nvidia fb 0.9.0

nvidia fb 0.9.0

[Louis Garcia]

I gave upgraded to 2.4.2pre on my RH7 box and while using riva-128 fb 
noticed when in X all the white parts of my desktop are to dark, it is 
almost unreadable. I think it might have to do with video timing, is 
there a way to fix this?

Lou

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Re: nvidia fb 0.9.0 (0.9.2?)

[Bakonyi Ferenc]

Louis Garcia <louisg00@bellsouth.net> wrote:

> I gave upgraded to 2.4.2pre on my RH7 box and while using riva-128 fb 
> noticed when in X all the white parts of my desktop are to dark, it is 
> almost unreadable. I think it might have to do with video timing, is 
> there a way to fix this?

	Hi!

Color handling on Riva 128 in 8bpp mode is a little bit confused.
The table below summarizes the depth of color registers in 8bpp mode:

                | Riva 128 | Riva TNT and higher
----------------+----------+--------------------
XF86            | 6 bit    | 8 bit
----------------+----------+--------------------
rivafb < 0.7.2  | 6 bit    | 6 bit 'dark console'
----------------+----------+--------------------
rivafb 0.7.3    | 6 bit    | 8 bit
----------------+----------+--------------------
rivafb 0.9.2    | 8 bit    | 8 bit
----------------+----------+--------------------

The Riva hardware can be programmed to expect 8 bit or 6 bit color 
registers. Rivafb < 0.7.2 used 6 bit color registers, but the hw was 
programmed to 8 bit registers on TNT/TNT2. That was causing the so 
called 'dark console' bug.
Rivafb 0.9.2 begins to utilize 8 bits on Riva 128, but your X server 
uses only 6 bits of them so your desktop's brightness is 1/4. Now 
Riva 128 has a 'dark X' bug. :)
The X server should be patched. Which X server/version are you using?

Regards:
	Ferenc Bakonyi

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Re: nvidia fb 0.9.0 (0.9.2?)

[Louis Garcia]

Bakonyi Ferenc wrote:

> Louis Garcia <louisg00@bellsouth.net> wrote:
> 
>> I gave upgraded to 2.4.2pre on my RH7 box and while using riva-128 fb 
>> noticed when in X all the white parts of my desktop are to dark, it is 
>> almost unreadable. I think it might have to do with video timing, is 
>> there a way to fix this?
> 
> 
> 	Hi!
> 
> Color handling on Riva 128 in 8bpp mode is a little bit confused.
> The table below summarizes the depth of color registers in 8bpp mode:
> 
>                 | Riva 128 | Riva TNT and higher
> ----------------+----------+--------------------
> XF86            | 6 bit    | 8 bit
> ----------------+----------+--------------------
> rivafb < 0.7.2  | 6 bit    | 6 bit 'dark console'
> ----------------+----------+--------------------
> rivafb 0.7.3    | 6 bit    | 8 bit
> ----------------+----------+--------------------
> rivafb 0.9.2    | 8 bit    | 8 bit
> ----------------+----------+--------------------
> 
> The Riva hardware can be programmed to expect 8 bit or 6 bit color 
> registers. Rivafb < 0.7.2 used 6 bit color registers, but the hw was 
> programmed to 8 bit registers on TNT/TNT2. That was causing the so 
> called 'dark console' bug.
> Rivafb 0.9.2 begins to utilize 8 bits on Riva 128, but your X server 
> uses only 6 bits of them so your desktop's brightness is 1/4. Now 
> Riva 128 has a 'dark X' bug. :)
> The X server should be patched. Which X server/version are you using?
> 
> Regards:
> 	Ferenc Bakonyi
> 
> 
> 
> 
I'm using XFree86-4.0.1 with the nv driver. You are right, it's ver 
0.9.2 for the fb.

Where can I get the patch? Should I upgrade to XFree86-4.0.2?

Lou

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Re: nvidia fb 0.9.0 (0.9.2?)

[Bakonyi Ferenc]

Louis Garcia <louisg00@bellsouth.net> wrote:

> I'm using XFree86-4.0.1 with the nv driver. You are right, it's ver 
> 0.9.2 for the fb.
>
> Where can I get the patch? Should I upgrade to XFree86-4.0.2?

Not yet, we have to write that patch first... :) I'll grab an XFree 
source soon.
Please test other color depths too: 15bpp and 32bpp.

Thanks!
	Ferenc

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Re: nvidia fb 0.9.0 (0.9.2?)

[Bakonyi Ferenc]

/me wrote:

> Louis Garcia <louisg00@bellsouth.net> wrote:
> 
> > I'm using XFree86-4.0.1 with the nv driver. You are right, it's ver 
> > 0.9.2 for the fb.
> >
> > Where can I get the patch? Should I upgrade to XFree86-4.0.2?
> 
> Not yet, we have to write that patch first... :) I'll grab an XFree 
> source soon.
> Please test other color depths too: 15bpp and 32bpp.

	Hi!

I've tried to reproduce your problem, but I failed. Rivafb 0.9.2 on 
Asus V3000 (Riva 128) with nv driver (from XFree-4.0.1g, Debian 
Woody) works fine for me. Would you like to try out some other XFree 
versions too?

Regards:
	Ferenc Bakonyi

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Re: nvidia fb 0.9.0 (0.9.2?)

[Louis Garcia]

Bakonyi Ferenc wrote:

> /me wrote:
> 
>> Louis Garcia <louisg00@bellsouth.net> wrote:
>> 
>>> I'm using XFree86-4.0.1 with the nv driver. You are right, it's ver 
>>> 0.9.2 for the fb.
>>> 
>>> Where can I get the patch? Should I upgrade to XFree86-4.0.2?
>> 
>> Not yet, we have to write that patch first... :) I'll grab an XFree 
>> source soon.
>> Please test other color depths too: 15bpp and 32bpp.
> 
> 
> 	Hi!
> 
> I've tried to reproduce your problem, but I failed. Rivafb 0.9.2 on 
> Asus V3000 (Riva 128) with nv driver (from XFree-4.0.1g, Debian 
> Woody) works fine for me. Would you like to try out some other XFree 
> versions too?
> 
> Regards:
> 	Ferenc Bakonyi
> 
> 
> 
> 
On a nvidia riva 128 and a stock rh7 with kernel-2.4.1ac4 and above 
which has rivafb-0.9.2 when I startx the desktop is dark. This is in 
16bit and 24bit modes.
I have been told the Riva hardware can be programmed to expect 8 bit or 
6 bit color registers. Rivafb < 0.7.2 used 6 bit color registers, but 
the hw was programmed to 8 bit registers on TNT/TNT2. That was causing 
the so called 'dark console' bug. Rivafb 0.9.2 begins to utilize 8 bits 
on Riva 128, but the XFree86-4.0.1 server uses only 6 bits of them so 
your desktop's brightness is 1/4.

Louis Garcia

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Re: nvidia fb 0.9.0

[Lucca]

I saw earlier posts about this, but never heard any resolution...

Upgrading to a 2.4.2 kernel, my Riva128 based video card behaves strangely
in X; certain colors are dark.  The thing that confuses me is that not All
colors are dark; just some of them.  Redrawing parts of the screen changes
luminosity in those areas.  e.g. in windowmaker, some menus are dark, some
are normal.  A background set by xv is normal, but wmsetbg is dark, etc.

Is this a known problem?  Are there work-arounds?

Matt Backes
sdlucca@mindspring.com