I've been using ubuntu 20.04 on a Thinkpad t430s with intel graphics for around a year now with no problems. Yesterday, Ubuntu asked me to install an update. After the update, my graphics was suddenly extremely glitchy. Icons from the desktop flash through my browser, scrolling is inconsistent. Sometimes graphics breaks down altogether and I have to restart the laptop.
The problems are worse in xorg. Switching to Ubuntu on Wayland makes it usable (although still glitchy), but xorg is terrible. I tried
sudo apt purge install xserv-xorg-video-intel
sudo apt-get install xserv-xorg-video-intel
but xorg is still as glitchy as ever. Wayland is usable, but still having problems (for example, rendering features of my firefox add-ons).
I believe I have the T430s with only intel graphics.
sudo lshw -c video
yields
*-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:33 memory:d0000000-d03fffff memory:c0000000-cfffffff ioport:5000(size=64) memory:c0000-dffff
Has anyone got any ideas on how I can fix this? Otherwise, I am going to have to reinstall everything and probably restart with 18.04.
