UPDATE: I installed kernel 4.16.7 from http://kernel.ubuntu.com/~kernel- ppa/mainline/ and things get much better. Not as good as it was on 17.10 but largely usable. Some regression in the i915 driver must have occurred in 4.15 and now it's catching up again apparently.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1765911 Title: Major performance regression from Ubuntu 17.10 with i915 Status in xorg package in Ubuntu: Confirmed Bug description: 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1765911/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
