linux-kernel - Re: Problem with ata layer in 2.6.24

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Date:	Mon, 28 Jan 2008 15:32:28 -0500
From:	Mark Lord <liml@....ca>
To:	Gene Heskett <gene.heskett@...il.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	IDE/ATA development list <linux-ide@...r.kernel.org>
Subject: Re: Problem with ata layer in 2.6.24

Mark Lord wrote:
> Gene Heskett wrote:
>> ..
>> And so far no one has tried to comment on those 2 dmesg lines I've quoted a couple of times now, here's another:
>> [    0.000000] Nvidia board detected. Ignoring ACPI timer override.
>> [    0.000000] If you got timer trouble try acpi_use_timer_override
>> what the heck is that trying to tell me to do, in some sort of broken english?
> ..
> 
> I think it says this:
> 
>  "If your system is misbehaving, then try adding the acpi_use_timer_override
>   keyword to your kernel command line (/boot/grub/menu.lst) and see if it helps."
> 
> So, you can either hardcode it in /boot/grub/menu.lst (just add it to the end
> of the first line you see there that begins with the word "kernel".
> 
> Or you can just try it temporarily at boot time (safer, but tricker),
> by catching GRUB (the bootloader) before it actually loads Linux.
> 
> Usually there's some key or something it says you have 3 seconds to hit for a "menu",
> so do that, and then use the cursor keys to find the first "kernel" line in that menu
> and hit "e" (edit) to go and add the acpi_use_timer_override keyword to the end of
> that line (same as above).
..

Minor correction (having just tried it here):  once you see the GRUB (boot) menu,
hit the letter e to edit the first entry, then scroll to the "kernel" line,
and hit the letter e again to edit that line.  It should put you at the end of the
line, where you can just type a space and then acpi_use_timer_override and then
hit enter to finish the (temporary) edit.  Then hit b for boot.

-ml
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