On Tue, 7 Dec 2004, James Pattinson wrote: > I have tried your suggestion. I'm running 2.6.9 with gentoo-r6 patches, > and I get the following when I connected the display:
> usb 2-1.3: new low speed USB device using address 3 > usb 2-1.3: skipped 1 descriptor after interface > usb 2-1.3: new device strings: Mfr=0, Product=1, SerialNumber=0 > usb 2-1.3: default language 0x0409 > usb 2-1.3: control timeout on ep0in > usb 2-1.3: Product: Apple Cinema HD Display > usb 2-1.3: hotplug > usb 2-1.3: adding 2-1.3:1.0 (config #1, interface 0) > usb 2-1.3:1.0: hotplug > usbhid 2-1.3:1.0: usb_probe_interface > usbhid 2-1.3:1.0: usb_probe_interface - got id > drivers/usb/input/hid-core.c: HID probe called for ifnum 0 > drivers/usb/input/hid-core.c: report descriptor (size 55, read 55) = 05 > 80 09 01 a1 01 15 00 26 ff 00 75 08 85 02 96 01 01 09 02 b2 02 01 05 82 > 95 02 85 10 09 10 b1 02 25 04 85 d6 09 d6 b1 02 25 07 85 e7 b1 02 26 ff > 00 85 e4 81 02 c0 > > When query /proc/bus/usb/devices I get the hang, but the only message > appearing in the syslog is the control timeout on ep0in one. After plugging in the USB connection, but before looking at /proc/bus/usb/devices or doing anything else to cause a hang, try getting a stack dump with Alt-SysRq-T. The information about the khubd process will be especially interesting. You can also try doing that after "cat /proc/bus/usb/devices" hangs. Then both khubd and your cat process will be of interest. Alan Stern ------------------------------------------------------- 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://productguide.itmanagersjournal.com/ _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
