From: Peter Chubb <peter.chubb@nicta.com.au>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Peter Chubb <peter.chubb@nicta.com.au>,
Matthew Garrett <mjg59@srcf.ucam.org>,
linux-kernel@vger.kernel.org
Subject: Re: Acer Aspire One now hangs on reboot/shutdown
Date: Fri, 01 Jul 2011 09:10:33 +1000 [thread overview]
Message-ID: <w4d3huc3va.wl%peter@chubb.wattle.id.au> (raw)
In-Reply-To: <4E0CC06E.7040204@zytor.com>
>>>>> "H" == H Peter Anvin <hpa@zytor.com> writes:
H> 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
>>
H> OK, so this machine is actively broken and needs a quirk.
H> Which "reboot=" options work on this machine?
b and k
t, p and a all result in a machine hang with the power light on, the
backlight off, and no apparent activity anywhere.
H> -hpa
H> --
Dr Peter Chubb peter DOT chubb AT nicta.com.au
http://www.ertos.nicta.com.au ERTOS within National ICT Australia
All things shall perish from under the sky/Music alone shall live, never to die
next prev parent reply other threads:[~2011-06-30 23:11 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-22 10:38 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
2011-06-30 23:10 ` Peter Chubb [this message]
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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