..forgot to Cc linux-usb On Fri 090515, Karl Hiramoto wrote: > Dave Higton wrote: >> On Thursday May 14, Ethan wrote: >> >> >>> I'm having trouble with a 7-port, powered USB hub made by D-Link >>> (model DUB-7). The devices plugged into the hub seem to work fine for [.......] > that most mass storage devices won't work through it, though they >> work fine when connected directly to the computer. I would be >> interested in any insight that this thread might give me. >> >> Dave >> > I thik this hub has the philips ISP1521 chip in it.. It has only one > TT per port. I've notitced if you have all high speed devices, it > seems to work. If it stops working you have to unplug/plug it to reset > it. > > > I think windows has the same issue: > http://www.techtalkz.com/microsoft-device-drivers/243707-usb-problem-when-using-philips-isp1521-based-hub.html Ouch. We are using the same Philips chip in our products (ISP 1521BE) and are experiencing device enumeration problems whenever a full speed device is connected to the hub. E.g. under XP (not so much under Linux) a memory stick is not deteced when plugged in. Sometimes also device removal is not noticed by the OS which gives interesting effects when re-plugging the same device into a different port (XP may blue-screen :) If someone has pointers to discussions about that matter pls let me know. Karl -- Karl Kiniger mailto:karl.kiniger@xxxxxxxxxx Tel: (++43) 7682-3800-710 Voip(GE): 1662 710 Fax: (++43) 7682-3800-47 C: +43 6991 3800 710 - GE Medical Systems Kretztechnik GmbH & Co OHG - Tiefenbach 15 – A-4871 Zipf Landesgericht Wels FN 222387s – UID (VAT-ID): ATU54086108 - DVR: 2111103 – ARA: 12816 Persönlich haftende Gesellschafterin: GE Medical Systems Kretztechnik GmbH Tiefenbach 15 – A-4871 Zipf - Landesgericht Wels FN 218689b -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
