On Tue, 23 Mar 2004, Ari Pollak wrote:

> I'd like to note that I'm seeing the same behavior under gphoto2 with my 
> Canon S400 on a Thinkpad T41. I'm positive this is related to my other 
> thread about problems with my USB mouse (the dmesg output from this guy 
> is pretty similar to the mouse problem) and possibly the Lucent OHCI 
> PCMCIA controller. I'd be happy to test any patches you can come up 
> with, since it seems like USB has totally hosed itself in recent kernels.

Here's something you could do.  Just testing the mouse problem, not any of 
the other more complicated things.  When you unplug the mouse and start 
getting those suspend_hc/wakeup_hc messages, capture a task status dump 
(Alt-SysRq-t).  That might be of use.

Another thing to try.  Before unplugging the mouse, try to rmmod either or 
both of its drivers: usbmouse or hiddev.

And by the way, it's not true that USB has totally hosed itself recently.  
The reality is that some fundamental bugs are finally getting fixed and 
doing so has exposed problems in other places, primarily usbfs and user 
programs.

Alan Stern



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