Hello: This problem occurs in openSUSE 13.2 i586 (fresh install from DVD) on a new computer (new hardware). My Epson Perfection V37 USB scanner does not work. After switching the scanner on, at the first time it is recognized immediately: scanimage -L device `epkowa:interpreter:003:006' is a Epson Perfection V37 flatbed scanner But the following times the command hangs for long time: scanimage -L ... long-long-time one-two minutes device `epkowa:interpreter:003:006' is a Epson (unknown model) flatbed scanner Note that the scanner is not recognized properly this time. The same happens if I try to use application, eg xsane. Firts time the sanner works OK, next time xsane startup hangs, and eventually gives an error message: "Failed to open device `epkowa:interpreter:003:006': Error during device I/O." I have been using this scanner family with the epkowa driver in different openSUSE versions on different systems but never before had any problem with it. Google search resulted in two possibly cause of the issue: 1. Due to a bug linux kernel cannot handle USB3 devices correctly. 2. The system cannot wake the USB device from sleep. dmesg shows indications of 1.: [ 7029.415988] usb 3-3: new high-speed USB device number 6 using xhci_hcd [ 7029.582753] usb 3-3: New USB device found, idVendor=04b8, idProduct=014a [ 7029.582761] usb 3-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 7029.582767] usb 3-3: Product: EPSON Perfection V37/V370 [ 7029.582771] usb 3-3: Manufacturer: EPSON [ 7029.583082] usb 3-3: ep 0x81 - rounding interval to 128 microframes, ep desc says 255 microframes [ 7029.583093] usb 3-3: ep 0x2 - rounding interval to 128 microframes, ep desc says 255 microframes See the last two lines. According to some sources this explains the problem. But I never found an answer how I could fix the issue and use the scanner normally. Any idea? Thanks, Istvan -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org