From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 111659] Kernel panic when waking up after screens go to dpms sleep
Date: Wed, 11 Sep 2019 11:39:00 +0000 [thread overview]
Message-ID: <bug-111659-502@http.bugs.freedesktop.org/> (raw)
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https://bugs.freedesktop.org/show_bug.cgi?id=111659
Bug ID: 111659
Summary: Kernel panic when waking up after screens go to dpms
sleep
Product: DRI
Version: unspecified
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: not set
Component: DRM/Radeon
Assignee: dri-devel@lists.freedesktop.org
Reporter: brad@fnarfbargle.com
Created attachment 145332
--> https://bugs.freedesktop.org/attachment.cgi?id=145332&action=edit
Multiple instances of the Panic
iMac late 2011 with 2 Thunderbolt displays.
Kernel 5.2 finally got DP routing working to allow both TB displays to work,
however I'm now getting lockups which appear to be triggered in
radeon_dp_needs_link_train.
I'm capturing these over netconsole as it leaves the machine paralysed.
Attachment faults.txt has 4 separate instances of the fault from 4 different
boots.
This machine stays on 24/7 and this seems to occur when the displays wake up
after a dpms sleep. Having said that I've also seen the fault when doing
something innocuous like changing the audio volume.
Generally at least 2 of the screens wakeup, so I have displays with a
lockscreen asking for a password and a mouse, but the machine is dead.
The last example in faults.txt left the machine in a state where I could ssh in
and reboot it. All the others required a hard power cycle.
I'm currently using 5.2.11. Previously I was using 4.17, but I can't roll back
prior to 5.2 without losing the second TB display, and it can take hours or
days to hit so bisection would be difficult.
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Blackcomb [Radeon HD 6970M/6990M] (prog-if 00 [VGA controller])
Subsystem: Apple Inc. Radeon HD 6970M
Flags: bus master, fast devsel, latency 0, IRQ 79
Memory at 90000000 (64-bit, prefetchable) [size=256M]
Memory at a8800000 (64-bit, non-prefetchable) [size=128K]
I/O ports at 2000 [size=256]
Expansion ROM at a8820000 [disabled] [size=128K]
Capabilities: [50] Power Management version 3
Capabilities: [58] Express Legacy Endpoint, MSI 00
Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010
<?>
Capabilities: [150] Advanced Error Reporting
Kernel driver in use: radeon
Kernel modules: radeon
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next reply other threads:[~2019-09-11 11:39 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-11 11:39 bugzilla-daemon [this message]
2019-09-11 11:39 ` [Bug 111659] Kernel panic when waking up after screens go to dpms sleep bugzilla-daemon
2019-09-11 11:39 ` bugzilla-daemon
2019-09-11 14:26 ` bugzilla-daemon
2019-09-26 3:51 ` bugzilla-daemon
2019-09-26 4:43 ` bugzilla-daemon
2019-10-28 8:14 ` bugzilla-daemon
2019-10-28 11:57 ` bugzilla-daemon
2019-10-31 7:42 ` bugzilla-daemon
2019-11-19 0:30 ` bugzilla-daemon
2019-11-19 8:02 ` bugzilla-daemon
2019-11-19 9:35 ` bugzilla-daemon
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