On Sat, 5 May 2007, etoom etoom wrote: > Hi people, > > I'm unable to write files on my Playstation Portable (PSP), the device > disappears suddenly and if the device is in a middle of any IO the > operation stalls for a minute then it gives me the message "Unable to > copy, I/O error". > > I'm running Ubuntu 6.10 with kernel 2.6.17-11-generic on an AMD > Athlon 64 Processor, and using libusb 4.4.4. > > I tried coping the same file on a 32bit machine (running Ubuntu 6.06 > with 2.6.15-23 kernel and libusb 4.4.4) and everything went well. > > > When I plug my PlayStation-P it gets automatically mounted and dmsg > shows this message: > > [ 4960.433875] usb 2-3: new high speed USB device using ehci_hcd and address > 21 > [ 4960.507329] usb 2-3: unable to read config index 0 descriptor/start > [ 4960.507334] usb 2-3: can't read configurations, error -75 > [ 4960.571586] usb 2-3: new high speed USB device using ehci_hcd and address > 22 > [ 4960.582778] usb 2-3: device descriptor read/8, error -75 > [ 4960.649416] usb 2-3: device descriptor read/8, error -75
These -75 errors are rather unusual. Usually people in this sort of situation report -71 errors, which indicate a low-level hardware problem in the USB data transfer (bad cables, misbehaving hub, something like that). It's not clear what would cause the -75. The best approach for tracking down your problem might be to use the usbmon facility. Instructions on how to set it up are in the kernel source file Documentation/usb/usbmon.txt. While you're at it you should also turn on CONFIG_USB_DEBUG. Alan Stern ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
