With -next-20130204: [ 33.855570] irq 18: nobody cared (try booting with the "irqpoll" option) [ 33.855580] Pid: 0, comm: swapper/4 Not tainted 3.8.0-next-20130204-xeon #20130204 [ 33.855582] Call Trace: [ 33.855585] <IRQ> [<ffffffff810f1076>] __report_bad_irq+0x36/0xe0 [ 33.855600] [<ffffffff810f152a>] note_interrupt+0x1aa/0x200 [ 33.855606] [<ffffffff8101edf2>] ? mwait_idle+0x82/0x1b0 [ 33.855610] [<ffffffff810eed89>] handle_irq_event_percpu+0xc9/0x260 [ 33.855614] [<ffffffff810eef68>] handle_irq_event+0x48/0x70 [ 33.855618] [<ffffffff810f20ba>] handle_fasteoi_irq+0x5a/0x100 [ 33.855624] [<ffffffff810182f2>] handle_irq+0x22/0x40 [ 33.855630] [<ffffffff816e2a9a>] do_IRQ+0x5a/0xd0 [ 33.855636] [<ffffffff816d97ad>] common_interrupt+0x6d/0x6d [ 33.855638] <EOI> [<ffffffff810f8e2a>] ? rcu_eqs_enter_common+0x4a/0x320 [ 33.855646] [<ffffffff8101edf2>] ? mwait_idle+0x82/0x1b0 [ 33.855649] [<ffffffff8101ed99>] ? mwait_idle+0x29/0x1b0 [ 33.855653] [<ffffffff8101f8a6>] cpu_idle+0x116/0x130 [ 33.855658] [<ffffffff816c0c0f>] start_secondary+0x251/0x258 [ 33.855660] handlers: [ 33.855664] [<ffffffff814f98a0>] usb_hcd_irq [ 33.855667] Disabling IRQ #18 >From earlier in the boot log: [ 1.297020] uhci_hcd 0000:00:1d.2: setting latency timer to 64 [ 1.297032] uhci_hcd 0000:00:1d.2: UHCI Host Controller [ 1.297040] uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 4 [ 1.297076] uhci_hcd 0000:00:1d.2: irq 18, io base 0x0000ff40 [ 1.297213] hub 4-0:1.0: USB hub found [ 1.297221] hub 4-0:1.0: 2 ports detected lsusb: ... Bus 004 Device 002: ID 0764:0501 Cyber Power System, Inc. CP1500 AVR UPS Bus 004 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver ... Didn't have this problem with -next-20120125. One of these commits, maybe? next/drivers/usb/core$ git log --oneline next-20130125..next-20130204 -- * 2c2e865 usb: forbid memory allocation with I/O during bus reset e9121a8 Merge remote-tracking branch 'usb/usb-next' 3b2ab2b Revert "usb: Register usb port's acpi power resources" da0aa71 USB: add usb_hcd_{start,end}_port_resume 192fef1 usb: enable usb port device's async suspend. f6cced1 usb: expose usb port's pm qos flags to user space ad493e5 usb: add usb port auto power off mechanism 971fcd4 usb: add runtime pm support for usb port device 88bb965 usb: Register usb port's acpi power resources 54a3ac0 usb: Using correct way to clear usb3.0 device's remote wakeup feature. I didn't see any changes in the drivers/hid/hid-logitech-dj.c or usbhid but maybe it's doing something wrong anyway? I'll open a bugzilla if a bunch more info is necessary. Regards, Peter Hurley -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html