On most of my systems the F17 to F18 upgrade went well. On the main one, my desktop, I'm seeing a string of failures that leaves the display in various states of unusable depending on the positions of the stars and planets. The file /var/log/messages contains the following and the displays have messed up icons and background images. It looks like the frame buffer is just displaying random snippets of past items in some mosaic-ed pattern.
2013-01-27T20:06:10.077567-08:00 arbol kernel: [ 28.832592] [TTM] Failed to find memory space for buffer 0xffff88021ceda848 eviction 2013-01-27T20:06:10.077590-08:00 arbol kernel: [ 28.832604] [TTM] No space for ffff88021ceda848 (9660 pages, 38640K, 37M) 2013-01-27T20:06:10.077592-08:00 arbol kernel: [ 28.832609] [TTM] placement[0]=0x00070002 (1) 2013-01-27T20:06:10.077593-08:00 arbol kernel: [ 28.832613] [TTM] has_type: 1 2013-01-27T20:06:10.077595-08:00 arbol kernel: [ 28.832616] [TTM] use_type: 1 2013-01-27T20:06:10.077596-08:00 arbol kernel: [ 28.832619] [TTM] flags: 0x0000000A 2013-01-27T20:06:10.077597-08:00 arbol kernel: [ 28.832621] [TTM] gpu_offset: 0x20000000 2013-01-27T20:06:10.077599-08:00 arbol kernel: [ 28.832624] [TTM] size: 131072 2013-01-27T20:06:10.077600-08:00 arbol kernel: [ 28.832627] [TTM] available_caching: 0x00070000 2013-01-27T20:06:10.077601-08:00 arbol kernel: [ 28.832629] [TTM] default_caching: 0x00010000
Does this ring a bell with anyone? Is there something I can turn off (perhaps in Xorg.conf) to stop this lossage perhaps at some cost in CPU time or speed? It feels like it must be some video acceleration hack gone awry. Why else would the kernel get involved in this level of xorg userland drawing to the framebuffer?
I put in a bugzilla for this a dozen days ago, but so far, not even a peep from anyone. I figured I'd try for a larger audience.
https://bugzilla.redhat.com/show_bug.cgi?id=896170
-wolfgang
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Wolfgang S. Rupprecht