Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/2065096
Title:
[i915] Display is Laggy/Unresponsive when PSR is enabled
Status in linux package in Ubuntu:
Confirmed
Bug description:
I have Dell Latitude 7430 and 9430 laptops. Both are affected by the
same issue.
When using Ubuntu 22.04 or Ubuntu 24.04 with the default configuration
the in-built display of the laptop is laggy and unresponsive. External
displays are unaffected. The issue does not occur in Ubuntu 20.04.
I believe the issue is with the Intel Panel Self Refresh (PSR).
I was able to employ a workaround that resolves the issue by adding
"i915.enable_psr=0" to grub, as per this thread:
https://ubuntuforums.org/showthread.php?t=2497326
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: xorg 1:7.7+23ubuntu3
ProcVersionSignature: Ubuntu 6.8.0-31.31-generic 6.8.1
Uname: Linux 6.8.0-31-generic x86_64
ApportVersion: 2.28.1-0ubuntu2
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: pass
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Tue May 7 20:54:19 2024
DistUpgraded: Fresh install
DistroCodename: noble
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
Intel Corporation Alder Lake-UP3 GT2 [Iris Xe Graphics] [8086:46a8] (rev 0c)
(prog-if 00 [VGA controller])
Subsystem: Dell Alder Lake-UP3 GT2 [Iris Xe Graphics] [1028:0b0b]
InstallationDate: Installed on 2024-04-30 (7 days ago)
InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
MachineType: Dell Inc. Latitude 7430
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.8.0-31-generic
root=/dev/mapper/ubuntu--vg-ubuntu--lv ro quiet splash i915.enable_psr=0
vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/31/2024
dmi.bios.release: 1.21
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.21.0
dmi.board.name: 0HMKCM
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.asset.tag: 13014441
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvr1.21.0:bd01/31/2024:br1.21:svnDellInc.:pnLatitude7430:pvr:rvnDellInc.:rn0HMKCM:rvrA01:cvnDellInc.:ct10:cvr:sku0B0B:
dmi.product.family: Latitude
dmi.product.name: Latitude 7430
dmi.product.sku: 0B0B
dmi.sys.vendor: Dell Inc.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.120-2build1
version.libgl1-mesa-dri: libgl1-mesa-dri 24.0.5-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:21.1.12-1ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:22.0.0-1build1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20210115-1build1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:1.0.17-2build1
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