Alan Stern wrote: > On Fri, 8 Apr 2005, Marco van Loon wrote: >> Plugging the external USB harddisk into another PC running winXP, resulted >> in normal USB 2.0 xfer speeds of about 22Mbyte/sec. Booting that PC >> with the Suse 9.2 live/rescue DVD resulted in similar great speeds. >> >> Which leads me to believe that the USB external case is fine and >> the problem must lie with either the PCI USB card or the interaction >> between it and the Linux kernel... >> >> Is my new PCI USB 2.0 card broken or could it be a fixable software problem? > Without looking through your logs in detail, my guess is that this is a > hardware problem. Probably with your PCI card, although maybe with the > USB cable, connectors, etc.
Well, external USB case plugged into USB2.0 card in PC1 == bad , external USB case plugged in front USB connector of PC2 (so that adds an extra cable inside the PC's case to the mobo) == good Which leads me to believe the cable is most likely OK... ;) I guess I'll have to take the PCI card back to the shop and see if I can swap it... :| > People have had good results with PCI USB cards using Sony controllers. The only PCI USB 2.0 cards available in local shops seem to be ones based on VIA chipsets or NEC chipsets; I wanted to buy a NEC based one, since I read good stories about NEC based cards, but it unfortunately was out of stock at the moment, so I got stuck with this broken VIA based card. :( PS: is it normal that USB2.0/ehci-hcd gets about 10 times as many interrupts in /proc/interrupts as USB1.1/usb-uhci when xfering the same file (tested by doing a "cat file_on_usb_drive >/dev/null" with and without ehci-hcd loaded) or is that another sign my PCI USB 2.0 card is completely fscked up? Ugh more problems during the testing of the USB card's USB2.0/ehci part; the damn thing is definately going back to the shop next week! :( <quote> SCSI disk error : host 2 channel 0 id 0 lun 0 return code = 70000 I/O error: dev 08:01, sector 6099122 SCSI disk error : host 2 channel 0 id 0 lun 0 return code = 70000 I/O error: dev 08:01, sector 6099123 usb.c: USB disconnect on device 00:0e.2-2 address 2 SCSI disk error : host 2 channel 0 id 0 lun 0 return code = 70000 I/O error: dev 08:01, sector 6099124 Device 08:01 not ready. I/O error: dev 08:01, sector 6099125 Device 08:01 not ready. I/O error: dev 08:01, sector 6099283 Device 08:01 not ready. I/O error: dev 08:01, sector 6099028 Device 08:01 not ready. I/O error: dev 08:01, sector 6099284 Device 08:01 not ready. I/O error: dev 08:01, sector 6099539 Device 08:01 not ready. I/O error: dev 08:01, sector 6099028 hub.c: new USB device 00:0e.2-2, assigned address 3 </quote> Marco van Loon ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
