Public bug reported:
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
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1651830
Title:
Intel HD Graphics 520 lagging after kernel upgrade
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