intel_drv.so crash

[grant123]

I'm having a tough time with an intermittent xorg crash that references intel_drv.so. I don't have the entire message from Xorg.0.log but I will save it next time. I've tried xf86-video-intel-2.21.15, 2.99.905, and 9999 but they all crash eventually. What else should I try? It might not happen if I use uxa instead of sna but then videos tear.

[grant123]

Here's the crash. What can I do?

[ 12021.732] (EE) Backtrace:
[ 12021.741] (EE) 0: /usr/bin/X (xorg_backtrace+0x36) [0x589746]
[ 12021.741] (EE) 1: /usr/bin/X (0x400000+0x18d3d9) [0x58d3d9]
[ 12021.741] (EE) 2: /lib64/libpthread.so.0 (0x7f5c707c5000+0x10460) [0x7f5c707d5460]
[ 12021.741] (EE) 3: /usr/lib64/xorg/modules/drivers/intel_drv.so (0x7f5c6e3ca000+0x2fe79) [0x7f5c6e3f9e79]
[ 12021.741] (EE) 4: /usr/lib64/xorg/modules/drivers/intel_drv.so (0x7f5c6e3ca000+0x3037f) [0x7f5c6e3fa37f]
[ 12021.741] (EE) 5: /usr/bin/X (0x400000+0x3713b) [0x43713b]
[ 12021.741] (EE) 6: /usr/bin/X (0x400000+0x3b176) [0x43b176]
[ 12021.741] (EE) 7: /usr/bin/X (0x400000+0x29c4a) [0x429c4a]
[ 12021.741] (EE) 8: /lib64/libc.so.6 (__libc_start_main+0xfd) [0x7f5c6f44a4bd]
[ 12021.741] (EE) 9: /usr/bin/X (0x400000+0x29f91) [0x429f91]
[ 12021.741] (EE)
[ 12021.741] (EE) Segmentation fault at address 0x0

[epsilon72]

Have you tried using uxa acceleration instead of sna?
See here for howto: https://wiki.archlinux.org/index.php/Intel_Graphics#Choose_acceleration_method
You'll also have to enable the 'uxa' use flag for x11-drivers/xf86-video-intel.

[grant123]

I think uxa does prevent the crash but then my screen tears when I'm watching a video.

[epsilon72]

If you're not using kde or gnome3 you can try using compton

This will get rid of screen tearing on intel by using opengl compositing with vsync. Just emerge 0.1_beta1 and run this command:

[grant123]

I'm on xfce4 and compton sounds pretty slick. Does it hurt performance much? I'll give that a try if I can't get the segfault fixed soon.