Unknown boot option `radeon.agpmode=1'

[Ren Höek]

Yesterday I installer Ubuntu 9.10. With my Mobility Radeon 9700 I always have to set AGPMode to 1, otherwise I'm getting freezes.

It works if I create manually a xorg.conf, but as this config file is some kind of deprecated I was wondering if there has to be some other way.

So I tried it with a boot option, but dmesg gives

[    0.000000] Unknown boot option `radeon.agpmode=1': ignoring

.
Though following modinfo radeon it seems to be a correct option...

...am I doing something wrong? Is there another more elegant way to set AGPMode to 1?

Thanks a lot
Ren

[curaga]

If radeon is a module, instead of built into the kernel, the option would go to /etc/modprobe*

[Ren Höek]

radeon is not listed in /etc/modules and adding the option to /etc/modprobe.conf does not have any effect.
As far as I understand, radeon ist loaded with the kernel (build in).
Pelase correct if I'm drawing the wrong conclusions...

[legume]

radeon is not listed in /etc/modules and adding the option to /etc/modprobe.conf does not have any effect.
As far as I understand, radeon ist loaded with the kernel (build in).
Pelase correct if I'm drawing the wrong conclusions...

I just did a quick test and the agpmode option only works if you are using kernel modesetting.

I think ubuntu defaults to user modesetting so you'll still need to make an xorg.conf.

If you are using kms then AFAIK with ubuntu you need to add a file to /etc/mod????/ containing a line like - options radeon agpmode=1
then you have to run some command to update the database/something or it won't work.

You may guess from the vagueness that I don't use ubuntu :-)

[Ren Höek]

I just did a quick test and the agpmode option only works if you are using kernel modesetting.

I think ubuntu defaults to user modesetting so you'll still need to make an xorg.conf.

[..]

[drm] radeon default to kernel modesetting DISABLED.

Well then, I will use the xorg.conf. I was just curious...

Thanks all for the help