Re: [PATCH V4] cpufreq: suspend governors on system suspend/hibernate

Paul Bolle
2013-12-07T15:24:09Z

On Sat, 2013-12-07 at 12:01 +0100, Bjørn Mork wrote:
> Sorry to be making noise here again, but I was eager to verify that the
> fixes in v3.13-rc3 were OK on my system. Unfortunately it seems this
> patch completely broke suspend for me. Hibernete ended up with a blank
> console and no visible activity, without ever writing any image to disk.
>
> There really weren't that many suspects between v3.13-rc2 and v3.13-rc3,
> so I went directly to reverting 5a87182aa21d ("cpufreq: suspend
> governors on system suspend/hibernate") which fixed the problem. I
> didn't bother debugging it further from there. I don't think there is
> anything magic about my system which should make this problem specific
> to it.
>
> I am still using the acpi-cpufreq driver on an old x86_64 laptop if that
> matters.

On an x86 (32 bits) laptop hibernate also broke in v3.13-rc3. On that
machine hibernation itself worked, or at least seemed to work, but the
machine would basically stop after thawing (directly after loading the
hibernation image).

And reverting commit 5a87182aa21d ("cpufreq: suspend governors on system
suspend/hibernate"), on top of v3.13-rc3, also lead to a successful
hibernation/thaw cycle.

Paul Bolle