[Buildroot] Buildroot 2013.08.1, Linaro 2013.04 as toolchain, kernel 3.0.101, wakeup from standby issue

Thomas Petazzoni thomas.petazzoni at free-electrons.com
Sun Nov 10 08:48:02 UTC 2013

Dear Stanislav Vlasic,

On Sun, 10 Nov 2013 05:17:28 +0100, Stanislav Vlasic wrote:

> Here are my steps I perform to suspend ARM based device:
> - close all running apps (eg. XBMC)
> - sync command to save all cached data
> - issue mem to /sys/power/state sysfs node
> - after that power indicator led turns off
> That all works just fine.
> After interrupt (IR remote in my case handled by uboot and ARC), kernel
> wakes up, resumes all drivers, puts power led in ON state and ends up with
> unknown_wakeups message.
> Any help or hint would be appreciated :) Android JellyBean 4.2.2 on same
> platform works way it should (it wakes up).

What makes you think this is a Buildroot problem? It seems like a
kernel problem, so I would suggest to contact the people who did the
kernel support for your hardware platform (which you forgot to mention,

Best regards,

Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering

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