Re: kern/39753: uvideo use crashes -current on a Thinkpad T61

["Martin S. Weber" <Ephaeton%gmx.net@localhost>]

The following reply was made to PR kern/39753; it has been noted by GNATS.

From: "Martin S. Weber" <Ephaeton%gmx.net@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
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
 
  http://ayaken.net/crash5-bt1.jpg
  http://ayaken.net/crash5-bt2.jpg
  http://ayaken.net/crash5-dmesg1.jpg
  http://ayaken.net/crash5-dmesg2.jpg
  http://ayaken.net/crash5-dmesg3.jpg
  http://ayaken.net/crash5-dmesg4.jpg
  http://ayaken.net/crash5-dmesg5.jpg
  http://ayaken.net/crash5-dmesg6.jpg
  http://ayaken.net/crash5-dmesg7.jpg
  http://ayaken.net/crash5-dmesg8.jpg
  http://ayaken.net/crash6-bt1.jpg
  http://ayaken.net/crash6-dmesg1.jpg
 
 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 :)
 
 Regards,
 
 -Martin