XOrg freezes for about 30 seconds and this warning is printed in the syslog:
kernel: [ 752.250482] ACPI Warning: \_SB_.PCI0.PEG0.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20131115/nsarguments-95)
kernel: [ 752.250740] ACPI Warning: \_SB_.PCI0.PEG0.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20131115/nsarguments-95)
However, the console still works while X is frozen.
This is a Dell XPS L702X with optimus graphics.
The freeze appears to occur randomly.
Using nautilus, gedit or other gtk3-programs seems to cause it happen more frequently. Eclipse and Chromium that uses gtk2 does not seem to trigger the bug.
There are two similar bugs:
https://bugs.launchpad.net/ubuntu/+source/linux-lts-trusty/+bug/1362532
https://bugs.launchpad.net/ubuntu/+source/linux-lts-saucy/+bug/1281966
3.13.0-39-generic x86_64
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller])
Subsystem: Dell Device 04b8
Flags: bus master, fast devsel, latency 0, IRQ 52
Memory at f2400000 (64-bit, non-prefetchable) [size=4M]
Memory at e0000000 (64-bit, prefetchable) [size=256M]
I/O ports at 5000 [size=64]
Expansion ROM at <unassigned> [disabled]
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [a4] PCI Advanced Features
Kernel driver in use: i915
01:00.0 VGA compatible controller: NVIDIA Corporation GF106M [GeForce GT 550M] (rev a1) (prog-if 00 [VGA controller])
Subsystem: Dell Device 04b8
Flags: bus master, fast devsel, latency 0, IRQ 51
Memory at f0000000 (32-bit, non-prefetchable) [size=32M]
Memory at c0000000 (64-bit, prefetchable) [size=256M]
Memory at d0000000 (64-bit, prefetchable) [size=64M]
I/O ports at 4000 [size=128]
Expansion ROM at f2000000 [disabled] [size=512K]
Capabilities: [60] Power Management version 3
Capabilities: [68] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [78] Express Endpoint, MSI 00
Capabilities: [b4] Vendor Specific Information: Len=14 <?>
Capabilities: [100] Virtual Channel
Capabilities: [128] Power Budgeting <?>
Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?>
Kernel driver in use: nouveau
LSB Version: core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch:core-4.1-amd64:core-4.1-noarch:security-4.0-amd64:security-4.0-noarch:security-4.1-amd64:security-4.1-noarch
Distributor ID: Ubuntu
Description: Ubuntu 14.04.1 LTS
Release: 14.04
Codename: trusty
---
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: GNOME
DistUpgraded: Fresh install
DistroCodename: trusty
DistroRelease: Ubuntu 14.04
DistroVariant: ubuntu
DkmsStatus: virtualbox, 4.3.10, 3.13.0-39-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Dell Device [1028:04b8]
NVIDIA Corporation GF106M [GeForce GT 550M] [10de:0dd6] (rev a1) (prog-if 00 [VGA controller])
Subsystem: Dell Device [1028:04b8]
InstallationDate: Installed on 2014-03-06 (268 days ago)
InstallationMedia: Ubuntu-GNOME 14.04 "Trusty Tahr" - Alpha amd64 (20140226)
MachineType: Dell Inc. Dell System XPS L702X
Package: xorg 1:7.7+1ubuntu8
PackageArchitecture: amd64
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-40-generic root=/dev/mapper/ubuntu--gnome--vg-root ro quiet splash intel_pstate=enable vt.handoff=7
ProcVersionSignature: Ubuntu 3.13.0-40.69-generic 3.13.11.10
Tags: trusty ubuntu
Uname: Linux 3.13.0-40-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dialout dip lpadmin netdev plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 07/22/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A12
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 0K4H3G
dmi.board.vendor: Dell Inc.
dmi.board.version: FAB1
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnDellInc.:bvrA12:bd07/22/2011:svnDellInc.:pnDellSystemXPSL702X:pvr:rvnDellInc.:rn0K4H3G:rvrFAB1:cvnDellInc.:ct8:cvr0.1:
dmi.product.name: Dell System XPS L702X
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.11.2+14.04.20140714-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.2
version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1.3
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Sat Nov 29 21:57:21 2014
xserver.configfile: default
xserver.devices:
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
xserver.version: 2:1.15.1-0ubuntu2.1
Jens Askengren, thank you for reporting this and helping make Ubuntu better. Could you please execute the following in a terminal as it will automatically gather and attach updated debug information to this report:
apport-collect -p xorg 1391652
Please ensure you have xdiagnose installed, and that you click the Yes button for attaching additional debugging information.