Screen flickering on Inspiron 16 Plus 7610 after installing 20.04 LTS
Solution 1:
To fix it you need to add a param to the kernel initialization, you can do that by pressing E at the grub screen or following these steps:
- sudo (editor command) /etc/default/grub
- Comment out this line:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
- Add this line instead:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.enable_psr=0"
- Save and close your editor
- sudo update-grub
- reboot
It seems that starting with either kernel 5.2.0 or 5.3.0 they decided to enable PSR (Panel Self Refresh) by default. Depending on the hardware, this periodic panel refreshing may cause the screen flickering.
I found the answer at:
- https://www.dell.com/community/Linux-General/XPS-13-7390-Ubuntu-Screen-flickering/td-p/7430121/page/3
- https://ubuntuforums.org/showthread.php?t=2339302