Ubuntu
xserver-xorg-video-nouveau package

Xorg crashed with SIGABRT in NVAccelMemcpyRect() on nouveau

Bug #1166522 reported by Patrik Lundquist on 2013-04-08

This bug report is a duplicate of: Bug #1033533: Xorg crashed with SIGABRT: exaMemcpyBox with src=0x0 on nouveau with SW rendering. Edit Remove

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	xserver-xorg-video-nouveau (Ubuntu)	New	Undecided	Unassigned

Bug Description

Test with patch from https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/1033533/comments/33 .

ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: xserver-xorg-core 2:1.13.3-0ubuntu4
ProcVersionSignature: Ubuntu 3.8.0-17.27-generic 3.8.6
Uname: Linux 3.8.0-17-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.9.2-0ubuntu5
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
Date: Tue Apr 9 01:21:14 2013
DistUpgraded: 2013-01-30 03:34:50,679 DEBUG enabling apt cron job
DistroCodename: raring
DistroVariant: ubuntu
ExecutablePath: /usr/bin/Xorg
ExtraDebuggingInterest: Yes
GraphicsCard:
NVIDIA Corporation G92 [GeForce 8800 GT] [10de:0611] (rev a2) (prog-if 00 [VGA controller])
Subsystem: XFX Pine Group Inc. Device [1682:2330]
MachineType: System manufacturer System Product Name
MarkForUpload: True
ProcCmdline: /usr/bin/X :0 -background none -verbose -auth /run/gdm/auth-for-gdm-x78vkj/database -nolisten tcp vt7
ProcEnviron:
LANG=en_US.UTF-8
TERM=linux
PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-17-generic root=UUID=615f02d8-8bf1-4c07-bf26-9f8b2230d6d6 ro pcie_aspm=force
Signal: 6
SourcePackage: xorg-server
StacktraceTop:
memcpy (__len=1310720, __src=0x7f05fdd3e000, __dest=0x7f060b06c1f0) at /usr/include/x86_64-linux-gnu/bits/string3.h:51
NVAccelMemcpyRect (line_len=4096, src_pitch=4096, dst_pitch=4096, height=320, src=0x7f05fdd3e000 <Address 0x7f05fdd3e000 out of bounds>, dst=0x7f060b06c1f0 "") at nouveau_exa.c:33
nouveau_exa_download_from_screen (pspix=pspix@entry=0x7f060ab2d5e0, x=0, y=0, w=1024, h=320, dst=0x7f060b06c1f0 "", dst_pitch=4096) at nouveau_exa.c:329
exaCopyDirty (migrate=migrate@entry=0x7fffa3398210, pValidDst=0x7f060ab2d680, pValidSrc=0x7f060ab2d690, transfer=0x7f0604b990c0 <nouveau_exa_download_from_screen>, fallback_index=fallback_index@entry=1, sync=0x7f0603d37790 <exaWaitSync>) at ../../exa/exa_migration_classic.c:220
exaCopyDirtyToSys (migrate=migrate@entry=0x7fffa3398210) at ../../exa/exa_migration_classic.c:285
Title: Xorg crashed with SIGABRT in memcpy()
UpgradeStatus: Upgraded to raring on 2013-01-30 (68 days ago)
UserGroups:

dmi.bios.date: 12/24/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0806
dmi.board.name: P5WD2-Premium
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0806:bd12/24/2009:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5WD2-Premium:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
version.compiz: compiz 1:0.9.9~daily13.04.05-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.43-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0.3-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0.3-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu4
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.5-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.7-0ubuntu1
xserver.bootTime: Tue Apr 9 01:24:11 2013
xserver.configfile: /etc/X11/xorg.conf
xserver.devices:
input Power Button KEYBOARD, id 6
input Power Button KEYBOARD, id 7
input Microsoft Natural Keyboard Pro KEYBOARD, id 8
input Microsoft Natural Keyboard Pro KEYBOARD, id 9
input Microsoft Microsoft Basic Optical Mouse MOUSE, id 10
xserver.errors:
Failed to load module "nvidia" (module does not exist, 0)
Failed to load module "nvidia" (module does not exist, 0)
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.3-0ubuntu4
xserver.video_driver: nouveau

Tags:

Revision history for this message

Patrik Lundquist (patrik-lundquist) wrote on 2013-04-08:

BootDmesg.txt Edit (55.5 KiB, text/plain; charset="utf-8")
BootLog.txt Edit (2.9 KiB, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (3.0 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (4.1 KiB, text/plain; charset="utf-8")
Disassembly.txt Edit (958 bytes, text/plain; charset="utf-8")
DpkgLog.txt Edit (554.6 KiB, text/plain; charset="utf-8")
GconfCompiz.txt Edit (43.3 KiB, text/plain; charset="utf-8")
Lspci.txt Edit (36.6 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (528 bytes, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (1.3 KiB, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (1.7 KiB, text/plain; charset="utf-8")
ProcMaps.txt Edit (21.9 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (4.6 KiB, text/plain; charset="utf-8")
ProcStatus.txt Edit (772 bytes, text/plain; charset="utf-8")
Registers.txt Edit (708 bytes, text/plain; charset="utf-8")
Stacktrace.txt Edit (35.9 KiB, text/plain; charset="utf-8")
ThreadStacktrace.txt Edit (35.9 KiB, text/plain; charset="utf-8")
UdevDb.txt Edit (123.8 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (285.7 KiB, text/plain; charset="utf-8")
UnitySupportTest.txt Edit (567 bytes, text/plain; charset="utf-8")
XorgConf.txt Edit (1.0 KiB, text/plain; charset="utf-8")
XorgLog.txt Edit (43.9 KiB, text/plain; charset="utf-8")
XorgLogOld.txt Edit (47.3 KiB, text/plain; charset="utf-8")
Xrandr.txt Edit (4.3 KiB, text/plain; charset="utf-8")
xdpyinfo.txt Edit (19.1 KiB, text/plain; charset="utf-8")
xserver.outputs.txt Edit (576 bytes, text/plain; charset="utf-8")

information type:	Private → Public
affects:	xorg-server (Ubuntu) → xserver-xorg-video-nouveau (Ubuntu)

Patrik Lundquist (patrik-lundquist) on 2013-04-08

tags:

added: nouveau

Patrik Lundquist (patrik-lundquist) on 2013-04-08

tags:	removed: need-amd64-retrace
summary:	- Xorg crashed with SIGABRT in memcpy() + Xorg crashed with SIGABRT in NVAccelMemcpyRect() on nouveau

Revision history for this message

elhoir (jfarroyo82) wrote on 2013-04-09:

Download full text (17.1 KiB)

hello,

hope this is the correct place to post this....

Right now my X Server is frozen. I have logged in remotely, and these are the Xorg.0.log contents:

hello,

hope this is the correct place to post this....

Right now my X Server is frozen. I have logged in remotely, and these are the Xorg.0.log contents:

[ 11826.207] (II) NOUVEAU(0): Modeline "1152x864"x0.0 108.00 1152 1216 1344 1600 864 865 868 900 +hsync +vsync (67.5 kHz e)
(EE) [mi] EQ overflowing. Additional events will be discarded until existing events are processed.
(EE)
(EE) Backtrace:
(EE) 0: /usr/bin/X (xorg_backtrace+0x36) [0x7fbd0da561c6]
(EE) 1: /usr/bin/X (mieqEnqueue+0x26b) [0x7fbd0da374db]
(EE) 2: /usr/bin/X (0x7fbd0d8a6000+0x6d3d2) [0x7fbd0d9133d2]
(EE) 3: /usr/lib/xorg/modules/input/evdev_drv.so (0x7fbd067d8000+0x5f44) [0x7fbd067ddf44]
(EE) 4: /usr/bin/X (0x7fbd0d8a6000+0x96887) [0x7fbd0d93c887]
(EE) 5: /usr/bin/X (0x7fbd0d8a6000+0xc0078) [0x7fbd0d966078]
(EE) 6: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fbd0c9a9000+0xfbd0) [0x7fbd0c9b8bd0]
(EE) 7: /lib/x86_64-linux-gnu/libc.so.6 (ioctl+0x7) [0x7fbd0b6c6747]
(EE) 8: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmIoctl+0x28) [0x7fbd0c7a1338]
(EE) 9: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmCommandWrite+0x1b) [0x7fbd0c7a36fb]
(EE) 10: /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 (nouveau_bo_wait+0x89) [0x7fbd0a0461d9]
(EE) 11: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0x7fbd0a24a000+0x718b) [0x7fbd0a25118b]
(EE) 12: /usr/lib/xorg/modules/libexa.so (0x7fbd093eb000+0xb650) [0x7fbd093f6650]
(EE) 13: /usr/bin/X (0x7fbd0d8a6000+0x1a0443) [0x7fbd0da46443]
(EE) 14: /usr/bin/X (0x7fbd0d8a6000+0xe5a60) [0x7fbd0d98ba60]
(EE) 15: /usr/bin/X (0x7fbd0d8a6000+0x55be1) [0x7fbd0d8fbbe1]
(EE) 16: /usr/bin/X (0x7fbd0d8a6000+0x58a21) [0x7fbd0d8fea21]
(EE) 17: /usr/bin/X (0x7fbd0d8a6000+0x474da) [0x7fbd0d8ed4da]
(EE) 18: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7fbd0b5f6ea5]
(EE) 19: /usr/bin/X (0x7fbd0d8a6000+0x47821) [0x7fbd0d8ed821]
(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/bin/X (xorg_backtrace+0x36) [0x7fbd0da561c6]
(EE) 1: /usr/bin/X (0x7fbd0d8a6000+0x6d3d2) [0x7fbd0d9133d2]
(EE) 2: /usr/lib/xorg/modules/input/evdev_drv.so (0x7fbd067d8000+0x5f44) [0x7fbd067ddf44]
(EE) 3: /usr/bin/X (0x7fbd0d8a6000+0x96887) [0x7fbd0d93c887]
(EE) 4: /usr/bin/X (0x7fbd0d8a6000+0xc0078) [0x7fbd0d966078]
(EE) 5: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fbd0c9a9000+0xfbd0) [0x7fbd0c9b8bd0]
(EE) 6: /lib/x86_64-linux-gnu/libc.so.6 (ioctl+0x7) [0x7fbd0b6c6747]
(EE) 7: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmIoctl+0x28) [0x7fbd0c7a1338]
(EE) 8: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmCommandWrite+0x1b) [0x7fbd0c7a36fb]
(EE) 9: /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 (nouveau_bo_wait+0x89) [0x7fbd0a0461d9]
(EE) 10: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0x7fbd0a24a000+0x718b) [0x7fbd0a25118b]
(EE) 11: /usr/lib/xorg/modules/libexa.so (0x7fbd093eb000+0xb650) [0x7fbd093f6650]
(EE) 12: /usr/bin/X (0x7fbd0d8a6000+0x1a0443) [0x7fbd0da46443]
(EE) 13: /usr/bin/X (0x7fbd0d8a6000+0xe5a60) [0x7fbd0d98ba60]
(EE) 14: /usr/bin/X (0x7fbd0d8a6000+0x55be1) [0x7fbd0d8fbbe1]
(EE) 15: /usr/bin/X (0x7fbd0d8a6000+0x58a21) [0x7fbd0d8fea21]
(EE) 16: /usr/bin/X (0x7fbd0d8a6000+0x474da) [0x7fbd0d8ed4da]
(EE) 17: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7fbd0b5f6ea5]
(EE) 18: /usr/bin/X (0x7fbd0d8a6000+0x47821) [0x7fbd0d8ed821]
(EE)
(EE) [mi] EQ overflow continuing. 200 events have been dropped.
(EE)
(EE) Backtrace:
(EE) 0: /usr/bin/X (xorg_backtrace+0x36) [0x7fbd0da561c6]
(EE) 1: /usr/bin/X (0x7fbd0d8a6000+0x6d3d2) [0x7fbd0d9133d2]
(EE) 2: /usr/lib/xorg/modules/input/evdev_drv.so (0x7fbd067d8000+0x5f44) [0x7fbd067ddf44]
(EE) 3: /usr/bin/X (0x7fbd0d8a6000+0x96887) [0x7fbd0d93c887]
(EE) 4: /usr/bin/X (0x7fbd0d8a6000+0xc0078) [0x7fbd0d966078]
(EE) 5: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fbd0c9a9000+0xfbd0) [0x7fbd0c9b8bd0]
(EE) 6: /lib/x86_64-linux-gnu/libc.so.6 (ioctl+0x7) [0x7fbd0b6c6747]
(EE) 7: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmIoctl+0x28) [0x7fbd0c7a1338]
(EE) 8: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmCommandWrite+0x1b) [0x7fbd0c7a36fb]
(EE) 9: /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 (nouveau_bo_wait+0x89) [0x7fbd0a0461d9]
(EE) 10: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0x7fbd0a24a000+0x718b) [0x7fbd0a25118b]
(EE) 11: /usr/lib/xorg/modules/libexa.so (0x7fbd093eb000+0xb650) [0x7fbd093f6650]
(EE) 12: /usr/bin/X (0x7fbd0d8a6000+0x1a0443) [0x7fbd0da46443]
(EE) 13: /usr/bin/X (0x7fbd0d8a6000+0xe5a60) [0x7fbd0d98ba60]
(EE) 14: /usr/bin/X (0x7fbd0d8a6000+0x55be1) [0x7fbd0d8fbbe1]
(EE) 15: /usr/bin/X (0x7fbd0d8a6000+0x58a21) [0x7fbd0d8fea21]
(EE) 16: /usr/bin/X (0x7fbd0d8a6000+0x474da) [0x7fbd0d8ed4da]
(EE) 17: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7fbd0b5f6ea5]
(EE) 18: /usr/bin/X (0x7fbd0d8a6000+0x47821) [0x7fbd0d8ed821]
(EE)
[ 16010.880] [mi] Increasing EQ size to 512 to prevent dropped events.
[ 16010.880] [mi] EQ processing has resumed after 285 dropped events.
[ 16010.880] [mi] This may be caused my a misbehaving driver monopolizing the server's resources.
(EE) [mi] EQ overflowing. Additional events will be discarded until existing events are processed.
(EE)
(EE) Backtrace:
(EE) 0: /usr/bin/X (xorg_backtrace+0x36) [0x7fbd0da561c6]
(EE) 1: /usr/bin/X (mieqEnqueue+0x26b) [0x7fbd0da374db]
(EE) 2: /usr/bin/X (0x7fbd0d8a6000+0x6d3d2) [0x7fbd0d9133d2]
(EE) 3: /usr/lib/xorg/modules/input/evdev_drv.so (0x7fbd067d8000+0x5f44) [0x7fbd067ddf44]
(EE) 4: /usr/bin/X (0x7fbd0d8a6000+0x96887) [0x7fbd0d93c887]
(EE) 5: /usr/bin/X (0x7fbd0d8a6000+0xc0078) [0x7fbd0d966078]
(EE) 6: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fbd0c9a9000+0xfbd0) [0x7fbd0c9b8bd0]
(EE) 7: /lib/x86_64-linux-gnu/libc.so.6 (ioctl+0x7) [0x7fbd0b6c6747]
(EE) 8: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmIoctl+0x28) [0x7fbd0c7a1338]
(EE) 9: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmCommandWrite+0x1b) [0x7fbd0c7a36fb]
(EE) 10: /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 (nouveau_bo_wait+0x89) [0x7fbd0a0461d9]
(EE) 11: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0x7fbd0a24a000+0x718b) [0x7fbd0a25118b]
(EE) 12: /usr/lib/xorg/modules/libexa.so (0x7fbd093eb000+0xb650) [0x7fbd093f6650]
(EE) 13: /usr/bin/X (0x7fbd0d8a6000+0x1a0443) [0x7fbd0da46443]
(EE) 14: /usr/bin/X (0x7fbd0d8a6000+0xe5a60) [0x7fbd0d98ba60]
(EE) 15: /usr/bin/X (0x7fbd0d8a6000+0x55be1) [0x7fbd0d8fbbe1]
(EE) 16: /usr/bin/X (0x7fbd0d8a6000+0x58a21) [0x7fbd0d8fea21]
(EE) 17: /usr/bin/X (0x7fbd0d8a6000+0x474da) [0x7fbd0d8ed4da]
(EE) 18: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7fbd0b5f6ea5]
(EE) 19: /usr/bin/X (0x7fbd0d8a6000+0x47821) [0x7fbd0d8ed821]
(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/bin/X (xorg_backtrace+0x36) [0x7fbd0da561c6]
(EE) 1: /usr/bin/X (0x7fbd0d8a6000+0x6d3d2) [0x7fbd0d9133d2]
(EE) 2: /usr/lib/xorg/modules/input/evdev_drv.so (0x7fbd067d8000+0x5f44) [0x7fbd067ddf44]
(EE) 3: /usr/bin/X (0x7fbd0d8a6000+0x96887) [0x7fbd0d93c887]
(EE) 4: /usr/bin/X (0x7fbd0d8a6000+0xc0078) [0x7fbd0d966078]
(EE) 5: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fbd0c9a9000+0xfbd0) [0x7fbd0c9b8bd0]
(EE) 6: /lib/x86_64-linux-gnu/libc.so.6 (ioctl+0x7) [0x7fbd0b6c6747]
(EE) 7: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmIoctl+0x28) [0x7fbd0c7a1338]
(EE) 8: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmCommandWrite+0x1b) [0x7fbd0c7a36fb]
(EE) 9: /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 (nouveau_bo_wait+0x89) [0x7fbd0a0461d9]
(EE) 10: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0x7fbd0a24a000+0x718b) [0x7fbd0a25118b]
(EE) 11: /usr/lib/xorg/modules/libexa.so (0x7fbd093eb000+0xb650) [0x7fbd093f6650]
(EE) 12: /usr/bin/X (0x7fbd0d8a6000+0x1a0443) [0x7fbd0da46443]
(EE) 13: /usr/bin/X (0x7fbd0d8a6000+0xe5a60) [0x7fbd0d98ba60]
(EE) 14: /usr/bin/X (0x7fbd0d8a6000+0x55be1) [0x7fbd0d8fbbe1]
(EE) 15: /usr/bin/X (0x7fbd0d8a6000+0x58a21) [0x7fbd0d8fea21]
(EE) 16: /usr/bin/X (0x7fbd0d8a6000+0x474da) [0x7fbd0d8ed4da]
(EE) 17: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7fbd0b5f6ea5]
(EE) 18: /usr/bin/X (0x7fbd0d8a6000+0x47821) [0x7fbd0d8ed821]
(EE)
(EE) [mi] EQ overflow continuing. 200 events have been dropped.
(EE)
(EE) Backtrace:
(EE) 0: /usr/bin/X (xorg_backtrace+0x36) [0x7fbd0da561c6]
(EE) 1: /usr/bin/X (0x7fbd0d8a6000+0x6d3d2) [0x7fbd0d9133d2]
(EE) 2: /usr/lib/xorg/modules/input/evdev_drv.so (0x7fbd067d8000+0x5f44) [0x7fbd067ddf44]
(EE) 3: /usr/bin/X (0x7fbd0d8a6000+0x96887) [0x7fbd0d93c887]
(EE) 4: /usr/bin/X (0x7fbd0d8a6000+0xc0078) [0x7fbd0d966078]
(EE) 5: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fbd0c9a9000+0xfbd0) [0x7fbd0c9b8bd0]
(EE) 6: /lib/x86_64-linux-gnu/libc.so.6 (ioctl+0x7) [0x7fbd0b6c6747]
(EE) 7: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmIoctl+0x28) [0x7fbd0c7a1338]
(EE) 8: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmCommandWrite+0x1b) [0x7fbd0c7a36fb]
(EE) 9: /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 (nouveau_bo_wait+0x89) [0x7fbd0a0461d9]
(EE) 10: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0x7fbd0a24a000+0x718b) [0x7fbd0a25118b]
(EE) 11: /usr/lib/xorg/modules/libexa.so (0x7fbd093eb000+0xb650) [0x7fbd093f6650]
(EE) 12: /usr/bin/X (0x7fbd0d8a6000+0x1a0443) [0x7fbd0da46443]
(EE) 13: /usr/bin/X (0x7fbd0d8a6000+0xe5a60) [0x7fbd0d98ba60]
(EE) 14: /usr/bin/X (0x7fbd0d8a6000+0x55be1) [0x7fbd0d8fbbe1]
(EE) 15: /usr/bin/X (0x7fbd0d8a6000+0x58a21) [0x7fbd0d8fea21]
(EE) 16: /usr/bin/X (0x7fbd0d8a6000+0x474da) [0x7fbd0d8ed4da]
(EE) 17: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7fbd0b5f6ea5]
(EE) 18: /usr/bin/X (0x7fbd0d8a6000+0x47821) [0x7fbd0d8ed821]
(EE)
(EE) [mi] EQ overflow continuing. 300 events have been dropped.
(EE)
(EE) Backtrace:
(EE) 0: /usr/bin/X (xorg_backtrace+0x36) [0x7fbd0da561c6]
(EE) 1: /usr/bin/X (0x7fbd0d8a6000+0x6d3d2) [0x7fbd0d9133d2]
(EE) 2: /usr/lib/xorg/modules/input/evdev_drv.so (0x7fbd067d8000+0x5f44) [0x7fbd067ddf44]
(EE) 3: /usr/bin/X (0x7fbd0d8a6000+0x96887) [0x7fbd0d93c887]
(EE) 4: /usr/bin/X (0x7fbd0d8a6000+0xc0078) [0x7fbd0d966078]
(EE) 5: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fbd0c9a9000+0xfbd0) [0x7fbd0c9b8bd0]
(EE) 6: /lib/x86_64-linux-gnu/libc.so.6 (ioctl+0x7) [0x7fbd0b6c6747]
(EE) 7: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmIoctl+0x28) [0x7fbd0c7a1338]
(EE) 8: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmCommandWrite+0x1b) [0x7fbd0c7a36fb]
(EE) 9: /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 (nouveau_bo_wait+0x89) [0x7fbd0a0461d9]
(EE) 10: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0x7fbd0a24a000+0x718b) [0x7fbd0a25118b]
(EE) 11: /usr/lib/xorg/modules/libexa.so (0x7fbd093eb000+0xb650) [0x7fbd093f6650]
(EE) 12: /usr/bin/X (0x7fbd0d8a6000+0x1a0443) [0x7fbd0da46443]
(EE) 13: /usr/bin/X (0x7fbd0d8a6000+0xe5a60) [0x7fbd0d98ba60]
(EE) 14: /usr/bin/X (0x7fbd0d8a6000+0x55be1) [0x7fbd0d8fbbe1]
(EE) 15: /usr/bin/X (0x7fbd0d8a6000+0x58a21) [0x7fbd0d8fea21]
(EE) 16: /usr/bin/X (0x7fbd0d8a6000+0x474da) [0x7fbd0d8ed4da]
(EE) 17: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7fbd0b5f6ea5]
(EE) 18: /usr/bin/X (0x7fbd0d8a6000+0x47821) [0x7fbd0d8ed821]
(EE)
(EE) [mi] EQ overflow continuing. 400 events have been dropped.
(EE)
(EE) Backtrace:
(EE) 0: /usr/bin/X (xorg_backtrace+0x36) [0x7fbd0da561c6]
(EE) 1: /usr/bin/X (0x7fbd0d8a6000+0x6d3d2) [0x7fbd0d9133d2]
(EE) 2: /usr/lib/xorg/modules/input/evdev_drv.so (0x7fbd067d8000+0x5f44) [0x7fbd067ddf44]
(EE) 3: /usr/bin/X (0x7fbd0d8a6000+0x96887) [0x7fbd0d93c887]
(EE) 4: /usr/bin/X (0x7fbd0d8a6000+0xc0078) [0x7fbd0d966078]
(EE) 5: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fbd0c9a9000+0xfbd0) [0x7fbd0c9b8bd0]
(EE) 6: /lib/x86_64-linux-gnu/libc.so.6 (ioctl+0x7) [0x7fbd0b6c6747]
(EE) 7: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmIoctl+0x28) [0x7fbd0c7a1338]
(EE) 8: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmCommandWrite+0x1b) [0x7fbd0c7a36fb]
(EE) 9: /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 (nouveau_bo_wait+0x89) [0x7fbd0a0461d9]
(EE) 10: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0x7fbd0a24a000+0x718b) [0x7fbd0a25118b]
(EE) 11: /usr/lib/xorg/modules/libexa.so (0x7fbd093eb000+0xb650) [0x7fbd093f6650]
(EE) 12: /usr/bin/X (0x7fbd0d8a6000+0x1a0443) [0x7fbd0da46443]
(EE) 13: /usr/bin/X (0x7fbd0d8a6000+0xe5a60) [0x7fbd0d98ba60]
(EE) 14: /usr/bin/X (0x7fbd0d8a6000+0x55be1) [0x7fbd0d8fbbe1]
(EE) 15: /usr/bin/X (0x7fbd0d8a6000+0x58a21) [0x7fbd0d8fea21]
(EE) 16: /usr/bin/X (0x7fbd0d8a6000+0x474da) [0x7fbd0d8ed4da]
(EE) 17: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7fbd0b5f6ea5]
(EE) 18: /usr/bin/X (0x7fbd0d8a6000+0x47821) [0x7fbd0d8ed821]
(EE)
(EE) [mi] EQ overflow continuing. 500 events have been dropped.
(EE)
(EE) Backtrace:
(EE) 0: /usr/bin/X (xorg_backtrace+0x36) [0x7fbd0da561c6]
(EE) 1: /usr/bin/X (0x7fbd0d8a6000+0x6d3d2) [0x7fbd0d9133d2]
(EE) 2: /usr/lib/xorg/modules/input/evdev_drv.so (0x7fbd067d8000+0x5f44) [0x7fbd067ddf44]
(EE) 3: /usr/bin/X (0x7fbd0d8a6000+0x96887) [0x7fbd0d93c887]
(EE) 4: /usr/bin/X (0x7fbd0d8a6000+0xc0078) [0x7fbd0d966078]
(EE) 5: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fbd0c9a9000+0xfbd0) [0x7fbd0c9b8bd0]
(EE) 6: /lib/x86_64-linux-gnu/libc.so.6 (ioctl+0x7) [0x7fbd0b6c6747]
(EE) 7: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmIoctl+0x28) [0x7fbd0c7a1338]
(EE) 8: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmCommandWrite+0x1b) [0x7fbd0c7a36fb]
(EE) 9: /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 (nouveau_bo_wait+0x89) [0x7fbd0a0461d9]
(EE) 10: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0x7fbd0a24a000+0x718b) [0x7fbd0a25118b]
(EE) 11: /usr/lib/xorg/modules/libexa.so (0x7fbd093eb000+0xb650) [0x7fbd093f6650]
(EE) 12: /usr/bin/X (0x7fbd0d8a6000+0x1a0443) [0x7fbd0da46443]
(EE) 13: /usr/bin/X (0x7fbd0d8a6000+0xe5a60) [0x7fbd0d98ba60]
(EE) 14: /usr/bin/X (0x7fbd0d8a6000+0x55be1) [0x7fbd0d8fbbe1]
(EE) 15: /usr/bin/X (0x7fbd0d8a6000+0x58a21) [0x7fbd0d8fea21]
(EE) 16: /usr/bin/X (0x7fbd0d8a6000+0x474da) [0x7fbd0d8ed4da]
(EE) 17: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7fbd0b5f6ea5]
(EE) 18: /usr/bin/X (0x7fbd0d8a6000+0x47821) [0x7fbd0d8ed821]
(EE)
(EE) [mi] EQ overflow continuing. 600 events have been dropped.
(EE)
(EE) Backtrace:
(EE) 0: /usr/bin/X (xorg_backtrace+0x36) [0x7fbd0da561c6]
(EE) 1: /usr/bin/X (0x7fbd0d8a6000+0x6d3d2) [0x7fbd0d9133d2]
(EE) 2: /usr/lib/xorg/modules/input/evdev_drv.so (0x7fbd067d8000+0x5f44) [0x7fbd067ddf44]
(EE) 3: /usr/bin/X (0x7fbd0d8a6000+0x96887) [0x7fbd0d93c887]
(EE) 4: /usr/bin/X (0x7fbd0d8a6000+0xc0078) [0x7fbd0d966078]
(EE) 5: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fbd0c9a9000+0xfbd0) [0x7fbd0c9b8bd0]
(EE) 6: /lib/x86_64-linux-gnu/libc.so.6 (ioctl+0x7) [0x7fbd0b6c6747]
(EE) 7: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmIoctl+0x28) [0x7fbd0c7a1338]
(EE) 8: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmCommandWrite+0x1b) [0x7fbd0c7a36fb]
(EE) 9: /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 (nouveau_bo_wait+0x89) [0x7fbd0a0461d9]
(EE) 10: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0x7fbd0a24a000+0x718b) [0x7fbd0a25118b]
(EE) 11: /usr/lib/xorg/modules/libexa.so (0x7fbd093eb000+0xb650) [0x7fbd093f6650]
(EE) 12: /usr/bin/X (0x7fbd0d8a6000+0x1a0443) [0x7fbd0da46443]
(EE) 13: /usr/bin/X (0x7fbd0d8a6000+0xe5a60) [0x7fbd0d98ba60]
(EE) 14: /usr/bin/X (0x7fbd0d8a6000+0x55be1) [0x7fbd0d8fbbe1]
(EE) 15: /usr/bin/X (0x7fbd0d8a6000+0x58a21) [0x7fbd0d8fea21]
(EE) 16: /usr/bin/X (0x7fbd0d8a6000+0x474da) [0x7fbd0d8ed4da]
(EE) 17: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7fbd0b5f6ea5]
(EE) 18: /usr/bin/X (0x7fbd0d8a6000+0x47821) [0x7fbd0d8ed821]
(EE)
(EE) [mi] EQ overflow continuing. 700 events have been dropped.
(EE)
(EE) Backtrace:
(EE) 0: /usr/bin/X (xorg_backtrace+0x36) [0x7fbd0da561c6]
(EE) 1: /usr/bin/X (0x7fbd0d8a6000+0x6d3d2) [0x7fbd0d9133d2]
(EE) 2: /usr/lib/xorg/modules/input/evdev_drv.so (0x7fbd067d8000+0x5f44) [0x7fbd067ddf44]
(EE) 3: /usr/bin/X (0x7fbd0d8a6000+0x96887) [0x7fbd0d93c887]
(EE) 4: /usr/bin/X (0x7fbd0d8a6000+0xc0078) [0x7fbd0d966078]
(EE) 5: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fbd0c9a9000+0xfbd0) [0x7fbd0c9b8bd0]
(EE) 6: /lib/x86_64-linux-gnu/libc.so.6 (ioctl+0x7) [0x7fbd0b6c6747]
(EE) 7: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmIoctl+0x28) [0x7fbd0c7a1338]
(EE) 8: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmCommandWrite+0x1b) [0x7fbd0c7a36fb]
(EE) 9: /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 (nouveau_bo_wait+0x89) [0x7fbd0a0461d9]
(EE) 10: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0x7fbd0a24a000+0x718b) [0x7fbd0a25118b]
(EE) 11: /usr/lib/xorg/modules/libexa.so (0x7fbd093eb000+0xb650) [0x7fbd093f6650]
(EE) 12: /usr/bin/X (0x7fbd0d8a6000+0x1a0443) [0x7fbd0da46443]
(EE) 13: /usr/bin/X (0x7fbd0d8a6000+0xe5a60) [0x7fbd0d98ba60]
(EE) 14: /usr/bin/X (0x7fbd0d8a6000+0x55be1) [0x7fbd0d8fbbe1]
(EE) 15: /usr/bin/X (0x7fbd0d8a6000+0x58a21) [0x7fbd0d8fea21]
(EE) 16: /usr/bin/X (0x7fbd0d8a6000+0x474da) [0x7fbd0d8ed4da]
(EE) 17: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7fbd0b5f6ea5]
(EE) 18: /usr/bin/X (0x7fbd0d8a6000+0x47821) [0x7fbd0d8ed821]
(EE)
[ 16025.976] [mi] Increasing EQ size to 1024 to prevent dropped events.
[ 16025.976] [mi] EQ processing has resumed after 797 dropped events.
[ 16025.976] [mi] This may be caused my a misbehaving driver monopolizing the server's resources.
elhoir@elhoir-desktop:/var/log$

(also posted at https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/1033533 )

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Ubuntuxserver-xorg-video-nouveau package