From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Toby Cubitt <t.s.cubitt.98-dated-1200750052.7226bb@cantab.net>
Cc: linux-acpi@vger.kernel.org
Subject: Re: Rotating tablet screen updates lid state but doesn't generate an event
Date: Sun, 7 Feb 2010 19:15:24 +0000 [thread overview]
Message-ID: <20100207191524.GA19835@srcf.ucam.org> (raw)
In-Reply-To: <478B660B.3030706@cantab.net>
On Mon, Jan 14, 2008 at 01:39:23PM +0000, Toby Cubitt wrote:
> So it seems as though acpi is correctly identifying closing the lid and
> rotating the screen into tablet mode as two different types of events,
> but isn't writing anything to /proc/acpi/event for the latter. On the
> other hand, it is generating identical events for both opening the lid
> and rotating the screen back to laptop mode.
It's likely that your firmware sends some other sort of event for this.
There's nothing in the ACPI spec for handing tablet state changes, so it
tends to vary by vendor.
> I'm happy to provide more information if it would be helpful, but I have
> no experience at all in helping debug kernel code, so I'm not sure what
> I should be telling you.
Can you send a copy of the output of the acpidump command?
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2010-02-07 19:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-14 13:39 Rotating tablet screen updates lid state but doesn't generate an event Toby Cubitt
2010-02-07 19:15 ` Matthew Garrett [this message]
-- strict thread matches above, loose matches on Subject: below --
2010-02-07 15:16 Thomas Ibbotson
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