For the last couple of months, my problem I've always had with sleep/wake on this laptop has been joined with a second problem, where sometimes the screen will flicker violently for bursts of 3 to 4 seconds, in clusters of up to 20 seconds at a time.
My experience with Linux has become noticeably worse since the kernel started accepting slop commits. I don't have a way to know if my experience has got worse *because* the kernel started accepting slop commits. I only know it's gotten worse.