Created attachment 142423 [details] dmesg output With Gentoo's 4.19.0 and 4.19.1 kernels, powerplay does not seem to be working on my Radeon R9 380X card: 3D applications run noticeably slower than before (but otherwise work fine) and there a number of errors in dmesg during startup and when trying to switch dpm states via sysfs. Everything works fine with 4.18.17-gentoo.
Does this patch fix the issue? https://patchwork.freedesktop.org/patch/259364/
If not, can you bisect?
FYI the patch did fix the same issue for me with an R9 380
*** Bug 108778 has been marked as a duplicate of this bug. ***
Could somebody please attach "sudo lspci -vvxxx" output for an affected system (for at least the root port and GPU, or the whole system if that's easier)?
Created attachment 142530 [details] lspci -vvxx output under 4.18.17-gentoo
Created attachment 142617 [details] dmesg output on Arch Linux I think I'm affected by a similar issue. I'm using an AMD R9 380 on Arch Linux with the latest GNOME version. My main troubles are with dual-screen, which started malfunctioning some days ago - maybe since the 4.19 kernel update, although I'm unable to downgrade to an older kernel to confirm this.
Created attachment 142618 [details] sudo lspci -vvxxx on 4.19.2-arch1-1-ARCH
Please try the patch in comment 1.
(In reply to Alex Deucher from comment #9) > Please try the patch in comment 1. I've applied the patch and there are no more amdgpu related errors showing up in dmesg after booting. However, this has not fixed my dual-screen issues; my HDMI TV displays "no signal" after booting while plugged in my computer, and when trying to switch display modes using the GNOME control center, my DVI screen tends to get disabled and display "no signal" too, forcing me to hard reboot. As far as I can tell, this is the same behavior than before using the patched kernel. So, my issues may not be related to this bug ticket after all.
(In reply to Laurent Pointecouteau from comment #10) > (In reply to Alex Deucher from comment #9) > > Please try the patch in comment 1. > > I've applied the patch and there are no more amdgpu related errors showing > up in dmesg after booting. However, this has not fixed my dual-screen > issues; my HDMI TV displays "no signal" after booting while plugged in my > computer, and when trying to switch display modes using the GNOME control > center, my DVI screen tends to get disabled and display "no signal" too, > forcing me to hard reboot. As far as I can tell, this is the same behavior > than before using the patched kernel. So, my issues may not be related to > this bug ticket after all. Please file a different bug for the display issue.
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.