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From: Knut Petersen <Knut_Petersen@t-online.de>
To: Gareth Lester-Olivier <gareth@calcom.co.za>
Cc: linux-fbdev-devel@lists.sourceforge.net
Subject: Re: Cyblafb driver
Date: Sat, 29 Jul 2006 13:30:15 +0200	[thread overview]
Message-ID: <44CB46C7.5040908@t-online.de> (raw)
In-Reply-To: <20060725200032.BE69A2BEC@ctb-mesg5.saix.net>

Hi Gareth!

Well, the quality of the video signal is not optimal at 1024x768-32, but
distortions should be hardly noticeable.

Try to keep margins small, this will help a bit (reduced dot clock).

Do you really need 32bpp? The cyberblade/i1 is much faster at 16bpp.

Using a 16bpp mode instead of an otherwise identical 32bpp mode reduces the
internal clock frequency to 50%, thus you will see a _dramatic_ 
improvement in
video signal quality.

What exactly do you mean by "glitches"? I suspect that you see some 
flickering
(fast changes in brightness). Correct?

Have a look at the mainboard. Have a look at2 
http://en.wikipedia.org/wiki/Capacitor_plague.
Are your caps ok? I had to replace some caps on an epia board some weeks 
ago ;-(

>   on a EPIA (duh) with 128mb PC100, P3 Celeron 1.1ghz.
>
>
Don´t know that model, tell me more.

cu,
 Knut


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      reply	other threads:[~2006-07-29 11:26 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-07-25 20:00 Cyblafb driver Gareth Lester-Olivier
2006-07-29 11:30 ` Knut Petersen [this message]

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