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Date: Mon, 05 Feb 2001 14:00:00 -0500
From: Louis Garcia <louisg00@bellsouth.net>
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To: Bakonyi Ferenc <fero@drama.obuda.kando.hu>
CC: linux-kernel@vger.kernel.org
Subject: Re: nvidia fb 0.9.0 (0.9.2?)
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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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