From: bugzilla-daemon@bugzilla.kernel.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 75711] New: Radeon: GPU recovery is unable to recover from GPU lockups (R9 270 - error in VDPAU).
Date: Thu, 08 May 2014 02:06:08 +0000 [thread overview]
Message-ID: <bug-75711-2300@https.bugzilla.kernel.org/> (raw)
https://bugzilla.kernel.org/show_bug.cgi?id=75711
Bug ID: 75711
Summary: Radeon: GPU recovery is unable to recover from GPU
lockups (R9 270 - error in VDPAU).
Product: Drivers
Version: 2.5
Kernel Version: 3.15-rc4
Hardware: x86-64
OS: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: Video(DRI - non Intel)
Assignee: drivers_video-dri@kernel-bugs.osdl.org
Reporter: t3st3r@mail.ru
Regression: No
Created attachment 135361
--> https://bugzilla.kernel.org/attachment.cgi?id=135361&action=edit
Failed GPU recovery - R9 270, VDPAU.
There are some cases when Radeon GPUs can lock up on some MESA errors and so
on. While it MESA bugs and somesuch, there is what I believe to be kernel side
bug as well.
Kernel side problem is how kernel handles GPU recovery procedure. Right now GPU
recovery would fail most of time on virtually any MESA bug and any GPUs, system
would be left in completely unusable state due to lack of graphic output.
This bug has been caught on 3.15-rc4 kernel running with recent MESA (oibaf PPA
on Ubuntu 14.04). GPU deadlock on R9 270 occured during VDPAU usage. As usually
;) GPU recovery failed to recover this GPU as well.
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