It looks like this might be a Panel Self Refresh bug. PSR was disabled
in Ubuntu 20.04 but seems to be enabled (sometimes) in newer Ubuntu
releases. So please try disabling it by adding a kernel parameter:
i915.enable_psr=0
** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Changed in: mutter (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1937072
Title:
[Lenovo Yoga Slim 7 14IIL05] Incomplete screen redraws
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