From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [Discussion] how to implement external power down for ARM
Date: Thu, 07 May 2015 11:43:15 +0200 [thread overview]
Message-ID: <4412805.fx6caR2qJ7@wuerfel> (raw)
In-Reply-To: <554B2DF5.4040600@huawei.com>
On Thursday 07 May 2015 17:18:45 Shannon Zhao wrote:
> On 2015/5/7 16:55, Arnd Bergmann wrote:
> > On Thursday 07 May 2015 10:39:35 Shannon Zhao wrote:
> >> I tried Ubuntu Trusty from Christoffer, when typing "system_powerdown"
> >> on QEMU monitor, "cat /dev/input/event0 | hexdump" shows the event is
> >> triggered but the guest doesn't poweroff.
> >
> > Can you try installing acpid by running 'sudo apt-get install acpid' in
> > the image? I suspect it should just work by scanning the event devices
> > even in the absence of ACPI on the platform.
> >
>
> Cool, I start acpid and the poweroff works.
Ok, great, thanks for confirming this! Have you tried reboot as well?
>From looking at the acpid source code, I suspect it does not work unless
extra configuration files are added, but that would be the same as for the
ACPI case.
Arnd
next prev parent reply other threads:[~2015-05-07 9:43 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-30 1:03 [Discussion] how to implement external power down for ARM Shannon Zhao
2015-04-30 8:03 ` Arnd Bergmann
2015-04-30 9:08 ` Peter Maydell
2015-04-30 9:19 ` Arnd Bergmann
2015-04-30 9:29 ` Mark Rutland
2015-04-30 9:56 ` Arnd Bergmann
2015-05-04 2:09 ` Shannon Zhao
2015-05-04 15:49 ` Arnd Bergmann
2015-05-05 2:57 ` Joel Stanley
2015-05-05 9:53 ` Arnd Bergmann
2015-05-05 10:51 ` Christoffer Dall
2015-05-05 10:55 ` Arnd Bergmann
2015-05-05 11:13 ` Shannon Zhao
2015-05-06 6:56 ` Shannon Zhao
2015-05-06 7:29 ` Arnd Bergmann
2015-05-06 8:19 ` Shannon Zhao
2015-05-06 8:37 ` Arnd Bergmann
2015-05-06 8:41 ` Shannon Zhao
2015-05-06 10:14 ` Christoffer Dall
2015-05-07 2:39 ` Shannon Zhao
2015-05-07 8:55 ` Arnd Bergmann
2015-05-07 9:18 ` Shannon Zhao
2015-05-07 9:43 ` Arnd Bergmann [this message]
2015-05-07 12:10 ` Shannon Zhao
2015-05-07 12:12 ` Peter Maydell
2015-05-07 12:18 ` Shannon Zhao
2015-05-07 12:34 ` Peter Maydell
2015-05-07 12:48 ` Arnd Bergmann
2015-05-07 13:02 ` Shannon Zhao
2015-04-30 13:38 ` Hanjun Guo
2015-05-04 1:55 ` Shannon Zhao
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