https://bugs.freedesktop.org/show_bug.cgi?id=99275
--- Comment #19 from Alex Deucher alexdeucher@gmail.com --- (In reply to Reimar Imhof from comment #18)
That firmware kills kde / plasma5 and freezes the machine!
What I've done: Copied the firmware files to /lib/firmware/amdgpu/ ran dracut to build new initrd reboot
graphical login comes up after logging in to kde plasma 5 the machine freezes
After a hard power of I logged into icewm. That desktop came up. I opened an console. Ok. Started dolphin. Machine has frozen immediately. Even the clock in the desktop toolbar stopped working.
Before starting dolphin I had a look at dmesg. I couldn't find any new error messages. Unfortunately I do not have these messages around any more. I also had a look at the /var/log/Xorg.<i>.log There was no log written from the kde session freezing the machine.
Could you please test that firmware with a kde plasma 5 desktop? Please!
Can you just try updating the smc firmware?