David Brownell wrote: > Brian S. Stephan wrote: > >>>I've lost track of the details in this particular case, but it sure >>>seemed more like another case of "fast controller operations wedge >>>the device" than anything else. What controller was that desktop >>>using again? >> >> >> The controller on the desktop is UHCI. VIA Technologies, Inc. VT6202. > > You don't seem to be using the EHCI capabilities there, but if you > were I'd suggest you maybe try a different host controller. > > Since you're using it at full speed, the "fast operations wedge > the device" situation is rather unlikely to be happening. But I > had evidence pointing to DMA timing problems with the VT6202, and > maybe they'd also appear with its UHCI support too.
I've tried the device with EHCI enabled and that had the same behavior as without so I thought it best to send the report without it to reduce confusion. Later tonight I can try with EHCI and see if my usb-storage debug looks more or less the same. >> Commands are the same unless something subtle is happening, both systems >> are up-to-date Gentoo installs and I used cp and umount, nothing else. >> >> I noticed this doing something while totally unrelated, the device is a >> bit braindead since it seems to be presenting itself as a USB 2.0 device >> (from dmesg): >> >> usb 2-2: new full speed USB device using address 2 > > That means "bus 2 port 2" using "address 2". > > Nothing to do with USB 2.0 ... if it said "high speed", that > would be a USB 2.0-only feature. :) Oh, I see, my mistake. I know the 2-2 part but saw "full" and immediately thought "as fast as you could possibly get" or something. :) Brian ------------------------------------------------------- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
