Home / ubuntu / Questions / 1404771
Accepted
Esteban Knöbl
Asked: 2022-04-27 06:46:55 +0800 CST

Screen flicker after fresh install of Ubuntu 22.04

  • 772

I am currently experiencing some random screen flickering after a fresh install. I have a Lenovo laptop with Mesa Intel® UHD Graphics 620 (KBL GT2). It was working fine on 21.10.

intel-graphics

3 Answers

  1. Best Answer

    A bug has been reported at Launchpad. If you're experiencing this issue, you can report it too.

    Until it's fixed, this workaround worked for me:

    sudo nano /etc/default/grub

    In the grub file, I added to parameter GRUB_CMDLINE_LINUX_DEFAULT the value "i915.enable_dc=0 intel_idle.max_cstate=2". Then saved the file and run:

    sudo update-grub

    ... to update grub. I did a reboot. I'm now flicker-free for ten days.

    • 3

  2. Had the same issue right after installing Ubuntu 22.04 on ASUS Zenbook also running the Mesa Intel® UHD Graphics 620 (KBL GT2) integrated graphics.

    After searching for a couple of hours, I came across a thread suggesting adding the intel_idle.max_cstate=4 kernel boot parameter in /etc/default/grub as a workaround.

    So far it seems to have solved the flickering issue.

    • 1

  3. Had the same issue with my dell inspiron-15-3567 got the fix by using acpi=off in /etc/default/grub but a new issue cropped up when shutting down system reaches shutdown target systemd-shutdown process-udevd is waiting so have to press down the power button . so have to choose between either screen flicker randomly or a shutdown issue

    • 0