Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.6 kernel[0].
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'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc6-wily/ ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1575071 Title: Graphics corruption (framebuffer offset) in i915 on 4.4.0 Status in linux package in Ubuntu: Incomplete Bug description: Appeared after upgrading to 16.04 LTS. Mostly happens with switching channels in a full-screen irssi window by using Alt and the number keys (or the top row of the keyboard). Entire screen flickers between normal view, and a semi-arbitary offset view (with the entire screen offset by about 50-100 pixel, wrapping to the other side). Minor irritation to begin with. Eventually lead to the entire screen blanking save for a solid yellow/green line (about 5-10 px wide) on the left, occasionally (~1s) flicking back to the correct contents. Rebooting into 4.2.0 (left over from before the upgrade) appears to have fixed the issue. Hardware: Toshiba Portege z20t - "VGA compatible controller [0300]: Intel Corporation Broadwell-U Integrated Graphics [8086:161e] (rev 09) (prog-if 00 [VGA controller])" Relevant packages (assuming that they weren't captured): - linux-image-4.4.0-21-generic - linux-image-extra-4.4.0-21-generic - (working version is 4.2.0-35) ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-extra-4.4.0-21-generic 4.4.0-21.37 ProcVersionSignature: Ubuntu 4.2.0-35.40-generic 4.2.8-ckt5 Uname: Linux 4.2.0-35-generic x86_64 ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: tpg 2401 F.... pulseaudio /dev/snd/controlC0: tpg 2401 F.... pulseaudio CurrentDesktop: Unity Date: Tue Apr 26 17:08:04 2016 HibernationDevice: RESUME=UUID=ab95a533-52f3-4458-96dc-9119684b0ed6 InstallationDate: Installed on 2015-06-19 (312 days ago) InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1) MachineType: TOSHIBA PORTEGE Z20t-B ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-35-generic root=UUID=b6cc139d-95e4-48f1-a3a8-284dbdb3b6fa ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.2.0-35-generic N/A linux-backports-modules-4.2.0-35-generic N/A linux-firmware 1.157 SourcePackage: linux UpgradeStatus: Upgraded to xenial on 2016-04-25 (1 days ago) dmi.bios.date: 01/06/2015 dmi.bios.vendor: TOSHIBA dmi.bios.version: Version 1.60 dmi.board.asset.tag: 0000000000 dmi.board.name: PORTEGE Z20t-B dmi.board.vendor: TOSHIBA dmi.board.version: Version A0 dmi.chassis.asset.tag: 0000000000 dmi.chassis.type: 10 dmi.chassis.vendor: TOSHIBA dmi.chassis.version: Version 1.0 dmi.modalias: dmi:bvnTOSHIBA:bvrVersion1.60:bd01/06/2015:svnTOSHIBA:pnPORTEGEZ20t-B:pvrPT15BA-00500Y:rvnTOSHIBA:rnPORTEGEZ20t-B:rvrVersionA0:cvnTOSHIBA:ct10:cvrVersion1.0: dmi.product.name: PORTEGE Z20t-B dmi.product.version: PT15BA-00500Y dmi.sys.vendor: TOSHIBA To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1575071/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
