Re: Is root kernel parameter expected to be the first one or something?

[Piotr Hosowicz <piotr@hosowicz.com>]

Randy Dunlap wrote:
> On Tue, 30 Mar 2010 00:32:42 +0200 Piotr Hosowicz wrote:
> 
>> Randy Dunlap wrote:
>>> On Mon, 29 Mar 2010 22:41:48 +0200 Piotr Hosowicz wrote:
>>>
>>>> Randy Dunlap wrote:
>>>>> On Mon, 29 Mar 2010 22:16:29 +0200 Piotr Hosowicz wrote:
>>>>>
>>>>>> Hello,
>>>>>>
>>>>>> Today I had built a new next kernel with these parameters. I did not get 
>>>>>> what I expected
>>>>> I don't think I understand your question.
>>>>> What did you expect?
>>>> I expected higher resolution console, smaller font etc
>>> Boy was I confused.  I thought that your question was about the root=
>>> kernel boot parameter.
>>>
>>> Well, there are several questions to be asked.  and one more comment.
>>>
>>> 1.  what video (framebuffer) driver are you using?
>> Ashamed to say, but I do not know. vga=791 works perfectly when I 
>> specifiy it via GRUB modification, either during pre-booting phase or in 
>> menu.lst. I thought that it would work if I enable it by the oprions I 
>> provided in the previous message.
> 
> That does sound, hm, suspicious.
> 
>>> 2.  is it builtin the kernel image or is it a loadable module?
>> Loadable mofule I suppose, I can see nvidia.ko in /lib/modules/... - I 
>> install Nbvidia driver with Nvidia tool each time after kernel change. 
>> Each time the module has to be compiled anew.
> 
> So this nvidia driver supports "vga=<value>" ?

I suppose it does because it works perfectly when I put it in menu.lst 
file in GRUB config or specify it in GRUB before the kernel boots.

>>> 3.  have you read Documentation/svga.txt and Documentation/fb/{fbcon,vesafb}.txt ?
>> No, I havent, yet.
> 
> 
>>> And my comment is that your question (about video) would be better on the
>>> linux-fbdev@vger.kernel.org mailing list.  It's not about kbuild/kconfig,
>>> unless kconfig is not saving the build parameters correctly...
>> But I don't know if it is a fb problem, I quoted kernel config 
>> parameters I used, may be there is a problem with them?
> 
> 
> Well, to me, all of the questions are about video/framebuffer usage.
> That's why I recommended that mailing list.

But I read a bit and this is not a case of framebuffer, pkain svga mode.

> Although if you are using the binary-only nvidia driver, it will probably
> be difficult to help you.

It is not binary-only, I have to rebuild the driver in every kernel change.

Regards,

Piotr Hosowicz

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