*** This bug is a duplicate of bug 1958412 ***
https://bugs.launchpad.net/bugs/1958412
** Tags added: amdgpu focal
** Summary changed:
- Screen garbled on login and freezes on unsuspend
+ [amdgpu] Screen garbled on login and freezes on unsuspend
** This bug has been marked a duplicate of bug 1958412
[amdgpu] at startup and shutdown screen gets white noise
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https://bugs.launchpad.net/bugs/1958248
Title:
[amdgpu] Screen garbled on login and freezes on unsuspend
Status in linux package in Ubuntu:
Confirmed
Bug description:
1. The login manager works but as soon as I log in, the screen is
filled with colored vertical stripes and is unusable. I found that if
I change the screen resolution to the maximum (1920x1080), then the
screen is ok. Any other resolution that I've tried (eg (1440x900 used
to be my preference) causes the unreadable display and it does not
revert back, requiring a reboot.
2. Coming out of suspend, the password entry screen is displayed, but
there is no response to keyboard or mouse, requiring a reboot.
HP Envy x360 laptop with AMD Ryzen 7 with Radeon graphics
Last known kernel that worked is 5.11.0-46
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