No please don't change Nvidia drivers again. It only creates risk of new problems. And besides, it looks like the main issue here is not being caused by Nvidia.
To test kernel 5.12.14 please download:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.12.14/amd64/linux-headers-5.12.14-051214-generic_5.12.14-051214.202106301439_amd64.deb
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.12.14/amd64/linux-headers-5.12.14-051214_5.12.14-051214.202106301439_all.deb
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.12.14/amd64/linux-image-unsigned-5.12.14-051214-generic_5.12.14-051214.202106301439_amd64.deb
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.12.14/amd64/linux-modules-5.12.14-051214-generic_5.12.14-051214.202106301439_amd64.deb
and then install them all together:
sudo dpkg -i linux*.deb
No please don't change Nvidia drivers again. It only creates risk of new problems. And besides, it looks like the main issue here is not being caused by Nvidia.
To test kernel 5.12.14 please download:
https:/ /kernel. ubuntu. com/~kernel- ppa/mainline/ v5.12.14/ amd64/linux- headers- 5.12.14- 051214- generic_ 5.12.14- 051214. 202106301439_ amd64.deb
https:/ /kernel. ubuntu. com/~kernel- ppa/mainline/ v5.12.14/ amd64/linux- headers- 5.12.14- 051214_ 5.12.14- 051214. 202106301439_ all.deb
https:/ /kernel. ubuntu. com/~kernel- ppa/mainline/ v5.12.14/ amd64/linux- image-unsigned- 5.12.14- 051214- generic_ 5.12.14- 051214. 202106301439_ amd64.deb
https:/ /kernel. ubuntu. com/~kernel- ppa/mainline/ v5.12.14/ amd64/linux- modules- 5.12.14- 051214- generic_ 5.12.14- 051214. 202106301439_ amd64.deb
and then install them all together:
sudo dpkg -i linux*.deb