This is an eDP laptop display. Laptop displays do not support DDC/CI.