I recently purchased an ASUS Q550LF laptop with Windows 8.1 preinstalled, and subsequently installed Ubuntu 14.04 and Debian 7.6. I use Ubuntu for most tasks, but occasionally have reason to boot Debian. The problem is that Debian won't boot. At some point during the boot process, I receive variations on the following error messages:[time] usb 1-7: unable to read config index 0 descriptor/start: -71[time] usb 1-7: can't read configurations, error -71[time] usb 1-7: unable to read config index 0 descriptor/start: -110[time] usb 1-7: can't read configurations, error -110They repeat indefinitely, and the boot process hangs. I don't have a problem with the touchscreen in Windows or Ubuntu, so I suspect some problem with Debian. When booting Ubuntu the same error message occurs, but eventually the touchscreen is recognized:$ lsusbBus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hubBus 001 Device 006: ID 0bda:0139 Realtek Semiconductor Corp. RTS5139 Card Reader ControllerBus 001 Device 023: ID 04f3:010c Elan Microelectronics Corp. Bus 001 Device 004: ID 13d3:5188 IMC Networks Bus 001 Device 003: ID 8087:07dc Intel Corp. Bus 001 Device 002: ID 046d:c00c Logitech, Inc. Optical Wheel MouseBus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub$ dmesg -k | grep 'usb 1-7'[    1.685457] usb 1-7: new full-speed USB device number 5 using xhci_hcd[    1.702858] usb 1-7: New USB device found, idVendor=04f3, idProduct=010c[    1.702862] usb 1-7: New USB device strings: Mfr=4, Product=14, SerialNumber=0[    1.702864] usb 1-7: Product: Touchscreen[    1.702866] usb 1-7: Manufacturer: ELAN[    1.703007] usb 1-7: ep 0x2 - rounding interval to 64 microframes, ep desc says 80 microframes[    3.822847] usb 1-7: USB disconnect, device number 5[    4.095373] usb 1-7: new full-speed USB device number 7 using xhci_hcd[    6.233335] usb 1-7: unable to read config index 0 descriptor/start: -71[    6.233371] usb 1-7: can't read configurations, error -71[    6.345226] usb 1-7: new full-speed USB device number 8 using xhci_hcd[    8.483093] usb 1-7: unable to read config index 0 descriptor/start: -71[    8.483135] usb 1-7: can't read configurations, error -71[    8.594952] usb 1-7: new full-speed USB device number 9 using xhci_hcd[   10.733650] usb 1-7: unable to read config index 0 descriptor/start: -71[   10.733688] usb 1-7: can't read configurations, error -71[   10.900889] usb 1-7: new full-speed USB device number 10 using xhci_hcd[   13.040048] usb 1-7: unable to read config index 0 descriptor/start: -71[   13.040053] usb 1-7: can't read configurations, error -71[   13.318826] usb 1-7: new full-speed USB device number 11 using xhci_hcd[   13.336201] usb 1-7: New USB device found, idVendor=04f3, idProduct=010c[   13.336202] usb 1-7: New USB device strings: Mfr=4, Product=14, SerialNumber=0[   13.336204] usb 1-7: Product: Touchscreen[   13.336205] usb 1-7: Manufacturer: ELAN[   13.336354] usb 1-7: ep 0x2 - rounding interval to 64 microframes, ep desc says 80 microframes[   15.458888] usb 1-7: USB disconnect, device number 11[   15.788782] usb 1-7: new full-speed USB device number 12 using xhci_hcd[   15.806165] usb 1-7: New USB device found, idVendor=04f3, idProduct=010c[   15.806169] usb 1-7: New USB device strings: Mfr=4, Product=14, SerialNumber=0[   15.806171] usb 1-7: Product: Touchscreen[   15.806173] usb 1-7: Manufacturer: ELAN[   15.806291] usb 1-7: ep 0x2 - rounding interval to 64 microframes, ep desc says 80 microframes[   17.928881] usb 1-7: USB disconnect, device number 12[   18.218822] usb 1-7: new full-speed USB device number 13 using xhci_hcd[   18.236215] usb 1-7: New USB device found, idVendor=04f3, idProduct=010c[   18.236218] usb 1-7: New USB device strings: Mfr=4, Product=14, SerialNumber=0[   18.236221] usb 1-7: Product: Touchscreen[   18.236222] usb 1-7: Manufacturer: ELAN[   18.236328] usb 1-7: ep 0x2 - rounding interval to 64 microframes, ep desc says 80 microframes[   20.359363] usb 1-7: USB disconnect, device number 13[   21.265243] usb 1-7: new full-speed USB device number 14 using xhci_hcd[   21.283198] usb 1-7: New USB device found, idVendor=04f3, idProduct=010c[   21.283203] usb 1-7: New USB device strings: Mfr=4, Product=14, SerialNumber=0[   21.283205] usb 1-7: Product: Touchscreen[   21.283207] usb 1-7: Manufacturer: ELAN[   21.283339] usb 1-7: ep 0x2 - rounding interval to 64 microframes, ep desc says 80 microframes[   23.406502] usb 1-7: USB disconnect, device number 14[   23.687181] usb 1-7: new full-speed USB device number 15 using xhci_hcd[   25.828401] usb 1-7: unable to read config index 0 descriptor/start: -71[   25.828406] usb 1-7: can't read configurations, error -71[   25.993113] usb 1-7: new full-speed USB device number 16 using xhci_hcd[   28.134506] usb 1-7: unable to read config index 0 descriptor/start: -71[   28.134512] usb 1-7: can't read configurations, error -71[   28.298972] usb 1-7: new full-speed USB device number 17 using xhci_hcd[   30.440820] usb 1-7: unable to read config index 0 descriptor/start: -71[   30.440825] usb 1-7: can't read configurations, error -71[   30.552709] usb 1-7: new full-speed USB device number 18 using xhci_hcd[   32.694248] usb 1-7: unable to read config index 0 descriptor/start: -71[   32.694253] usb 1-7: can't read configurations, error -71[   32.970694] usb 1-7: new full-speed USB device number 19 using xhci_hcd[   35.111542] usb 1-7: unable to read config index 0 descriptor/start: -71[   35.111546] usb 1-7: can't read configurations, error -71[   35.276520] usb 1-7: new full-speed USB device number 20 using xhci_hcd[   37.417528] usb 1-7: unable to read config index 0 descriptor/start: -71[   37.417533] usb 1-7: can't read configurations, error -71[   37.582405] usb 1-7: new full-speed USB device number 21 using xhci_hcd[   39.723735] usb 1-7: unable to read config index 0 descriptor/start: -71[   39.723740] usb 1-7: can't read configurations, error -71[   39.888351] usb 1-7: new full-speed USB device number 22 using xhci_hcd[   47.031720] usb 1-7: unable to read config index 0 descriptor/start: -110[   47.031725] usb 1-7: can't read configurations, error -110[   47.271826] usb 1-7: new full-speed USB device number 23 using xhci_hcd[   47.289529] usb 1-7: New USB device found, idVendor=04f3, idProduct=010c[   47.289534] usb 1-7: New USB device strings: Mfr=4, Product=14, SerialNumber=0[   47.289536] usb 1-7: Product: Touchscreen[   47.289538] usb 1-7: Manufacturer: ELAN[   47.289666] usb 1-7: ep 0x2 - rounding interval to 64 microframes, ep desc says 80 microframesI can't disable the touchscreen in the BIOS, and most of the purported solutions I've encountered when researching the problem don't work. I'm not even sure how I would go about solving the problem. If someone could point me in the right direction, I would appreciate it. Thanks in advance!
ELAN Touchscreen on Ubuntu 14.04 and Debian 7.6
debian;boot;usb;touch screen