Re: [Bug 10766] ceased to work framebuffer with videocard NVIDIA GeForce MX 440

Re: [Bug 10766] ceased to work framebuffer with videocard NVIDIA GeForce MX 440

[Andrew Morton]

On Wed, 28 May 2008 18:50:06 -0700 (PDT) bugme-daemon@bugzilla.kernel.org wrote:

> http://bugzilla.kernel.org/show_bug.cgi?id=10766
> 
> 
> 
> 
> 
> ------- Comment #4 from ashirapov.denis@mail.ru  2008-05-28 18:50 -------
> The Night to contribute little clarity in question.
> Bag reveals itself in kernel 2.6.25 and above only.
> If compiled "vanila" kernel with config including standard "vesafb" in kernel
> and "nvidiafb module, that does not be fixed videomode vga=0x317 (and other
> too).
> But, sometimes after several reboot and shutdown "vesafb" is work. After like
> boot in next time again does not work... With other testing me videocard as
> GeForce2 MX 400 all work correctly. 
> Change the files of source kernel:
> arch/x86/boot/video-bios.c  
> arch/x86/boot/video-vesa.c 
> arch/x86/boot/video-vga.c  
> arch/x86/boot/video.c  
> arch/x86/boot/video.h
> version from kernel 2.6.24 problem at all does not solve.
> 
> If compiled "vanila" kernel with config including "nvidiafb" in kernel and give
> to the kernel addition parameters "video=nvidiafb:1024x768-16@75" then
> framebuffer is work.

OK, thanks but please...

: (switched to email.  Please respond via emailed reply-to-all, not via the
: bugzilla web interface).

Let's handle this bug via email from now on so the linux-fbdev-devel
people get to see it.


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Re: [Bug 10766] ceased to work framebuffer with videocard NVIDIA GeForce MX 440

[Krzysztof Helt]

On Wed, 28 May 2008 19:15:26 -0700
Andrew Morton <akpm@linux-foundation.org> wrote:

> On Wed, 28 May 2008 18:50:06 -0700 (PDT) bugme-daemon@bugzilla.kernel.org wrote:
> 
> > http://bugzilla.kernel.org/show_bug.cgi?id=10766
> > 
> > 
> > 
> > 
> > 
> > ------- Comment #4 from ashirapov.denis@mail.ru  2008-05-28 18:50 -------
> > The Night to contribute little clarity in question.
> > Bag reveals itself in kernel 2.6.25 and above only.
> > If compiled "vanila" kernel with config including standard "vesafb" in kernel
> > and "nvidiafb module, that does not be fixed videomode vga=0x317 (and other
> > too).
> > But, sometimes after several reboot and shutdown "vesafb" is work. After like
> > boot in next time again does not work... With other testing me videocard as
> > GeForce2 MX 400 all work correctly. 
> > Change the files of source kernel:
> > arch/x86/boot/video-bios.c  
> > arch/x86/boot/video-vesa.c 
> > arch/x86/boot/video-vga.c  
> > arch/x86/boot/video.c  
> > arch/x86/boot/video.h
> > version from kernel 2.6.24 problem at all does not solve.
> > 
> > If compiled "vanila" kernel with config including "nvidiafb" in kernel and give
> > to the kernel addition parameters "video=nvidiafb:1024x768-16@75" then
> > framebuffer is work.
> 
> OK, thanks but please...
> 

I have handled this bug with Denis, so his additional findings are results from this.
I have tried to reproduce it but I do not have the hardware he has.
It is a bug in vesafb or VESA mode setting. 
I am not able to reproduce this bug on Trident card, 3dfx card, Permedia 2,
ATI on-board card (all using vesafb driver).

The current status is that I will try to find someone with 
the NVidia GeForce 4 MX 4x0 card and borrow it. I hope that
Denis' card has some kind of reference board BIOS and not 
BIOS modified by the card's vendor.

Regards,
Krzysztof

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