Ubuntu
xserver-xorg-video-intel package

  1. Bug #597094
  2. Comment #13

Comment 13 for bug 597094

Revision history for this message
In , Chris Wilson (ickle) wrote :

Thanks Brian, whilst the bug may affect a particular class of program, it is vital to have a test case which is known to fail on your machine. I haven't yet managed to trigger a hang, and the way it only fails infrequently for you, implies a race condition.

The code itself appears sane, it does a ShmPutImage to transfer the bytes directly to the window (so here that will write directly onto the screen frontbuffer) and then immediately does a Sync.

Brian, when it hangs is it still consuming cpu time? i.e. is it simply X no longer updating the window or has it blocked the application as well?