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).