Bug 110574

Summary:

System hang after screen power saving

Product:

DRI

Reporter:

Joakim <number048>

Component:

DRM/AMDgpu

Assignee:

Default DRI bug account <dri-devel>

Status:

RESOLVED WONTFIX

QA Contact:

Severity:

normal

Priority:

medium

CC:

nicholas.kazlauskas

Version:

XOrg git

Hardware:

x86-64 (AMD64)

OS:

Linux (All)

Whiteboard:

i915 platform:

i915 features:

Attachments:

Description	Flags
dmesg	none

Description Joakim 2019-05-01 18:56:49 UTC

Created attachment 144122 [details]
dmesg

After updating to Xubuntu 19.04 I started having problems with the screen saver feature. After a request for the monitor to go into power saving mode I am unable to recover the system. When the monitor turns on again I get the last image shown but I cannot move the cursor, nothing on the screen is moving, everything is frozen and I cannot use ssh to access the machine.

Later I discovered that I could access the computer using ssh before I let the monitor enter power saving mode and I was then able to save a copy of dmesg.

As soon as the monitor is turned off by the system the crash happens:

[ 2674.166451] general protection fault: 0000 [#1] SMP NOPTI
...
[ 2674.166530] RIP: 0010:dce110_vblank_set+0x4f/0xa0 [amdgpu]

with the last 5 entries of the call trace:

[ 2674.166624]  dal_irq_service_set+0x4c/0x90 [amdgpu]
[ 2674.166687]  dc_interrupt_set+0x24/0x30 [amdgpu]
[ 2674.166753]  dm_enable_vblank+0x2a/0x40 [amdgpu]
[ 2674.166768]  drm_vblank_enable+0xe2/0x130 [drm]
[ 2674.166781]  drm_vblank_get+0x92/0xb0 [drm]

I was using the Oibaf PPA both before and after I updated to Xubuntu 19.04.
I tried to use the kernel v5.1-rc7 from the Ubuntu mainline:
https://kernel.ubuntu.com/~kernel-ppa/mainline/

My linux command line:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash radeon.cik_support=0 amdgpu.cik_support=1 amdgpu.dc=1"

Comment 1 Joakim 2019-05-01 19:03:49 UTC

My current kernel version in Ubuntu:

5.0.0-13-generic #14-Ubuntu SMP Mon Apr 15 14:59:14 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

Comment 2 Joakim 2019-05-01 19:11:04 UTC

I forgot to mention that the bug is circumvented if vertical synchronisation is disabled in the XFCE compositor.

Comment 3 Joakim 2019-10-22 21:57:20 UTC

Since newer version of XFCE works differently I can no longer test for this bug as it no longer crashes regardless of which option I use for vertical sync (new glx setting or the old one).

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.