Flickering and a lack of smoothness are two different issues. The lack
of smoothness would just be due to your GPU staying at a lower frequency
more often, so it's not a bug but something you would need to tune
yourself.
As for the flickering, please edit /etc/default/grub and change:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
to:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.enable_psr=0"
and then run:
sudo update-grub
and reboot.
If the problem still happens after that then while it is happening,
please run:
journalctl -b0 > journal.txt
and attach the resulting text file here along with a video of the
flickering problem.
** Summary changed:
- screen flickring after installing cpufreq
+ [HP EliteBook 820 G2] screen flickring after installing cpufreq
** Package changed: xorg (Ubuntu) => linux-hwe-5.11 (Ubuntu)
** Changed in: linux-hwe-5.11 (Ubuntu)
Status: New => Incomplete
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1945895
Title:
[HP EliteBook 820 G2] screen flickring after installing cpufreq
Status in linux-hwe-5.11 package in Ubuntu:
Incomplete
Bug description:
after installing cpufreq the screen flickring and smoothness
disappeared in ubuntu .
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.11.0-38.42~20.04.1-generic 5.11.22
Uname: Linux 5.11.0-38-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.20
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Sun Oct 3 18:57:55 2021
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
Intel Corporation HD Graphics 5500 [8086:1616] (rev 09) (prog-if 00 [VGA
controller])
Subsystem: Hewlett-Packard Company HD Graphics 5500 [103c:225a]
InstallationDate: Installed on 2021-07-01 (94 days ago)
InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64
(20210209.1)
MachineType: Hewlett-Packard HP EliteBook 820 G2
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.11.0-38-generic
root=UUID=3a425ccf-6b17-4740-a951-62415983b2e2 ro
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/24/2015
dmi.bios.release: 1.4
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: M71 Ver. 01.04
dmi.board.name: 225A
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 96.54
dmi.chassis.asset.tag: 5CG5172BFZ
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.ec.firmware.release: 150.84
dmi.modalias:
dmi:bvnHewlett-Packard:bvrM71Ver.01.04:bd02/24/2015:br1.4:efr150.84:svnHewlett-Packard:pnHPEliteBook820G2:pvrA3009C510203:skuN3F11EC#AB4:rvnHewlett-Packard:rn225A:rvrKBCVersion96.54:cvnHewlett-Packard:ct10:cvr:
dmi.product.family: 103C_5336AN G=N L=BUS B=HP S=ELI
dmi.product.name: HP EliteBook 820 G2
dmi.product.sku: N3F11EC#AB4
dmi.product.version: A3009C510203
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.105-3~20.04.2
version.libgl1-mesa-dri: libgl1-mesa-dri 21.0.3-0ubuntu0.3~20.04.3
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.11-1ubuntu1~20.04.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20200226-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1
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