Cc += Alexandre Belloni, debian-kernel, stable@k.o Hello,
On Wed, Mar 15, 2017 at 06:10:47PM -0700, Martin Michlmayr wrote:
> > After new installation of Debian the system is properly powering
> > down either shutdownor by power button. Also the restart is working
> > by power button. But after some days running the system the machine
> > is not powering down completely anymore. The status-LED is blinking
> > red/green, power LED is blue. The system can only be restarted by
> > disconnecting from power. The power button is not working in this
> > moment. This effect happens if I stop by shutdown command as well
> > as by power button.
>
> Peter pointed out that this is #794266 which Uwe fixed in the kernel.
>
> So my question: does that also have to be fixed in the kernel in
> stable?
>
> IIRC this was only triggered by newer versions qcontrol but I can't
> remember the details.
I don't know about qcontrol, I only triggered this by direct interaction
with the rtc. There the problem happens if the alarm is enabled and the
respective irq event fires. (So I guess qcontrol enables the alarm.)
This is fixed (as good as possible) in mainline since v4.8-rc1[1]. In
Debian it's fixed since 4.6.4-1. The kernel supports setting an alarm
since
542dd33a4925 ("drivers/rtc/rtc-s35390a.c: add wakealarm support for
rtc-s35390A rtc chip")
which is in v3.7-rc1.
If the device is already in a borked state (i.e. the irq is active but
the respective flag is already read and so cleared) even a new kernel
doesn't repair this. To fix it follow the directions in
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=794266#95
.
Back then I prepared a backport to jessie (which still sits in a topic
branch in the debian-kernel repo[2]) but it seems I forgot to merge it into
the jessie kernel.
I wonder if the better fix would be to fix this in linux-stable instead.
What do you think?
Best regards
Uwe
[1] http://git.kernel.org/linus/3bd32722c827
[2]
https://anonscm.debian.org/cgit/kernel/linux.git/commit/?id=1d69dac66c315a290fb61c5f400e056e8d01fe50
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