Public bug reported:
~ % cat /var/log/xdm.log
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
resize called 1920 1200
Fri Apr 22 06:40:03 2016 xdm info (pid 1185): sourcing /etc/X11/xdm/Xsetup
Fri Apr 22 06:40:13 2016 xdm info (pid 1185): sourcing /etc/X11/xdm/Xstartup
Fri Apr 22 06:40:13 2016 xdm info (pid 1270): executing session
/etc/X11/xdm/Xsession
resize called 3840 1200
resize called 1920 1200
(EE) [mi] EQ overflowing. Additional events will be discarded until existing
events are processed.
(EE)
(EE) Backtrace:
(EE) 0: /usr/lib/xorg/Xorg (xorg_backtrace+0x4e) [0x556f131ab50e]
(EE) 1: /usr/lib/xorg/Xorg (mieqEnqueue+0x253) [0x556f1318cfd3]
(EE) 2: /usr/lib/xorg/Xorg (QueuePointerEvents+0x52) [0x556f13065672]
(EE) 3: /usr/lib/xorg/modules/input/evdev_drv.so (0x7f27e5385000+0x61f3)
[0x7f27e538b1f3]
(EE) 4: /usr/lib/xorg/modules/input/evdev_drv.so (0x7f27e5385000+0x6a5d)
[0x7f27e538ba5d]
(EE) 5: /usr/lib/xorg/Xorg (0x556f12ff9000+0x94248) [0x556f1308d248]
(EE) 6: /usr/lib/xorg/Xorg (0x556f12ff9000+0xb9712) [0x556f130b2712]
(EE) 7: /lib/x86_64-linux-gnu/libc.so.6 (0x7f27ee6a6000+0x354a0)
[0x7f27ee6db4a0]
(EE) 8: /lib/x86_64-linux-gnu/libc.so.6 (ioctl+0x5) [0x7f27ee7a2685]
(EE) 9: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmIoctl+0x28) [0x7f27efa880f8]
(EE) 10: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmCommandWrite+0x1b)
[0x7f27efa8adbb]
(EE) 11: /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 (nouveau_bo_wait+0xbc)
[0x7f27ea7d103c]
(EE) 12: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0x7f27ea9d6000+0xc839)
[0x7f27ea9e2839]
(EE) 13: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0x7f27ea9d6000+0xd25d)
[0x7f27ea9e325d]
(EE) 14: /usr/lib/xorg/Xorg (DRI2SwapBuffers+0x1c8) [0x556f1317da98]
(EE) 15: /usr/lib/xorg/Xorg (0x556f12ff9000+0x18632c) [0x556f1317f32c]
(EE) 16: /usr/lib/xorg/Xorg (0x556f12ff9000+0x53bbf) [0x556f1304cbbf]
(EE) 17: /usr/lib/xorg/Xorg (0x556f12ff9000+0x57c43) [0x556f13050c43]
(EE) 18: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf0)
[0x7f27ee6c6830]
(EE) 19: /usr/lib/xorg/Xorg (_start+0x29) [0x556f1303af59]
(EE)
(EE) [mi] These backtraces from mieqEnqueue may point to a culprit higher up
the stack.
(EE) [mi] mieq is *NOT* the cause. It is a victim.
(EE) [mi] EQ overflow continuing. 100 events have been dropped.
(EE)
(EE) Backtrace:
(EE) 0: /usr/lib/xorg/Xorg (xorg_backtrace+0x4e) [0x556f131ab50e]
(EE) 1: /usr/lib/xorg/Xorg (QueuePointerEvents+0x52) [0x556f13065672]
(EE) 2: /usr/lib/xorg/modules/input/evdev_drv.so (0x7f27e5385000+0x61f3)
[0x7f27e538b1f3]
(EE) 3: /usr/lib/xorg/modules/input/evdev_drv.so (0x7f27e5385000+0x6a5d)
[0x7f27e538ba5d]
(EE) 4: /usr/lib/xorg/Xorg (0x556f12ff9000+0x94248) [0x556f1308d248]
(EE) 5: /usr/lib/xorg/Xorg (0x556f12ff9000+0xb9712) [0x556f130b2712]
(EE) 6: /lib/x86_64-linux-gnu/libc.so.6 (0x7f27ee6a6000+0x354a0)
[0x7f27ee6db4a0]
(EE) 7: /lib/x86_64-linux-gnu/libc.so.6 (ioctl+0x5) [0x7f27ee7a2685]
(EE) 8: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmIoctl+0x28) [0x7f27efa880f8]
(EE) 9: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmCommandWrite+0x1b)
[0x7f27efa8adbb]
(EE) 10: /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 (nouveau_bo_wait+0xbc)
[0x7f27ea7d103c]
(EE) 11: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0x7f27ea9d6000+0xc839)
[0x7f27ea9e2839]
(EE) 12: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0x7f27ea9d6000+0xd25d)
[0x7f27ea9e325d]
(EE) 13: /usr/lib/xorg/Xorg (DRI2SwapBuffers+0x1c8) [0x556f1317da98]
(EE) 14: /usr/lib/xorg/Xorg (0x556f12ff9000+0x18632c) [0x556f1317f32c]
(EE) 15: /usr/lib/xorg/Xorg (0x556f12ff9000+0x53bbf) [0x556f1304cbbf]
(EE) 16: /usr/lib/xorg/Xorg (0x556f12ff9000+0x57c43) [0x556f13050c43]
(EE) 17: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf0)
[0x7f27ee6c6830]
(EE) 18: /usr/lib/xorg/Xorg (_start+0x29) [0x556f1303af59]
(EE)
(EE) [mi] EQ overflow continuing. 200 events have been dropped.
My system info:
~ % uname -a
Linux linux-swadnerkar 4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18 18:33:37 UTC
2016 x86_64 x86_64 x86_64 GNU/Linux
~ % cat /etc/debian_version
stretch/sid
~ % lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu Xenial Xerus (development branch)
Release: 16.04
Codename: xenial
~ %
** Affects: xserver-xorg-video-nouveau (Ubuntu)
Importance: Undecided
Status: New
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which is subscribed to xserver-xorg-video-nouveau in Ubuntu.
https://bugs.launchpad.net/bugs/1573773
Title:
System freezes randomly a few times a day
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