[Bug 73418] New: OpenCL hangs graphics on CAYMAN - bugzilla-daemon

From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 73418] New: OpenCL hangs graphics on CAYMAN
Date: Thu, 09 Jan 2014 00:40:49 +0000	[thread overview]
Message-ID: <bug-73418-502@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=73418

          Priority: medium
            Bug ID: 73418
          Assignee: dri-devel@lists.freedesktop.org
           Summary: OpenCL hangs graphics on CAYMAN
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: v10lator@myway.de
          Hardware: Other
            Status: NEW
           Version: 10.0
         Component: Drivers/DRI/R600
           Product: Mesa

Created attachment 91722
  --> https://bugs.freedesktop.org/attachment.cgi?id=91722&action=edit
dmesg snippet from mesa 10.0.1

When I try to run some OpenCL code from within X the screen freezes, goes
black, goes on again while still frozen, ... this repeats a few times till it
won't come back again and all I have left is my monitor in standby and my
keyboard not reacting to any input.

When I try to run some OpenCL code from a console (Cntrl + Alt + F1) and go
back to X while the OpenCL code is still running it's the same as above.

When I try to run some OpenCL code from a console and go back to X after the
OpenCL code is finished I have a black monitor with my mouse cursor (I'm even
able to move it) for a few seconds, then my desktop is back. While it produces
the black screen (with mouse cursor) there's also GPU hang logged to dmesg.

Reproducable with bfgminer or the tests from
http://cgit.freedesktop.org/~tstellar/opencl-example/ with mesa 10.0.1 as well
as 10.1 (git-646c16a).

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