From: John Zielinski <grim@undead.cc>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Sergey Vlasov <vsu@altlinux.ru>,
Linux Frame Buffer Device Development
<linux-fbdev-devel@lists.sourceforge.net>
Subject: Re: Radeonfb hsync fudge factor?
Date: Wed, 24 Dec 2003 15:52:57 -0500 [thread overview]
Message-ID: <3FE9FCA9.3070107@undead.cc> (raw)
In-Reply-To: <Pine.GSO.4.58.0312241310520.1638@waterleaf.sonytel.be>
Geert Uytterhoeven wrote:
>On Wed, 24 Dec 2003, Sergey Vlasov wrote:
>
>
>>Probably this fudge factor was needed for some early chips?
>>
>>
>
>Yep, Mach64 needs one (but atyfb doesn't take care of it yet). So if you switch
>between depths, the display may shift horizontally. I guess this is due to
>different lengths of the dataflow paths for different color depths.
>
>
How many cards handled by radeonfb need it? That way we can add a
fudge or nofudge driver option. Or put it in the card database if the
numbers are roughly equal.
I need to see if that's what's causing the sync problems with my friends
HDTV....
John
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next prev parent reply other threads:[~2003-12-24 20:53 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-23 23:43 Radeonfb hsync fudge factor? John Zielinski
2003-12-24 1:42 ` Benjamin Herrenschmidt
2003-12-24 9:18 ` Sergey Vlasov
2003-12-24 12:12 ` Geert Uytterhoeven
2003-12-24 20:52 ` John Zielinski [this message]
2003-12-24 21:00 ` Sergey Vlasov
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