second monitor suddenly not detected

[Karl Auer]

On Sat, 2020-09-26 at 11:30 +1000, Karl Auer wrote:
> Upon powering up, Ubuntu did not detect my second HDMI-connected
> monitor. There are a couple of other niggles, such as a Gnome shell
> extension having vanished. And the gnome tweaks tool doesn't show 90%
> of the tweaks it used to. But the display looks OK otherwise.

More info on this: This does not look right:

kauer at kt1:~$ xrandr -q
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1920 x 1080, current 1920 x 1080, maximum 1920 x 1080
default connected primary 1920x1080+0+0 0mm x 0mm
   1920x1080     77.00* 

kauer at kt1:~$ sudo lshw -C video
  *-display UNCLAIMED       
       description: VGA compatible controller
       product: TU116M [GeForce GTX 1660 Ti Mobile]
       vendor: NVIDIA Corporation
       physical id: 0
       bus info: pci at 0000:01:00.0
       version: a1
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress vga_controller cap_list
       configuration: latency=0
       resources: memory:b3000000-b3ffffff memory:a0000000-afffffff
memory:b0000000-b1ffffff ioport:4000(size=128) memory:b2000000-b207ffff


-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Karl Auer (kauer at biplane.com.au)
http://www.biplane.com.au/kauer

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