Kernel hangs while booting if there is a monitor connected to DP2
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
High
|
Unassigned |
Bug Description
I'm trying triple monitor configuration on HD4000:
- 1650x1050 on VGA1
- 1920x1080 on DP2
- 1920x1080 on DP3
Kernel hangs on boot if there is a monitor attached to DP2.
If I attach monitor after boot, changing resolution on DP2 one CPU core becomes 100% busy with continuous errors:
[drm:intel_
[drm:intel_
[drm:intel_
BTW, Same triple monitor configuration works fine in Windows 7 so I assume that hardware is ok.
Please advise what can be done next?
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-
ProcVersionSign
Uname: Linux 3.5.0-25-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.25.
AplayDevices: Error: [Errno 2] No such file or directory
ApportVersion: 2.0.1-0ubuntu17.1
Architecture: i386
ArecordDevices: Error: [Errno 2] No such file or directory
AudioDevicesInUse: Error: [Errno 2] No such file or directory
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Card0.Amixer.info: Error: [Errno 2] No such file or directory
Card0.Amixer.
Date: Mon Feb 6 15:34:43 2012
IwConfig: Error: [Errno 2] No such file or directory
Lspci: Error: [Errno 2] No such file or directory
MachineType: ICP/iEi B207
MarkForUpload: True
PciMultimedia:
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.79.2
RfKill: Error: [Errno 2] No such file or directory
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/10/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.
dmi.board.name: B207
dmi.board.vendor: ICP/iEi
dmi.board.version: V1.0
dmi.chassis.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.
dmi.modalias: dmi:bvnAmerican
dmi.product.name: B207
dmi.product.
dmi.sys.vendor: ICP/iEi
tags: | added: apport-collected |
description: | updated |
description: | updated |
tags: |
added: cherry-pick kernel-bug-exists-upstream-v3.9-rc2 needs-upstream-testing removed: kernel-bug-exists-upstream |
This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:
apport-collect 1153627
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.