Messages in this thread | | | Date | Fri, 03 Dec 2004 10:22:28 -0500 | From | Mike Waychison <> | Subject | wakeup_pmode_return jmp failing? |
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Hello,
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.
Anybody have any suggestions?
- -- Mike Waychison Sun Microsystems, Inc. 1 (650) 352-5299 voice 1 (416) 202-8336 voice
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