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.
** Package changed: linux-lts-trusty (Ubuntu) => xorg (Ubuntu)
** Changed in: xorg (Ubuntu)
Importance: Undecided => Low
** Changed in: xorg (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1391652
Title:
30 sec Xorg freeze - ACPI Warning: \_SB_.PCI0.PEG0.PEGP._DSM: Argument
#4 type mismatch - Found [Buffer], ACPI requires [Package]
(20131115/nsarguments-95)
Status in xorg package in Ubuntu:
Incomplete
Bug description:
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
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