This is a note to let you know that I've just added the patch titled drm/i915: Workaround broken BIOS DBUF configuration on TGL/RKL to the 5.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drm-i915-workaround-broken-bios-dbuf-configuration-on-tgl-rkl.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it.