Yay! That fixed it. Thanks Anachron!
For the record, this is what I did:
- I edited /etc/default/grub using “sudo nano /etc/default/grub” and added “i915.enable_psr=0” to the end of the GRUB_CMDLINE_LINUX_DEFAULT line.
- I ran “sudo update-grub” to apply those changes.
- I rebooted
- I verified that
That’s it. Now I’m happy! 