[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/963933
Title:
System freeze when hotplug 27" monitor in Ubuntu 12.04
Status in “linux” package in Ubuntu:
Expired
Bug description:
I'm not sure if this is a bug yet, hence the question.
I have a Dell XPS 17" laptop (1920x1080 resolution) and recently got a
new Dell 27" monitor (2560x1440 res). The laptop has an nVidia
discrete card, but I don't actually have it set up (i.e. I haven't got
around to successfully setting up Bumblebee yet), so I'm assuming this
is all on the Intel card. The external monitor is connected via a Mini
Display Port to Dual-Link DVI (the Apple branded one) adapter, then
via DVI cable to the monitor (it's all I have around that works).
If I boot the laptop with the external monitor connected, everything
works perfectly (except the login screen goes very low res, but I can
live with that). However, if I unplug it while connected, the display
will go black with the mouse cursor still visible, and completely lock
up. Caps lock does not go on/off, will not respond to SysRq,
Ctrl+Alt+Del, switching to a different terminal (Ctrl+Alt+F1 etc.).
Only a hard reboot will do the job.
The same happens in all these scenarios:
- Unplugging the monitor when booted with it connected
- "Hot" plugging the monitor after booted
- Hitting "Apply" after making changes in System Settings > Display (e.g. if
I try to move the monitor positions around)
It's not a show stopper for me, I just must be careful not to do the
above, which can be inconvenient sometimes.
I am not sure where to even start looking, /var/log/syslog does not
seem to contain any useful information, nor does /var/log/dmesg.0 or
/var/log/Xorg.0.log
If I boot from cold with the monitor attached, and avoid the Display
settings, everything works perfectly - correct resolution etc.
System details follow:
$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu precise (development branch)"
$ lspci | grep -i vga
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core
Processor Family Integrated Graphics Controller (rev 09)
01:00.0 VGA compatible controller: NVIDIA Corporation Device 124d (rev ff)
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu17.4
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC665 Analog [ALC665 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: james 3008 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'PCH'/'HDA Intel PCH at 0xf3c00000 irq 54'
Mixer name : 'Intel CougarPoint HDMI'
Components : 'HDA:10ec0665,10280571,00100003
HDA:80862805,80860101,00100000'
Controls : 32
Simple ctrls : 14
DistroRelease: Ubuntu 12.04
HibernationDevice: RESUME=UUID=1695b760-d45b-43f4-85b4-30adb573e7e6
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301)
MachineType: Dell Inc. Dell System XPS L702X
MarkForUpload: True
Package: linux (not installed)
ProcEnviron:
LANGUAGE=en_GB:en
TERM=xterm
PATH=(custom, no user)
LANG=en_GB.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-52-generic
root=UUID=5b277476-b8c0-4ed8-ba6b-4c5d717137e1 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.2.0-52.78-generic 3.2.48
RelatedPackageVersions:
linux-restricted-modules-3.2.0-52-generic N/A
linux-backports-modules-3.2.0-52-generic N/A
linux-firmware 1.79.6
StagingDrivers: mei
Tags: precise running-unity staging
Uname: Linux 3.2.0-52-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 01/10/2012
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A16
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 0XN71K
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.:bvrA16:bd01/10/2012:svnDellInc.:pnDellSystemXPSL702X:pvr:rvnDellInc.:rn0XN71K:rvrFAB1:cvnDellInc.:ct8:cvr0.1:
dmi.product.name: Dell System XPS L702X
dmi.sys.vendor: Dell Inc.
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