Created attachment 903020 [details] This is basically the upstream commit from Jan 6th by Chris Wilson Description of problem: Primus is part of a suite of software (bumblebee) that attempts to provide support for optimus notebooks until there is more official support in the kernel and from NVIDIA corp for such machines. https://github.com/amonakov/primus When using the primus bridge to run certain applications on the NVIDIA card, sometimes the window does not function properly and you get a "black" window. I have also seen the GNOME shell crash once. The problem is intermittent. Its hard to say how much it fails. Like maybe 1 out of 3 times or 1 out of 5 times. Here is a screenshot of what it looks like: http://i.imgur.com/zwOsEMg.png (should be glxgears spinning in that window) Evidently this problem has been fixed upstream and has to with SNA vs UXA... https://bugs.freedesktop.org/show_bug.cgi?id=73282 http://lists.freedesktop.org/archives/xorg-commit/2014-January/035794.html The patch did not apply for me pasting it from a web browser but after re-doing the patch and installing a patched package it does seem to fix the issue with the black window. So I have included it as a attachment. Version-Release number of selected component (if applicable): xorg-x11-drv-intel-2.21.15-5.fc20 How reproducible: Steps to Reproduce: 1. Install bumblebee on a optimus laptop as described here: http://fedoraproject.org/wiki/Bumblebee Only the closed source nvidia module is working at this time. And primus bridge only supports "nvidia" anyways. 2. log into GNOME or Cinnamon desktop. 3. Run a command like: PRIMUS_VERBOSE=2 optirun -b primus glxgears -info Over and over again closing the old window and eventually the window that opens is black and you have to CTRL-C to get back control of your terminal. Actual results: A window that is all black. Expected results: A window with spinning gears. Additional info: This has been opened as a github issue here: https://github.com/amonakov/primus/issues/140 Thanks!
I can confirm that this patch applied to the current intel driver src package fixes this issue. The symptoms are even worse on a KDE system and can crash kwin - though there are still some random xorg server segfaults (which don't appear to cause any visible issue) when running anything primus. It would be good to have an official fix for those of us with optimus laptops.
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