This is a note to let you know that I've just added the patch titled ALSA: hda/realtek: Add subwoofer quirk for Acer Predator G9-593 to the 6.6-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: alsa-hda-realtek-add-subwoofer-quirk-for-acer-predator-g9-593.patch and it can be found in the queue-6.6 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it.