From: "H. Peter Anvin" <hpa@zytor.com>
To: Peter Chubb <peter.chubb@nicta.com.au>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>, linux-kernel@vger.kernel.org
Subject: Re: Acer Aspire One now hangs on reboot/shutdown
Date: Thu, 30 Jun 2011 11:29:02 -0700 [thread overview]
Message-ID: <4E0CC06E.7040204@zytor.com> (raw)
In-Reply-To: <w4sjr1v323.wl%peter@chubb.wattle.id.au>
On 06/22/2011 04:50 PM, Peter Chubb wrote:
>>>>>> "Matthew" == Matthew Garrett <mjg59@srcf.ucam.org> writes:
>
> Matthew> On Wed, Jun 22, 2011 at 08:38:08PM +1000, Peter Chubb wrote:
>>>
>>> Hi Matthew, GIT commit 660e34cebf0a11d54f2d5dd8838607452355f321
>>> x86: reorder reboot method preferences causes my Acer Aspire One to
>>> hang on shutdown/reboot.
>
> Matthew> Also, shutdown? Really?
>
> Sorry, shutdown -r (which is reboot really).
>
>
> Writing the reset value `6' to the reset port 3321 in single user mode
> makes the screen go blank, and the machine to become totally
> unresponsive. The power light remains on. But the machine does *not*
> reboot.
>
> I've put up the ACPI tables at
> http://www.cse.unsw.edu.au/~peterc/AspireOneACPI
>
> The relevant part of the FADT is:
> [074h 0116 12] Reset Register : <Generic Address Structure>
> [074h 0116 1] Space ID : 01 (SystemIO)
> [075h 0117 1] Bit Width : 08
> [076h 0118 1] Bit Offset : 00
> [077h 0119 1] Access Width : 01
> [078h 0120 8] Address : 0000000000000CF9
>
> [080h 0128 1] Value to cause reset : 06
>
OK, so this machine is actively broken and needs a quirk.
Which "reboot=" options work on this machine?
-hpa
next prev parent reply other threads:[~2011-06-30 18:29 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-22 10:38 Acer Aspire One now hangs on reboot/shutdown Peter Chubb
2011-06-22 19:42 ` Matthew Garrett
2011-06-22 19:43 ` Matthew Garrett
2011-06-22 23:50 ` Peter Chubb
2011-06-30 18:29 ` H. Peter Anvin [this message]
2011-06-30 23:10 ` Peter Chubb
2011-06-30 23:58 ` Matthew Garrett
2011-07-01 0:18 ` H. Peter Anvin
2011-07-01 0:22 ` Matthew Garrett
2011-07-01 0:31 ` Peter Chubb
2011-07-01 0:33 ` H. Peter Anvin
2011-07-01 0:35 ` Matthew Garrett
2011-07-01 0:38 ` Matthew Garrett
2011-07-06 0:56 ` Peter Chubb
2011-07-06 4:07 ` [tip:x86/urgent] x86, reboot: Acer Aspire One A110 reboot quirk tip-bot for Peter Chubb
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