suspend/resume regression

[Pete Wright]

On 05/13/2018 08:58, Theron wrote:
>> Hi!
>> I'm also seeing issues, not as severe as Pete, but after I resume 
>> (which works, with drm-next and DMC firmware), the system becomes 
>> sluggish.  It feels like I/O takes more time, and graphics are 
>> sluggish (very sientific, I know, but for instance git operations are 
>> much slower after a resume).  I know there's been an update to acpica 
>> between my system updates, when this started to happen, but I haven't 
>> had time to revert that update and test again.  I will try to do that 
>> and report back.
>> Regards
> Hi Niclas,
> I used drm-next on Skylake with issues which sound similar. Resuming 
> from suspend, or simply switching the laptop display output off and on 
> from xrandr, resulted in graphics sluggishness (drop to 30fps in 
> glxgears) and graphical corruption in Xorg apps, which persisted even 
> after restarting these apps.  Switching to drm-stable made the 
> problems go away; I haven't had time to figure out what -next is doing 
> differently to cause them.
>
> Pete's issue sounds more severe, and unrelated as it happens without 
> drm loaded.  My kernel is two weeks out of date (r333093), so I need 
> to check whether the more recent changes affect my system as well.
>
so i've done a bit more debugging on my end.  i've even installed the 
11.2-BETA branch last night since 11-STABLE worked without issues about 
a month or so ago.

i've set "debug.acpi.resume_beep=1" and when resuming after entering an 
S3 sleep state the bell rings and does not stop until i do a hard reset 
(both with i915kms loaded and unloaded).

kinda at a loss as to how this could break both CURRENT and basically 
11-STABLE.  i'm going to make a ubuntu live image and test that, my 
laptop is a System76 laptop that shipped with ubuntu originally.  if 
that is broken as well then i guess this could be a hardware issue.

the good news is that 11.2-BETA and drm-next works great (aside from 
suspend/resume) :)

-p

-- 
Pete Wright
pete at nomadlogic.org
@nomadlogicLA