[Expired for linux (Ubuntu) because there has been no activity for 60 days.]
** Changed in: linux (Ubuntu) Status: Incomplete => Expired -- 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/1592923 Title: Display artificats when using external display with Ubuntu 16.04 on Lenovo X1 Carbon (Broadwell) Status in linux package in Ubuntu: Expired Status in linux source package in Xenial: Expired Bug description: After upgrading this laptop from 14.04 (LTS-Wily X & Kernel stack) to 16.04, I am no longer able to usefully use external displays. There are artifacts on both displays that get worse with mouse movement. Upgrading to a 4.7rc3 mainline kernel from the Ubuntu kernel PPA fixed the problem. (I'm using the mini-DP port on the laptop and have tried several different converters and monitors.) --- ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: helen 2118 F.... pulseaudio /dev/snd/controlC0: helen 2118 F.... pulseaudio CurrentDesktop: Unity DistroRelease: Ubuntu 16.04 EcryptfsInUse: Yes InstallationDate: Installed on 2016-04-22 (54 days ago) InstallationMedia: Ubuntu 14.04.4 LTS "Trusty Tahr" - Release amd64 (20160217.1) MachineType: LENOVO 20BS0061ZA Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-25-generic.efi.signed root=UUID=fc75b093-6f8c-4b7e-946c-71df6814ab6a ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 4.4.0-25.44-generic 4.4.13 RelatedPackageVersions: linux-restricted-modules-4.4.0-25-generic N/A linux-backports-modules-4.4.0-25-generic N/A linux-firmware 1.157 Tags: xenial Uname: Linux 4.4.0-25-generic x86_64 UpgradeStatus: Upgraded to xenial on 2016-06-14 (1 days ago) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 08/13/2015 dmi.bios.vendor: LENOVO dmi.bios.version: N14ET32W (1.10 ) dmi.board.asset.tag: Not Available dmi.board.name: 20BS0061ZA dmi.board.vendor: LENOVO dmi.board.version: SDK0E50510 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN14ET32W(1.10):bd08/13/2015:svnLENOVO:pn20BS0061ZA:pvrThinkPadX1Carbon3rd:rvnLENOVO:rn20BS0061ZA:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone: dmi.product.name: 20BS0061ZA dmi.product.version: ThinkPad X1 Carbon 3rd dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1592923/+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