[Bug 107781] New: amdgpu hangs on resume on Lenovo A475

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107781

Bug ID: 107781
Summary: amdgpu hangs on resume on Lenovo A475
Product: xorg
Version: unspecified
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Driver/AMDgpu
Assignee: xorg-driver-***@lists.x.org
Reporter: ***@gmx.de
QA Contact: xorg-***@lists.x.org

Created attachment 141410
--> https://bugs.freedesktop.org/attachment.cgi?id=141410&action=edit
inxi output

The system doesn't wake up correctly from susped to RAM. Sometimes it works,
often the screen comes back black or with the last view before suspend, frozen.
Happens more often when docked. SSH is still possible in most cases, only the
graphical interface is dead.

dmesg shows this:

[32756.191289] [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring sdma0 timeout,
last signaled seq=168244, last emitted seq=168246
[32756.191301] [drm] IP block:sdma_v3_0 is hung!
[32756.191305] [drm] GPU recovery disabled.

It doesn't matter whether suspend was called via lid switch, button, GUI or
shell script, or if the lid signal is disabled or not.

OS: Fedora 28, kernel 4.17.19-200.fc28.x86_64

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107781

--- Comment #1 from Alex Findler <***@gmx.de> ---
Created attachment 141411
--> https://bugs.freedesktop.org/attachment.cgi?id=141411&action=edit
lspci output

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107781

--- Comment #2 from Alex Findler <***@gmx.de> ---
Created attachment 141412
--> https://bugs.freedesktop.org/attachment.cgi?id=141412&action=edit
dmesg output after hang

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107781

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

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

--- Comment #3 from Michel DÀnzer <***@daenzer.net> ---
Did it work with older kernels?

Does iommu=soft on the kernel command line avoid the problem?