升级至 18.10 后未检测到 HDMI

Question

我将 Asus n76vj 从 18.04 升级到 18.10，HDMI 停止工作（它在 Windows 10 上运行）。

以下是有关我的系统的一些信息：

$ lspci | grep -iE "display|vga|hdmi"
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) 
01:00.0 VGA compatible controller: NVIDIA Corporation GF108M [GeForce GT 635M] (rev a1)

$ xrandr
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192
LVDS-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 382mm x 215mm
   1920x1080     60.01*+  60.01    59.97    59.96    59.93    40.01  
   1680x1050     59.95    59.88  
   1600x1024     60.17  
   1400x1050     59.98  
   1600x900      59.99    59.94    59.95    59.82  
   1280x1024     60.02  
   1440x900      59.89  
   1400x900      59.96    59.88  
   1280x960      60.00  
   1440x810      60.00    59.97  
   1368x768      59.88    59.85  
   1360x768      59.80    59.96  
   1280x800      59.99    59.97    59.81    59.91  
   1152x864      60.00  
   1280x720      60.00    59.99    59.86    59.74  
   1024x768      60.04    60.00  
   960x720       60.00  
   928x696       60.05  
   896x672       60.01  
   1024x576      59.95    59.96    59.90    59.82  
   960x600       59.93    60.00  
   960x540       59.96    59.99    59.63    59.82  
   800x600       60.00    60.32    56.25  
   840x525       60.01    59.88  
   864x486       59.92    59.57  
   800x512       60.17  
   700x525       59.98  
   800x450       59.95    59.82  
   640x512       60.02  
   720x450       59.89  
   700x450       59.96    59.88  
   640x480       60.00    59.94  
   720x405       59.51    58.99  
   684x384       59.88    59.85  
   680x384       59.80    59.96  
   640x400       59.88    59.98  
   576x432       60.06  
   640x360       59.86    59.83    59.84    59.32  
   512x384       60.00  
   512x288       60.00    59.92  
   480x270       59.63    59.82  
   400x300       60.32    56.34  
   432x243       59.92    59.57  
   320x240       60.05  
   360x202       59.51    59.13  
   320x180       59.84    59.32  
VGA-1 disconnected (normal left inverted right x axis y axis)

$ sudo lshw -C display
    *-display UNCLAIMED       
           description: VGA compatible controller
           product: GF108M [GeForce GT 635M]
           vendor: NVIDIA Corporation
           physical id: 0
           bus info: pci@0000:01:00.0
           version: a1
           width: 64 bits
           clock: 33MHz
           capabilities: pm msi pciexpress vga_controller cap_list
           configuration: latency=0
           resources: memory:f6000000-f6ffffff memory:e0000000-efffffff memory:f0000000-f1ffffff ioport:e000(size=128) memory:f7000000-f707ffff
      *-display
           description: VGA compatible controller
           product: 3rd Gen Core processor Graphics Controller
           vendor: Intel Corporation
           physical id: 2
           bus info: pci@0000:00:02.0
           version: 09
           width: 64 bits
           clock: 33MHz
           capabilities: msi pm vga_controller bus_master cap_list rom
           configuration: driver=i915 latency=0
           resources: irq:27 memory:f7400000-f77fffff memory:d0000000-dfffffff ioport:f000(size=64) memory:c0000-dffff

感觉像是驱动程序问题，但上次升级时，我花了一天时间才解决黑屏问题，所以如果有人能解决这个问题，我将不胜感激。谢谢！

Answer 1

解决方案是显而易见的解决方案，正如 Kulfy 所建议的那样：更新驱动程序。

$ sudo ubuntu-drivers autoinstall

然后重新启动。