Bad animations in GNOME in Kernel 5.14

From	Arun Mani J <J.ArunMani@protonmail.com>
Newsgroups	linux.debian.user
Subject	Bad animations in GNOME in Kernel 5.14
Date	2021-10-02 20:10 +0200
Message-ID	<D3RCp-5gY-3@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Hello everyone

I recently installed Debian 11 in my friend's laptop; a Lenovo IdeaPad 3.
You can get its full details at -
https://psref.lenovo.com/Detail/IdeaPad/IdeaPad_3_15ADA05?M=81W1013MMB.
We then upgraded it to Testing branch.

Everything was lovely and smooth.
But with the recent Kernel upgrade to version 5.14, the animations in GNOME 40
was little rigid or stiff or didn't appear to be smooth at all.
There are also a few random issues like brightness not responding to any value
we set (it is always in full brightness even if lower it to the minimum
possible in Settings), Night Light doesn't make the screen warm anymore,
windows disappear from Activities panel and so on.

However when we boot using Kernel 5.10 via GRUB, everything works perfectly as
usual. I also use Testing and the upgrades didn't cause any issue for me.

I don't know if this is a (known) bug or if it is just a missing parameter in
boot options for the new Kernel. Any kind of help is welcome :)

Output of lspci - https://paste.debian.net/1214120/
Screen record of the stiff animation -
https://upload.disroot.org/r/f85m8ZRQ#CLgu2OwGFwfg/fH6eyICDcDVyCkaQ3HHMQy+9bP0CR0=
GNOME Shell version - 40.5
Non-free repository enabled - No, but we used the live image with non-free
firmware included.
Output of apt list --installed | grep linux-image -
linux-image-5.10.0-8-amd64/now 5.10.46-4 amd64 [installed,local]
linux-image-5.14.0-1-amd64/testing,now 5.14.6-2 amd64 [installed,automatic]
linux-image-amd64/testing,now 5.14.6-2 amd64 [installed]

If you need any other information, please tell me.

Thanks for reading!
J Arun Mani

If I should (have) sent this to another mailing list, my apologies. ^^
Please CC me while replying as I haven't subscribed to this mailing list.

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Bad animations in GNOME in Kernel 5.14 Arun Mani J <J.ArunMani@protonmail.com> - 2021-10-02 20:10 +0200
  Re: Bad animations in GNOME in Kernel 5.14 "Andrew M.A. Cater" <amacater@einval.com> - 2021-10-03 15:30 +0200

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