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Date:      Mon, 12 Apr 1999 18:19:26 -0400
From:      Randall Hopper <aa8vb@ipass.net>
To:        Marius Bendiksen <mbendiks@eunet.no>
Cc:        multimedia@FreeBSD.ORG
Subject:   Re: Bt848 corruption since upgrading to 3.1. Has DMA code changed?
Message-ID:  <19990412181926.A997@ipass.net>
In-Reply-To: <Pine.BSF.4.05.9904120934070.838-100000@login-1.eunet.no>; from Marius Bendiksen on Mon, Apr 12, 1999 at 09:37:36AM %2B0200
References:  <Pine.BSF.4.05.9904120934070.838-100000@login-1.eunet.no> <199904120535.HAA05298@labinfo.iet.unipi.it> <19990411195808.B13809@ipass.net> <Pine.BSF.4.05.9904120934070.838-100000@login-1.eunet.no>

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Luigi Rizzo:
 |Marius Bendiksen:
 | |Also, the display freezes whenever I move a window over, but I'd assume
 | |that's standard behaviour.
 |
 |this is because fxtv switches from direct video access to using X11
 |calls, and this causes a huge overload on the system (for moving
 |video data).
 |in this respect fxtv should be a bit more adaptive -- when switching to
 |use X11 it should really work one or two frames at a time and try to
 |synchronize with the server.

I don't know why the display would completely freeze.  Even with a very
slow and overloaded bus you should get a frame every now and then.
Switching from direct video to XImages doesn't explain away your behavior.

Randall



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