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Old 10-18-2005, 05:49 PM   #1
slinky2004
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disobedient kernel


my kernel doesn't seem to accept certain boot parameters and i'm trying to figure out why. i havent had a chance to test all of the parameters in /usr/src/linux/Documentation/kernel-parameters.txt, but here's what i've tried. i start my computer up and when lilo gives me the prompt, i enter the lable of my kernel, followed by the parameter:
Code:
boot: mykernel parameter=whatever
now for some reason, certain parameters just seem to be getting ignored. For example, i enter:
Code:
boot: mykernel video=vesafb: off
to disable vesa and it just loads vesa and uses the framebuffer anyway. video=doesnt work at all, i've tried specifying a different fb driver with it as well:
Code:
boot: mykernel video=vga16fb
i've also tried using the "noacpi" boot parameter. so at boot i enter:
Code:
boot: mykernel noacpi
which should "not use ACPI for IRQ routing" according to kernel-parameters.txt, but for some reason at startup i see this:
Code:
PCI: Using ACPI for IRQ routing
even though i've used this parameter.

the only parameters i've been able to get working is "root=". if i enter
Code:
boot: mykernel root=/dev/asdf
it tries to use /dev/asdf as the root filesystem and has a kernel panic at startup. i've also been able to use the "vga=" parameter, but apparently this is just an instruction to lilo, not an actual kernel parameter.

so, why don't certain kernel parameters work for me? am i not entering them right or what? i have acpi and framebuffer enabled, so shouldn't i be able to use the video and noacpi parameters?
 
Old 10-18-2005, 06:26 PM   #2
Tinkster
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You're not using a initrd by any chance?


Cheers,
Tink
 
Old 10-18-2005, 06:58 PM   #3
slinky2004
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yeah, i have it compiled into my kernel, why?

Last edited by slinky2004; 10-19-2005 at 07:48 PM.
 
Old 10-19-2005, 07:49 PM   #4
slinky2004
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hey tinkster, you havent forgotten about me have you? i think we might be close to a solution!
bump
 
Old 10-19-2005, 08:19 PM   #5
Tinkster
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What I meant is whether your boot-loader is grabbing
and initrd.img to boot the machine.


Cheers,
Tink
 
Old 10-19-2005, 08:36 PM   #6
slinky2004
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it might be, how do i know?
 
Old 10-19-2005, 09:13 PM   #7
Tinkster
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Looking at grub's menu or lilo.conf, whichever you're
using :}
 
Old 10-19-2005, 10:59 PM   #8
slinky2004
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hmm, i guess i'm not using an initrd image then. i cant understand why my boot params are being ignored tho.
 
  


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