When changing to Ultra HD screen flickers
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
xserver-xorg-video-intel (Ubuntu) |
Expired
|
Low
|
Unassigned |
Bug Description
After changing from a lower resolution to 4k bottom left of the screen looks fine everything else flickers. When I restart X11 the whole screen looks perfect.
Seems like a problem with mode setting and/or MST?
I am using a lenovo thinkpad T440s with a dockingstation (but also seems to happen when not connection through the docking station).
ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: xserver-
ProcVersionSign
Uname: Linux 4.1.0-3-generic x86_64
.tmp.unity.
ApportVersion: 2.18-0ubuntu9
Architecture: amd64
CompizPlugins: No value set for `/apps/
CompositorRunning: compiz
CompositorUnred
CompositorUnred
CurrentDesktop: Unity
Date: Fri Sep 4 19:04:49 2015
DistUpgraded: Fresh install
DistroCodename: wily
DistroVariant: ubuntu
ExtraDebuggingI
GraphicsCard:
Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device [17aa:220c]
InstallationDate: Installed on 2014-11-20 (288 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
MachineType: LENOVO 20AQS00500
ProcKernelCmdLine: BOOT_IMAGE=
SourcePackage: xserver-
SystemImageInfo:
current build number: 0
device name:
channel: daily
last update: 2015-07-01 14:58:02
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/20/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: GJET80WW (2.30 )
dmi.board.
dmi.board.name: 20AQS00500
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 20AQS00500
dmi.product.
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.12.
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.64-1
version.
version.
version.
version.
version.
version.
version.
version.
xserver.bootTime: Fri Sep 4 19:03:28 2015
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
product id 12350
vendor AUO
xserver.version: 2:1.17.2-1ubuntu5
Kai Mast, thank you for reporting this and helping make Ubuntu better. As per http:// support. lenovo. com/us/ en/products/ laptops- and-netbooks/ thinkpad- t-series- laptops/ thinkpad- t440s an update to your computer's buggy and outdated BIOS is available (2.34). If you update to this following https:/ /help.ubuntu. com/community/ BIOSUpdate does it change anything?
If it doesn't, could you please both specify what happened, and provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
For more on BIOS updates and linux, please see https:/ /help.ubuntu. com/community/ ReportingBugs# Bug_reporting_ etiquette .
Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. As well, you don't have to create a new bug report.
Once the BIOS is updated, if the problem is still reproducible, and the information above is provided, then please mark this report Status New. Otherwise, please mark this as Invalid.
Thank you for your understanding.