Lenovo X220 becoming unresponsive when popping out of docking station
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Expired
|
Undecided
|
Unassigned |
Bug Description
## Issue
- Popping the laptop out of the docking station results in the machine
becoming unresponsive and the screen corruption.
- "[drm:pch_
/var/log/syslog when T520 or x220 is removed from docking station
## Environment
- Natty 11.04 i386
- Lenovo x220 or T520 (Sandy Bridge)
- Laptop booted while in docking station with external monitor attached
- Machine removed from docking station
## Resolution
- There appears to be a fix for this upstream:
## Diagnostic Steps
- Boot X220 or T520 under 2.6.38-8 while in a docking station with monitor
attached
- Once logged into the GUI, pop the machine out of the docking station
- The screen blinks as if it's detecting new monitor configuration, but then
either goes blank or becomes correupted (tiled background is the usual
effect)
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-
ProcVersionSign
Uname: Linux 2.6.38-8-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: CONEXANT Analog [CONEXANT Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
CRDA: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden
Card0.Amixer.info:
Card hw:0 'PCH'/'HDA Intel PCH at 0xf2620000 irq 45'
Mixer name : 'Intel CougarPoint HDMI'
Components : 'HDA:14f1506e,
Controls : 20
Simple ctrls : 8
Card29.Amixer.info:
Card hw:29 'ThinkPadEC'
Mixer name : 'ThinkPad EC (unknown)'
Components : ''
Controls : 1
Simple ctrls : 1
Card29.
Simple mixer control 'Console',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Date: Fri Jun 10 09:32:32 2011
HibernationDevice: RESUME=
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
MachineType: LENOVO 42433RG
ProcEnviron:
LANGUAGE=de_DE:en
LANG=de_DE.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.52
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/13/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 8AET45WW (1.25 )
dmi.board.
dmi.board.name: 42433RG
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 42433RG
dmi.product.
dmi.sys.vendor: LENOVO
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
I notice that changing to other X Terminal Ctrl-Alt-F8 and then back to Ctrl-Alt-F7 (can sometimes) bring X back. Sometimes not, then I restart service gdm. Sometimes machines completely crashes.