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Re: kern/39753: uvideo use crashes -current on a Thinkpad T61
The following reply was made to PR kern/39753; it has been noted by GNATS.
From: "Martin S. Weber" <Ephaeton%gmx.net@localhost>
Subject: Re: kern/39753: uvideo use crashes -current on a Thinkpad T61
Date: Sun, 19 Oct 2008 05:08:15 -0400
Hi there again...
On Sat, Oct 18, 2008 at 04:30:09PM +0000, Jared D. McNeill wrote:
> I'm suspecting an ehci(4) bug. Does the same happen if you disable ehci
> with userconf (boot -c) and use uhci instead? Some cameras are smart
> enough to fallback to compressed mode if attached to a full speed hub,
> so you will probably need 'mplayer -tv outfmt=mjpg ...' to test if it
> will attach.
It still panics, but now the dmesg part contains different messages than
before ("uhci_device_isoc_enter: overflow!"). New photos available at
where crash5 was provoked by disabling ehci and then starting mplayer
-vo null -fps 10 tv:// and crash6 was provoked by disabling ehci and
then starting mplayer -vo null -tv outfmt=mjpg -fps 10 tv:// .
Gonna drop a note on tech-multimedia tomorrow, let's see if we can
wake up some sleeping dogs :)
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