From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Andrew Morton <akpm@osdl.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Reboot through the BIOS on newer HP laptops
Date: Sun, 27 Nov 2005 11:56:53 +0000 [thread overview]
Message-ID: <20051127115653.GA7126@srcf.ucam.org> (raw)
In-Reply-To: <20051126203326.07b09394.akpm@osdl.org>
On Sat, Nov 26, 2005 at 08:33:26PM -0800, Andrew Morton wrote:
> But your patch will do this for all HP laptops, will it not? Worrisome.
> Is it not possible to identify particular models?
Yes, but there seems to be an awfully large number of affected models
(at least the nc4200, tc4200, nx6110, nc6120, nc6220, nc6230, nc8220,
nc8230 and nw8240) and HP and myself couldn't figure out /why/ they
won't reboot in the normal way, so there's a fairly good chance that the
next generation of them will have the same problem.
It's actually a bit odd. If I write some userspace code to prod the
keyboard controller in the same way as the kernel reboot code does, the
system reboots. If the kernel does it, it freezes at the point where it
pokes the keyboard controller.
--
Matthew Garrett | mjg59@srcf.ucam.org
prev parent reply other threads:[~2005-11-27 15:11 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-24 5:21 [PATCH] Reboot through the BIOS on newer HP laptops Matthew Garrett
2005-11-24 7:26 ` Alistair John Strachan
2005-11-24 7:29 ` Matthew Garrett
2005-11-27 4:33 ` Andrew Morton
2005-11-27 11:56 ` Matthew Garrett [this message]
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