Public bug reported:
Desktop performance on my laptop (Intel HD 520, driver: i915) used to be
generally good on previous Ubuntu releases but on 18.04, there is a VERY
noticeable regression. Moving windows around in GNOME is choppy and
tearing. It gets dramatic after the laptop resumes from suspend, GNOME
drops to literally ~1-2 FPS. Logging out and restarting the session
usually fixes the problem in that it restores the barely acceptable
performance level prior to suspend.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7
ProcVersionSignature: Ubuntu 4.15.0-15.16-lowlatency 4.15.15
Uname: Linux 4.15.0-15-lowlatency x86_64
ApportVersion: 2.20.9-0ubuntu6
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Sat Apr 21 16:04:38 2018
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, including running git bisection searches
GraphicsCard:
Intel Corporation HD Graphics 520 [8086:1916] (rev 07) (prog-if 00 [VGA
controller])
Subsystem: Hewlett-Packard Company Skylake GT2 [HD Graphics 520] [103c:8079]
Advanced Micro Devices, Inc. [AMD/ATI] Opal XT [Radeon R7 M265] [1002:6604]
(rev 81) (prog-if 00 [VGA controller])
Subsystem: Hewlett-Packard Company Opal XT [Radeon R7 M265] [103c:814f]
InstallationDate: Installed on 2018-04-03 (18 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180402)
MachineType: HP HP EliteBook 850 G3
ProcKernelCmdLine: BOOT_IMAGE=/bionic/vmlinuz-4.15.0-15-lowlatency.efi.signed
root=UUID=b6480aee-7c63-4ce4-9e8d-cdbef768b982 ro
rootflags=subvol=@,relatime,autodefrag,space_cache quiet splash
module.sig_enforce=1 intel_pstate=skylake_hwp vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/31/2016
dmi.bios.vendor: HP
dmi.bios.version: N75 Ver. 01.10
dmi.board.name: 8079
dmi.board.vendor: HP
dmi.board.version: KBC Version 85.6F
dmi.chassis.asset.tag: 5CG6351LQL
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.modalias:
dmi:bvnHP:bvrN75Ver.01.10:bd07/31/2016:svnHP:pnHPEliteBook850G3:pvr:rvnHP:rn8079:rvrKBCVersion85.6F:cvnHP:ct10:cvr:
dmi.product.family: 103C_5336AN G=N L=BUS B=HP S=ELI
dmi.product.name: HP EliteBook 850 G3
dmi.sys.vendor: HP
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.91-2
version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.0~rc5-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.0~rc5-1ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20171229-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic performance third-party-packages ubuntu
wayland-session
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https://bugs.launchpad.net/bugs/1765911
Title:
Major performance regression from Ubuntu 17.10 with i915
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