![Ubuntu:修复“未知显示”的屏幕分辨率 xrandr:无法获取输出默认值的伽马大小](https://linux22.com/image/902174/Ubuntu%EF%BC%9A%E4%BF%AE%E5%A4%8D%E2%80%9C%E6%9C%AA%E7%9F%A5%E6%98%BE%E7%A4%BA%E2%80%9D%E7%9A%84%E5%B1%8F%E5%B9%95%E5%88%86%E8%BE%A8%E7%8E%87%20xrandr%EF%BC%9A%E6%97%A0%E6%B3%95%E8%8E%B7%E5%8F%96%E8%BE%93%E5%87%BA%E9%BB%98%E8%AE%A4%E5%80%BC%E7%9A%84%E4%BC%BD%E9%A9%AC%E5%A4%A7%E5%B0%8F.png)
我的 Ubuntu 显示设置1024x768
为Unknown display
:
我的显示器可以1920x1080
。有人可以提供修复此问题的分步说明吗?根据其他问答,我尝试了以下方法:
aloha@aloha-MS-7A68:~$ xrandr
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1024 x 768, current 1024 x 768, maximum 1024 x 768
default connected primary 1024x768+0+0 0mm x 0mm
1024x768 76.00*
1280x1024 (0x2b1) 109.000MHz -HSync +VSync
h: width 1280 start 1368 end 1496 total 1712 skew 0 clock 63.67KHz
v: height 1024 start 1027 end 1034 total 1063 clock 59.89Hz
1920x1080 (0x2b2) 173.000MHz -HSync +VSync
h: width 1920 start 2048 end 2248 total 2576 skew 0 clock 67.16KHz
v: height 1080 start 1083 end 1088 total 1120 clock 59.96Hz
aloha@aloha-MS-7A68:~$ xrandr --output 0x2b1 --mode 1920x1080
xrandr: Failed to get size of gamma for output default
warning: output (null) not found; ignoring
这是我成功安装的驱动程序:
我也尝试过:
cvt 1920 1080
# 1920x1080 59.96 Hz (CVT 2.07M9) hsync: 67.16 kHz; pclk: 173.00 MHz
Modeline "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync
xrandr --newmode "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync
xrandr: Failed to get size of gamma for output default