Created attachment 115123 [details] journalctl /usr/bin/X --since='2015-04-08 13:09:53' --until='2015-04-08 13:12:29' _PID=502 * Problem: Intermittent X crash (assertion failed) * Symptoms: X session terminates, gdm gives me a new login screen. I'm not yet sure how trigger the crash. It has happened to me twice now, but I haven't figured out what causes it or how to test for it. * Error message in logs: (EE) Backtrace: (EE) 0: /usr/bin/Xorg (xorg_backtrace+0x48) [0x581ea8] (EE) 1: /usr/lib64/xorg/modules/drivers/intel_drv.so (0x7f5c8fcff000+0x56277) [0x7f5c8fd55277] (EE) 2: /usr/lib64/xorg/modules/drivers/intel_drv.so (0x7f5c8fcff000+0x6eecf) [0x7f5c8fd6decf] (EE) 3: /usr/lib64/xorg/modules/drivers/intel_drv.so (0x7f5c8fcff000+0x3e32c) [0x7f5c8fd3d32c] (EE) 4: /usr/lib64/xorg/modules/drivers/intel_drv.so (0x7f5c8fcff000+0x3e551) [0x7f5c8fd3d551] (EE) 5: /usr/bin/Xorg (0x400000+0x11190c) [0x51190c] (EE) 6: /usr/bin/Xorg (0x400000+0x338cd) [0x4338cd] (EE) 7: /usr/bin/Xorg (0x400000+0x373ee) [0x4373ee] (EE) 8: /usr/bin/Xorg (0x400000+0x3b1eb) [0x43b1eb] (EE) 9: /lib64/libc.so.6 (__libc_start_main+0xf5) [0x30e4621ad5] (EE) 10: /usr/bin/Xorg (0x400000+0x2697e) [0x42697e] (EE) Fatal server error: (EE) has_coherent_ptr:1532 assertion '!priv->cpu_bo->needs_flush' failed * Software involved: X.Org X Server 1.17.1 (Release Date: 2015-02-10) Distro: Gentoo. Linux 3.18.11 (sys-kernel/gentoo-sources-3.18.11) # equery list '*xorg*' * Searching for *xorg* ... [IP-] [ ] x11-base/xorg-drivers-1.17:0 [IP-] [ ] x11-base/xorg-server-1.17.1-r1:0/1.17.1 [IP-] [ ] x11-base/xorg-x11-7.4-r2:0 [IP-] [ ] x11-misc/xorg-cf-files-1.0.5:0 # equery list 'x11-drivers/*' * Searching for * in x11-drivers ... [IP-] [ ] x11-drivers/xf86-input-evdev-2.9.2:0 [IP-] [ ] x11-drivers/xf86-input-keyboard-1.8.0:0 [IP-] [ ] x11-drivers/xf86-input-mouse-1.9.1:0 [IP-] [ ] x11-drivers/xf86-input-synaptics-1.8.2:0 [IP-] [ ] x11-drivers/xf86-video-intel-2.99.917:0 [IP-] [ ] x11-drivers/xf86-video-nouveau-1.0.11:0
Created attachment 115124 [details] journalctl /usr/bin/X --since='2015-04-16 13:22:21' --until='2015-04-16 15:15:26' _PID=496
commit 574ab948af15c8deaf5afa11bd79b2ea2d9c202d Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Wed Jan 7 14:08:05 2015 +0000 sna: Add mmap(wc) handling to has_coherent_ptr assertion Extend the debuging sanity checks to also cover WC mappings. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Easiest w/a is not to enable the debugging assertions, or just use the git version.
(Actually, fingers crossed that is the right bug!)
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