(In reply to Andrey Grodzovsky from comment #18)
> (In reply to dwagner from comment #17)
> > Interesting observation: If I first switch from the X11 display to the
> > console display (with Alt-F2), and then enter "echo mem >/sys/power/state"
> > on the console, above described crashes upon S3 resume do not occur, and I
> > do not see the "[TTM] Buffer eviction failed" in the kernel log, neither
> > with vm_update_mode=0, nor with vm_update_mode=3.
> > 
> > Switching back to the X11 display after a successful S3 resume to the
> > console also works fine.
> > 
> > What could be the relevant difference here?
> 
> Well, there is no acceleration involved when in console mode. So maybe this
> has something to do with it.
> 
> Anyway, i am sidetracked a bit by an internal requirement but once i finish
> I will get back to this issue especially because I got another report with
> the same failure as you describe.

I was able to reproduce this instantly without even using page tables CPU
update mode. Looks like a regression since S3 was working fine for long time.
Were you able to find a regression point for this ?