Comment 22 for bug 1848741

Revision history for this message
Gary (wrtiap) wrote : Re: [amdgpu] Ubuntu 19.10 horizontal graphics corruption on AMD Ryzen 2500u (Raven Ridge)

I fixed it by adding a few lines in my /etc/default/grub file! (not sure which exactly which one of the 3 fixed it)
In the line (GRUB_CMDLINE_LINUX_DEFAULT=) I added to the quotes: iommu=soft processor.max_cstate=5 idle=nomwait
If anyone can explain what they each do/which ones are necessary that would be great as well (if it also fixes it for other people)!

I found these commands from:
https://forum.manjaro.org/t/amd-ryzen-problems-and-fixes/55533
https://www.reddit.com/r/Amd/comments/apw8im/ryzen_freezes_in_linux_even_if_linux_is_in_vm/
https://askubuntu.com/questions/1181819/ubuntu-keeps-crashing-on-huawei-matebook-d-ryzen-5-2500u