From: Pavel Machek <pavel@ucw.cz>
To: Mike Waychison <Michael.Waychison@Sun.COM>
Cc: Linux kernel <linux-kernel@vger.kernel.org>
Subject: Re: wakeup_pmode_return jmp failing?
Date: Mon, 6 Dec 2004 14:34:55 +0100 [thread overview]
Message-ID: <20041206133455.GA1213@elf.ucw.cz> (raw)
In-Reply-To: <41B084B4.1050402@sun.com>
Hi!
> Not sure who to direct this to. I've been trying to get acpi s3 to work
> on my pentium M laptop (tecra m2). Without the nvidia driver loaded, I
> can echo 3 > /proc/acpi/sleep and the machine does indeed suspend (power
> light throbs and all). However, when I try to wake up the thing, it
> would flash the bios screen and throw me back to grub.
>
> I've been investigating the code at arch/i386/kernel/acpi/wakeup.S, and
> have discovered that if I place a busy wait directory before the ljmpl
> to wakeup_pmode_return, that I indeed do see 'Lin' on the screen instead
> of the bios screen.
>
> The joke is, if I place a busy wait first thing after the
> wakeup_pmode_return label, it never gets executed and I get a regular boot.
>
> It would appear as though the jump from 16bit code into the 32bit code
> is failing and the bios is kicking in with a regular startup.
See archives of linux-acpi lists.
Pavel
--
People were complaining that M$ turns users into beta-testers...
...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl!
next prev parent reply other threads:[~2004-12-06 13:35 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-03 15:22 wakeup_pmode_return jmp failing? 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
2004-12-06 13:36 ` Pavel Machek
2004-12-06 13:34 ` Pavel Machek [this message]
2004-12-07 3:39 ` Mike Waychison
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20041206133455.GA1213@elf.ucw.cz \
--to=pavel@ucw.cz \
--cc=Michael.Waychison@Sun.COM \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.