Screen does not wake up after resume (AMD Ryzen 7 Pro 4750U) #6923
Description
Solved as of
linux-firmware-20230123-135.fc32.noarch
xen-4.14.5-20.fc32.x86_64
kernel-latest-6.2.10-1.qubes.fc32.x86_64
Qubes OS release
R4.1,
kernel 5.14.7-1 (fedora 5.14) (same behavior in lower kernels.)
XEN 4.14.3 (build from @marmarek branch)
Brief summary
Laptops does not resume after third sleep/resume cycle.
The problem seems to be with
[drm] psp command (0x7) failed and response status is (0xFFFF0007)
[drm:psp_hw_start [amdgpu]] *ERROR* PSP load tmp failed!
It feels like there's a hung process in the amdgpu drivers for some reason.
Not sure how to debug this properly, XEN is not giving me much info at all.
The problem is visible with X started as well obviously but I try to make the bug surface smaller.
Steps to reproduce
Boot laptop with X disabled, no VMs started.
run systemctl suspend three times (and resuming)
run reboot to restore system
Expected behavior
Possible to suspend limitless.
Actual behavior
Screen does not wake up on third resume. It's possible to write reboot and restart.
Notes
Works well with kernel booted without XEN.
crash.filtered.log
crash.filtered.xen.log
Workarounds
A bit more testing is needed but I do have sort of stable suspend/resume now. It even survives when everything goes south.
There's a bit of tearing, but I'd rather have suspend than tearing.
cat << > /etc/X11/xorg.conf.d/50-video.conf
Section "Device"
Identifier "card0"
Driver "amdgpu"
Option "AccelMethod" "none"
EndSection
Compile xorg-x11-drv-amdgpu from https://github.com/freedesktop/xorg-xf86-video-amdgpu
Run make install and install amdgpu_drv.so in /usr/lib64/xorg/modules/drivers on dom0.
For more stability run with kernel cmdline preempt=none
Do note that e.g. 4k external screen will be royally sluggish.
Sometimes the screen turns up black, type in the password anyhow and switch to tty2 and back again / suspend-resume again and it will most likely come to life again. Suspend/resume too fast could lead to instant reboot.