Using the instructions in the post you referenced, I was able to apply the kernel patch successfully, and it finally started responding to power button presses from sleep!
But it would immediately freeze up on wake at either a black screen or at XScreenSaver password prompt. I had to remove the USB-C Thunderbolt 3 controller from the devices list of the sys-usb vm in order to prevent this freeze, and now it works very well, with the minor annoyance of it taking a few seconds to fully recover and wake the display or respond to input. -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/4febfd85-afec-49e8-a0cb-2cfb10f0d33d%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
