Purple line appears on the external monitor after it is turned off and back on
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Linux |
Fix Released
|
Medium
|
|||
linux (Ubuntu) |
Incomplete
|
Medium
|
Unassigned |
Bug Description
I have an external LED monitor connected to my laptop via HDMI. When I first log in everything seems to be fine, but when the monitor turns off due to inactivity and then turns back on, I see 2 pixel wide purple line on the left side (photo attached).
I got the same issue when I tried upgrading kernel to 3.2 in Ubuntu 11.10
The same happens in Unity 2D and 3D, so I don't think it's a Unity problem. It's probably either kernel or intel driver.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-
ProcVersionSign
Uname: Linux 3.2.0-23-generic x86_64
NonfreeKernelMo
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu5
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf6dfc000 irq 46'
Mixer name : 'Silicon Image SiI1392 HDMI'
Components : 'HDA:83847616,
Controls : 33
Simple ctrls : 19
Card1.Amixer.info:
Card hw:1 'Headset'/'Logitech Logitech USB Headset at usb-0000:
Mixer name : 'USB Mixer'
Components : 'USB046d:0a0b'
Controls : 6
Simple ctrls : 2
Date: Fri Apr 20 00:19:10 2012
HibernationDevice: RESUME=
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MachineType: Dell Inc. XPS M1330
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.79
SourcePackage: linux
UpgradeStatus: Upgraded to precise on 2012-04-13 (6 days ago)
dmi.bios.date: 12/26/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A15
dmi.board.name: 0N6705
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.
dmi.product.name: XPS M1330
dmi.sys.vendor: Dell Inc.
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
Changed in linux: | |
importance: | Unknown → Medium |
status: | Unknown → Confirmed |
Changed in linux: | |
status: | Confirmed → Incomplete |
Changed in linux: | |
status: | Incomplete → In Progress |
Changed in linux: | |
status: | In Progress → Incomplete |
Changed in linux: | |
status: | Incomplete → Fix Released |
tags: |
added: bios-outdated-a15 needs-upstream-testing regression-potential removed: artefact external monitor purple |
Would it be possible for you to test the latest upstream kernel? Refer to https:/ /wiki.ubuntu. com/KernelMainl ineBuilds . Please test the latest v3.4kernel[1] (Not a kernel in the daily directory). Once you've tested the upstream kernel, please remove the 'needs- upstream- testing' tag(Only that one tag, please leave the other tags). This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs- upstream- testing' text.
If this bug is fixed in the mainline kernel, please add the following tag 'kernel- fixed-upstream' .
If the mainline kernel does not fix this bug, please add the tag: 'kernel- bug-exists- upstream' .
If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel- unable- to-test- upstream' .
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".
Thanks in advance.
http:// kernel. ubuntu. com/~kernel- ppa/mainline/ v3.4-rc3- precise/