[Bug 107955] New: AMDGPU driver keeps reloading on hybrid graphics system causing stuttering.

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107955

Bug ID: 107955
Summary: AMDGPU driver keeps reloading on hybrid graphics
system causing stuttering.
Product: xorg
Version: unspecified
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: major
Priority: medium
Component: Driver/AMDgpu
Assignee: xorg-driver-***@lists.x.org
Reporter: ***@gmail.com
QA Contact: xorg-***@lists.x.org

Hi,

My system at the time of writing is a Lenovo Y40-80 with a Intel i7-5500U and a
AMD Radeon R9 M275 2GB. The OS I have installed is Arch Linux installed.


Linux Y40-80 4.18.7-arch1-1-ARCH #1 SMP PREEMPT Sun Sep 9 11:27:58 UTC 2018
x86_64 GNU/Linux

Right now it seems AMDGPU is constantly restarting itself and this reloading is
causing stuttering. I keep seeing the following two lines constantly repeating
in my 'dmesg' log.

[drm] PCIE gen 2 link speeds already enabled
amdgpu 0000:05:00.0: PCIE GART of 1024M enabled (table at 0x000000F400000000).



My goal is to make use of the integrated Intel graphics for everything and use
the AMD graphics when needed with PRIME. This sort of works but I don't know
why I'm getting those messages repeated over and over with stuttering.

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107955

Ransu <***@gmail.com> changed:

What |Removed |Added
----------------------------------------------------------------------------
Priority|medium |highest
Severity|major |critical

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107955

--- Comment #1 from Ransu <***@gmail.com> ---
By stuttering I mean every animation stops for a second or so. This happens
every few seconds, it's especially annoying during video playback.

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107955

Michel DÀnzer <***@daenzer.net> changed:

What |Removed |Added
----------------------------------------------------------------------------
QA Contact|xorg-***@lists.x.org |
Assignee|xorg-driver-***@lists.x.org |dri-***@lists.freedesktop
| |.org
Product|xorg |DRI
Component|Driver/AMDgpu |DRM/AMDgpu

--- Comment #2 from Michel DÀnzer <***@daenzer.net> ---
The messages appear when the AMD GPU is woken up due to userspace using some
functionality of the amdgpu kernel driver.

Does

amdgpu.runpm=0

on the kernel command line prevent the stuttering? If so, I hope somebody can
help you track down how userspace is causing the AMD GPU to wake up.

(Note that the above will keep the AMD GPU powered on all the time; it's
intended to confirm that the stuttering is related to powering up the AMD GPU,
not as a permanent solution)