Karolis, if the problem was reproducible in a live environment, then
yes.
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https://bugs.launchpad.net/bugs/985949
Title:
Purple line appears on the external monitor after it is turned off and
back on
Status in The Linux Kernel:
Fix Released
Status in “linux” package in Ubuntu:
Incomplete
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-3.2.0-23-generic 3.2.0-23.36
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
NonfreeKernelModules: wl
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu5
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: karolis 14155 F.... pulseaudio
/dev/snd/controlC1: karolis 14155 F.... pulseaudio
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:83847616,1028020a,00100201
HDA:10951392,1028020a,00100000'
Controls : 33
Simple ctrls : 19
Card1.Amixer.info:
Card hw:1 'Headset'/'Logitech Logitech USB Headset at usb-0000:00:1d.7-1.4,
full speed'
Mixer name : 'USB Mixer'
Components : 'USB046d:0a0b'
Controls : 6
Simple ctrls : 2
Date: Fri Apr 20 00:19:10 2012
HibernationDevice: RESUME=UUID=4626d6a9-26ae-4151-9855-e85315830484
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MachineType: Dell Inc. XPS M1330
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-23-generic
root=UUID=e2c1bf72-7985-458c-af54-83144d4687d0 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.2.0-23-generic N/A
linux-backports-modules-3.2.0-23-generic N/A
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.:bvrA15:bd12/26/2008:svnDellInc.:pnXPSM1330:pvr:rvnDellInc.:rn0N6705:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: XPS M1330
dmi.sys.vendor: Dell Inc.
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