xrandr --verbose命令输出内容贴一下

HD4000是12年的U了，可能是6.X的内核没驱动，建议试试20.9。

Screen 0: minimum 320 x 200, current 1024 x 768, maximum 16384 x 16384
VGA-1 connected primary 1024x768+0+0 (0x43) normal (normal left inverted right x axis y axis) 0mm x 0mm
Identifier: 0x41
Timestamp: 177874
Subpixel: unknown
Gamma: 1.0:1.0:1.0
Brightness: 1.0
Clones:
CRTC: 0
CRTCs: 0 1 2
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
link-status: Good
supported: Good, Bad
CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0
0 1
CONNECTOR_ID: 76
supported: 76
non-desktop: 0
range: (0, 1)
1024x768 (0x43) 65.000MHz -HSync -VSync *current
h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.36KHz
v: height 768 start 771 end 777 total 806 clock 60.00Hz
800x600 (0x44) 40.000MHz +HSync +VSync
h: width 800 start 840 end 968 total 1056 skew 0 clock 37.88KHz
v: height 600 start 601 end 605 total 628 clock 60.32Hz
800x600 (0x45) 36.000MHz +HSync +VSync
h: width 800 start 824 end 896 total 1024 skew 0 clock 35.16KHz
v: height 600 start 601 end 603 total 625 clock 56.25Hz
848x480 (0x46) 33.750MHz +HSync +VSync
h: width 848 start 864 end 976 total 1088 skew 0 clock 31.02KHz
v: height 480 start 486 end 494 total 517 clock 60.00Hz
640x480 (0x47) 25.175MHz -HSync -VSync
h: width 640 start 656 end 752 total 800 skew 0 clock 31.47KHz
v: height 480 start 490 end 492 total 525 clock 59.94Hz

加一个vga转hdmi转换器分辨率又正常了🤔显卡驱动又似乎没问题

研发看了日志，说是这个核显对vga接口的支持不好，需要手动加mode。执行下面几行命令试下：

sudo xrandr --newmode "nemode" 421.20 1920 2008 2052 2200 1080 1084 1089 1125 -hsync -vsync

sudo xrandr --addmode VGA-1 "nemode"
sudo xrandr --output VGA-1 --mode nemode

执行最一条命令时报错。虽然设置里多了1920x1080的选项，但选择后直接无信号了

研发说有个参数不对，执行这一条命令：sudo xrandr --newmode "nemode" 138.50 1920 1968 2000 2080 1080 1083 1088 1111 +hsync -vsync

X Error of failed request: BadName (named color or font does not exist)
Major opcode of failed request: 140 (RANDR)
Minor opcode of failed request: 16 (RRCreateMode)
Serial number of failed request: 26
Current serial number in output stream: 26

依旧