linux-kernel - Re: Regression on Dell XPS13

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Message-ID: <b9610f92-d0d8-604b-2882-69c6d22dfcdc@leemhuis.info>
Date:   Tue, 17 Jan 2017 18:29:34 +0100
From:   Thorsten Leemhuis <linux@...mhuis.info>
To:     Paul Menzel <pmenzel@...gen.mpg.de>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Mario Limonciello <mario.limonciello@...l.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Tomas Winkler <tomas.winkler@...el.com>,
        Jan Niehusmann <jan@...dor.com>,
        "Usyskin, Alexander" <alexander.usyskin@...el.com>,
        linux-kernel@...r.kernel.org, "Chen, Yu C" <yu.c.chen@...el.com>,
        "Sarvela, Tomi P" <tomi.p.sarvela@...el.com>,
        Daniel Blueman <daniel@...ra.org>,
        Len Brown <len.brown@...el.com>, linux-pm@...r.kernel.org
Subject: Re: Regression on Dell XPS13

Lo! On 17.01.2017 15:34, Paul Menzel wrote:
> […]
>>> Paul, are you still having this issue?
>> Don't know about Paul, but I did a quick test with rc4 on my machine and
>> the issue is still there :-/
> I didn’t test Linux 4.10-rc4 yet, but I completed the bisection.
> 
> ```
> 406e79385f3223d82272cf2be86bc95cd000a258 is the first bad commit
> commit 406e79385f3223d82272cf2be86bc95cd000a258
> Author: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> Date:   Mon Nov 21 22:45:40 2016 +0100
> 
>      PM / sleep: System sleep state selection interface rework
> 

@Paul: Many thx for tracking this down. I didn't try to revert the
patch, but my XPS 13 (9360) enters and resumes properly from
suspend-to-ram after running "echo deep | sudo tee /sys/power/mem_sleep"
(#sigh, I should have thought of this myself earlier, as I had seen that
commit :-/ )

@Mario: many thx for the detailed mail you just send to explain things.
Looking forward to give supend-to-idle (which Windows uses on this
laptop) a try. If you need help with testing anything let me know, if I
can spare a minute I'll try to help.

Ciao, Thorsten