Hi all, since the release of Linux 2.6.25, my USB DVD writer does not work anymore. With kernel 2.6.24 or previous, when I turn on the device and start k3b, the dmesg says: usb 5-2: new high speed USB device using ehci_hcd and address 3 usb 5-2: configuration #1 chosen from 1 choice Initializing USB Mass Storage driver... scsi2 : SCSI emulation for USB Mass Storage devices usbcore: registered new interface driver usb-storage USB Mass Storage support registered. usb-storage: device found at 3 usb-storage: waiting for device to settle before scanning usb-storage: device scan complete scsi 2:0:0:0: CD-ROM TSSTcorp CD/DVDW TS-H552U US07 PQ: 0 ANSI: 0 Driver 'sr' needs updating - please use bus_type methods sr0: scsi3-mmc drive: 7x/48x writer cd/rw xa/form2 cdda tray sr 2:0:0:0: Attached scsi CD-ROM sr0 sd 0:0:0:0: Attached scsi generic sg0 type 0 sd 1:0:0:0: Attached scsi generic sg1 type 0 sr 2:0:0:0: Attached scsi generic sg2 type 5 end_request: I/O error, dev sr0, sector 0 Buffer I/O error on device sr0, logical block 0 end_request: I/O error, dev sr0, sector 0 Buffer I/O error on device sr0, logical block 0 cdrom: This disc doesn't have any tracks I recognize! usb 5-2: reset high speed USB device using ehci_hcd and address 3 usb 5-2: reset high speed USB device using ehci_hcd and address 3 usb 5-2: reset high speed USB device using ehci_hcd and address 3 usb 5-2: reset high speed USB device using ehci_hcd and address 3 But the empty dvd-r medium is correctly recognised and I can burn it. With kernel 2.6.25 or above: [ 95.176013] usb 5-2: new high speed USB device using ehci_hcd and address 4 [ 95.308002] usb 5-2: configuration #1 chosen from 1 choice [ 95.308002] scsi3 : SCSI emulation for USB Mass Storage devices [ 95.308002] usb 5-2: New USB device found, idVendor=0409, idProduct=0056 [ 95.308002] usb 5-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 95.308002] usb 5-2: Product: USB 2.0 IDE Bridge [ 95.308002] usb 5-2: Manufacturer: NEC Electronics [ 95.308002] usb 5-2: SerialNumber: 3669000295 [ 95.308002] usb-storage: device found at 4 [ 95.308002] usb-storage: waiting for device to settle before scanning [ 100.308195] usb-storage: device scan complete [ 100.313676] scsi 3:0:0:0: CD-ROM TSSTcorp CD/DVDW TS-H552U US07 PQ: 0 ANSI: 0 [ 100.592003] sr0: scsi3-mmc drive: 7x/48x writer cd/rw xa/form2 cdda tray [ 100.592003] sr 3:0:0:0: Attached scsi CD-ROM sr0 [ 100.592003] sr 3:0:0:0: Attached scsi generic sg2 type 5 [ 114.789037] cdrom: This disc doesn't have any tracks I recognize! [ 132.320028] usb 5-2: reset high speed USB device using ehci_hcd and address 4 [ 152.044009] cdrom: This disc doesn't have any tracks I recognize! [ 159.400037] usb 5-2: reset high speed USB device using ehci_hcd and address 4 [ 178.993227] cdrom: This disc doesn't have any tracks I recognize! [ 186.144037] usb 5-2: reset high speed USB device using ehci_hcd and address 4 [ 204.808030] cdrom: This disc doesn't have any tracks I recognize! [ 212.212035] usb 5-2: reset high speed USB device using ehci_hcd and address 4 It continues to give these usb reset messages, so i can't burn the dvd. This appens with all version of k3b I could try and with wodim via command-line too. I asked for help on the debian mailing-list with no luck. I hope you can help me. Mattia -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
