App-switcher (alt-tab) hangs when playing video

[torbjorn]

If I use any of the two application switchers (Application Switcher and Static A. S. in ccsm), and I have a windows that plays video, compiz hangs at 100% cpu and in practice becomes unresponsive.

This started occuring the last 3-4 weeks and is 100% reproducible.

Likely suspet is the binary nvidia driver. lspci says
01:00.0 VGA compatible controller: NVIDIA Corporation GK110 [GeForce GTX 780](rev a1)

Currently running NVIDIA-Linux-x86_64-340.32.run from nvidia.com and $(uname -r) is 3.16.6-200.fc20.x86_64

[torbjorn]

Version:
$ rpm -q compiz
compiz-0.8.8-27.fc20.x86_64

[KristianLyng]

Could you change to console when this happens and attach strace to compiz to see what is going on? E.g. strace -p pidofcompiz. And is it compiz or xorg or a mix that uses all the CPU?

[torbjorn]

ill try but its fairly unresponsive

ssh into it might work

it does not reproduce on a laptop with intel graphics
On Nov 15, 2014 12:05 AM, "Kristian Lyngstøl" [email protected]
wrote:

Could you change to console when this happens and attach strace to compiz
to see what is going on? E.g. strace -p pidofcompiz. And is it compiz or
xorg or a mix that uses all the CPU?

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