** Tags added: kernel-bug-exists-upstream kernel-bug-exists- upstream-4.10-rc1
-- 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/1651830 Title: Intel HD Graphics 520 lagging after kernel upgrade Status in linux package in Ubuntu: Incomplete Bug description: After upgrading to kernel version 4.4.0-53 on a clean install of Lubuntu, I have experienced a persistent problem where the desktop graphics (or any graphics when not using tty 1 to 6) appear to lag or freeze every 1 to 2 seconds for between 0.5 to 1 second. During the freezes, no mouse input is recorded, and most keyboard input is lost. I'm fairly sure this is a kernel issue, as booting with kernel 4.4.0-31 fixes the issue. This problem is also present in 4.4.0-57. I am using a Lenovo ThinkPad X1 Carbon with integrated Intel graphics, which aren't the most powerful (they couldn't handle Unity, hence Lubunut). I am running Lubuntu 16.04 LTS, though I have tried a clean install (from the .iso) of Lubuntu 16.10, and this but still appears. The laptop has a4 core i5-6200U processor (2.3 GHz), 8 Gigs of RAM, and Intel HD Graphics 520 (Skylake) This does not appear to be a thermal issue, or a processor speed issue (the problem persists weather speed step is enabled in the bios or not), though my testing with processor speed step and kernel performance settings (performance/power save) was at best amateur. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-57-generic 4.4.0-57.78 ProcVersionSignature: Ubuntu 4.4.0-57.78-generic 4.4.35 Uname: Linux 4.4.0-57-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: david 1078 F.... pulseaudio CurrentDesktop: LXDE Date: Wed Dec 21 18:21:04 2016 HibernationDevice: RESUME=UUID=046bb03a-34db-4896-b109-e950967a9fae InstallationDate: Installed on 2016-12-14 (7 days ago) InstallationMedia: Lubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160720) MachineType: LENOVO 20FBCTO1WW ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-57-generic.efi.signed root=UUID=f802d856-3841-4231-8eb4-80def322e540 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-57-generic N/A linux-backports-modules-4.4.0-57-generic N/A linux-firmware 1.157.6 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/02/2016 dmi.bios.vendor: LENOVO dmi.bios.version: N1FET43W (1.17 ) dmi.board.asset.tag: Not Available dmi.board.name: 20FBCTO1WW dmi.board.vendor: LENOVO dmi.board.version: SDK0J40709 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN1FET43W(1.17):bd08/02/2016:svnLENOVO:pn20FBCTO1WW:pvrThinkPadX1Carbon4th:rvnLENOVO:rn20FBCTO1WW:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrNone: dmi.product.name: 20FBCTO1WW dmi.product.version: ThinkPad X1 Carbon 4th dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1651830/+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
