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oliverguenther's questions

Martin Hope
oliverguenther
Asked: 2020-08-28 23:50:39 +0800 CST
  • 44

Since updating to Google Chrome 85.0.4183.83 (Official build) on my Ubuntu 20.04.1 machine, Chrome is exhibiting some weird flickering. Especially in the top left corner, chunks of pixels are showing on keyboard input or mouse movements. The following GIF I just recorded on this page while typing this question.

Is there any permanent fix for this behavior? It seems that disabling hardware acceleration in the settings is a workaround for this.

I couldn't find any bug reports on their issue tracker.

Chrome pixel glitches

Graphics output of inxi:

Graphics:  Device-1: Advanced Micro Devices [AMD/ATI] Hawaii PRO [Radeon R9 290/390] vendor: ASUSTeK driver: radeon v: kernel 
       bus ID: 01:00.0 chip ID: 1002:67b1 
       Display: x11 server: X.Org 1.20.8 driver: ati,fbdev unloaded: modesetting,radeon,vesa compositor: gnome-shell 
       resolution: 2560x1440~60Hz, 1920x1200~60Hz 
       OpenGL: renderer: AMD HAWAII (DRM 2.50.0 5.4.0-42-generic LLVM 10.0.0) v: 4.5 Mesa 20.0.8 direct render: Yes

Output from chrome://gpu

enter image description here

Full output: https://pastebin.com/Lkbe8FuV

graphics google-chrome radeon
Martin Hope
oliverguenther
Asked: 2020-04-25 00:24:57 +0800 CST
  • 4

I upgraded from 18.04 to 20.04. LTS and the update-manager crashed with "Oh no. Something has gone wrong" in the process of upgrading. Through the terminal, I seemingly completed the upgrade with the steps from here and can boot into the system fine now.

I found out that the kernel has not been updated and I'm still running on 4.15

$ uname -a
Linux ubuntu 4.15.0-96-generic #97-Ubuntu SMP Wed Apr 1 03:25:46 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

I tried to install the 5.4 kernel with

apt install linux-headers-5.4.0-26-generic linux-image-5.4.0-26-generic

which worked fine and I restarted the system. From there, I noticed the screen was in low resolution and lshw -c video did no longer use the radeon driver.

On 4.15, it uses the correct driver and all seems well:

root@ubuntu:/home/oliver# lshw -c video
  *-display                 
       description: VGA compatible controller
       product: Hawaii PRO [Radeon R9 290/390]
       vendor: Advanced Micro Devices, Inc. [AMD/ATI]
       physical id: 0
       bus info: pci@0000:01:00.0
       version: 80
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
       configuration: driver=radeon latency=0
       resources: irq:141 memory:c0000000-cfffffff memory:d0000000-d07fffff ioport:e000(size=256) memory:dfe00000-dfe3ffff memory:c0000-dffff

How can I update to the newer kernel while retaining radeon graphics driver support?

kernel radeon 20.04