I'm quite puzzled about how to solve this.
I have Ubuntu 16.04, a Lenovo T420s laptop.
I updated recently, and when I restarted my computer, my screen was stretched out twice as wide. This occurs even before Ubuntu boots, on the Thinkpad start up screen. Below is one example where I was trying to run ubuntu in recovery mode.
sudo apt-get remove --purge xserver-xorg sudo apt-get install xserver-xorg sudo dpkg-reconfigure xserver-xorg
There was no change.
lspci | grep VGA:
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
When I boot into Windows, I can see the full screen, but there's a black strip maybe 1 inch wide on the right side.
In Ubuntu, when I try to adjust the "Displays" property in "Settings" it says, "Could not get screen information."
In Ubuntu, when I try to adjust the "Displays" property in "System Settings", it doesn't show anything strange, it looks normal, see screenshot below.
How else can I try to solve this problem?
Since it shows up on the Thinkpad start up screen before Ubuntu boots, it makes me think it's a hardware problem...but then it's funny that it appeared only after I rebooted my computer. And it's also funny that when I boot into Windows it doesn't have the exact same problem.
I've also tried updating the Intel Graphics drivers by downloading the Intel Graphics Installer and installing it:
dpkg -i intel-graphics-update-tool_2.0.2_amd64.deb
I also tried every display option in the bios boot up menu.
I tried downloading Ubuntu 18.04 onto an USB and booting from USB - the stretched screen remains the same.
There is one brief moment where my screen reverts back to normal, when I'm shutting down, there's one brief flash of a terminal screen with white letters on a black background in a normal aspect ratio. Otherwise everything is still stretched!
Any other ideas out there?