Unpluging external screen, in a dual screen setup, causes X to lock up

[Anmar Oueja]

Binary package hint: xserver-xorg-video-intel

I have a ThinkPad X201 with Arrandale graphics. When I plug in an external screen via the docking station DisplayPort or directly to the laptop (undocked) via the VGA port, I can manage my dual screen with no issues at all with one exception. If I either unplug the external screen or if I go to gnome-display-properties tool and turn off the laptop screen. If I do that, the laptop screen goes black and flickers (looks like X is trying to recover or something) but nothing happens. After 20 or so seconds, the system locks up completely.

Please note that this was happening since Alpha 2 of Maverick but I chose to wait thinking the latest Xorg release will fix this. I would like to note that this problem does NOT happen with Lucid so it is an Intel driver regression.

I am happy to provide any level of help or information you need to fix this issue

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: xserver-xorg-video-intel 2:2.12.0-1ubuntu3
ProcVersionSignature: Ubuntu 2.6.35-16.22-generic 2.6.35.2
Uname: Linux 2.6.35-16-generic x86_64
Architecture: amd64
DRM.card0.DisplayPort.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.HDMI_Type_A.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1920x1200 1680x1050 1280x1024 1280x1024 1440x900 1280x960 1152x864 1024x768 1024x768 1024x768 832x624 800x600 800x600 800x600 800x600 640x480 640x480 640x480 640x480 720x400
 edid-base64: AP///////wAEaaQmbFoBADMTAQOANyJ4KsvQo1pJoCQTUFS/7wBxTwEBgUCBgJUAswABAQEBKDyAoHCwI0AwIDYAJlQhAAAaAAAA/wA5Q0xNVEYwODg2ODQKAAAA/QAySx5VEQAKICAgICAgAAAA/ABBU1VTIFZXMjY2SAogAFA=
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1280x800
 edid-base64: AP///////wAwrhFAAAAAAAATAQOAGhB46rqVl1lVjCchUFQAAAABAQEBAQEBAQEBAQEBAQEBEhsAgFAgFDAYIEQABaMQAAAfkxYAgFAgFDAYIEQABaMQAAAfAAAADwCBCjyBCjIWCQAw5PABAAAA/gBMUDEyMVdYMy1UTEMxAKw=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
Date: Sun Aug 22 15:57:32 2010
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Alpha amd64 (20100710)
MachineType: LENOVO 32492HU
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-16-generic root=UUID=3986a28a-0b33-43d4-bf6c-ab7be1e9ab62 ro quiet splash
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_CA.utf8
 SHELL=/bin/bash
SourcePackage: xserver-xorg-video-intel
dmi.bios.date: 06/07/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 6QET46WW (1.16 )
dmi.board.name: 32492HU
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr6QET46WW(1.16):bd06/07/2010:svnLENOVO:pn32492HU:pvrThinkPadX201:rvnLENOVO:rn32492HU:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 32492HU
dmi.product.version: ThinkPad X201
dmi.sys.vendor: LENOVO
glxinfo: Error: [Errno 2] No such file or directory
system:
 distro: Ubuntu
 codename: maverick
 architecture: x86_64
 kernel: 2.6.35-16-generic

[Anmar Oueja (anmar)]

BTW, this happens regardless if I am using Compiz, Unity or not.

[Anmar Oueja (anmar)]

More kernel logs I collected after I got a similar lock up here: LP #625482

[madbiologist (me-again)]

Does the just released Maverick kernel (linux 2.6.35-22.32) solve this? It contains the following fix:

* (pre-stable) drm/i915: don't enable self-refresh on Ironlake
    - LP: #629711

It sounds like you have a duplicate of bug #629711.

[Thomas Uehlinger (thomas-uehlinger)]

@madbiologist: Indeed, the new Maverick kernel (linux 2.6.35-22.32) fixes the problem for me (X201 i5).

[Anmar Oueja (anmar)]

I am still having problems related to the displayport that is found on my Ultrabase 200 docking station. Give me a couple more day to figure out the hangup I am experiencing.

[Launchpad Janitor (janitor)]

[Expired for xserver-xorg-video-intel (Ubuntu) because there has been no activity for 60 days.]