I updated (not upgraded) my laptop running 16.04, and I don't know what happened but after a reboot my screen resolution changed and I can't change it back.
Under the Settings->Displays I only have "1024x768 (4:3)" option, and it makes my screen all crooked because that's not the original aspect ratio or resolution.
I have a NVidia G-Fource 540M card, with the NVidia-367 driver. I tried to change drivers but it didn't help.
I also have the
nomodeset flag in grub, as I had a problem recently with lightdm and logging in.
sudo lspci | grep -i vga
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 01:00.0 VGA compatible controller: NVIDIA Corporation GF108M [GeForce GT 540M] (rev a1)
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*
I am so tired of having problems with my display recently... It's so annoying :\