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From: Matthew Garrett <mgarrett@chiark.greenend.org.uk>
To: Bill Davidsen <davidsen@tmr.com>, linux-kernel@vger.kernel.org
Subject: Re: wakeup_pmode_return jmp failing?
Date: Sun, 5 Dec 2004 02:56:57 +0000	[thread overview]
Message-ID: <E1Cama1-0002Ad-00@chiark.greenend.org.uk> (raw)
In-Reply-To: <41B09D4B.3090906@tmr.com>

Bill Davidsen <davidsen@tmr.com> wrote:

> That's serious, I have an IBM, Tecra, Dell, and Acer, and 5-6 friends 
> running Linux on laptops. Every one (other than the Acer) works with 
> "apm -s" and recovers. Some work with "apm -S". The Acer never had a 2.4 
> kernel, and I haven't rebuilt with apm on 2.6 (or even looked to see if 
> it was supported). All of these suspend fine with ACPI, none ever wakes up.

Most modern hardware doesn't have APM support any more. Tracking these
bugs down is important, otherwise we'll never be able to support
anything that people can actually buy.

For what it's worth, ACPI suspend/resume seems to work on most machines
as of 2.6.9 - the major sticking point is restoring video state, and the
small number of pieces of hardware that still have basic suspend/resume
issues (a lot of VIA-based hardware, at least one HP device). Based on
my tests so far, around 70% of machines ought to have a semi-reasonable
chance of working ACPI S3 nowadays.

-- 
Matthew Garrett | mjg59-chiark.mail.linux-rutgers.kernel@srcf.ucam.org

  parent reply	other threads:[~2004-12-05  2:57 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-12-03 15:22 Mike Waychison
2004-12-03 17:07 ` Bill Davidsen
2004-12-03 17:04   ` Mike Waychison
2004-12-05  3:04     ` Matthew Garrett
2004-12-05  2:56   ` Matthew Garrett [this message]
2004-12-06 13:36   ` Pavel Machek
2004-12-06 13:34 ` Pavel Machek
2004-12-07  3:39   ` Mike Waychison

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