suspend/resume regression

[Niclas Zeising]

On 05/13/18 21:44, Pete Wright wrote:
> 
> 
> On 05/13/2018 10:27, Pete Wright wrote:
>>
>>
>> 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  My kernel is two weeks out of date (r333093), so I need 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.
>>
> ubuntu live image suspends/resumes without issue so this certainly seems 
> to be a freebsd issue unfortunately.  i guess next step is to attempt to 
> find a working CURRENT snapshot that does suspend/resume without issue 
> then start looking at commits?
> 

Hi!
It's a bit worrisome that your regression occurs both on CURRENT and 
STABLE.  There was an update to both drm-next-kmod and drm-stable-kmod 
last week, but both are very minor.  One question, did you install from 
pkg or compile from ports?

Wrt. my own issues, I'm not entirely sure what's going on.  I tried a 
kernel from r333269 and that worked fine, however, r333340 did not. 
I'll need to bisect exactly which revision causes my regression, with 
slowness and lag after resume from sleep.

Regards
-- 
Niclas