You have been subscribed to a public bug: 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 ** Affects: xorg (Ubuntu) Importance: Low Status: Incomplete -- 30 sec Xorg freeze - ACPI Warning: \_SB_.PCI0.PEG0.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20131115/nsarguments-95) https://bugs.launchpad.net/bugs/1391652 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp