Public bug reported:
I've had an Hp Pavilion dv6308nr with Feisty Fawn Kubuntu (kernel
2.6.22-13). The system boot normaly (noapic nolapic option). Almost all
is working. I can plug and unplug the USB devices without problem. After
a while, I can't plug any USB device anymore. They are not recognized.
The dmesg shows:
[ 200.658071] irq 7: nobody cared (try booting with the "irqpoll" option)
[ 200.658079]
[ 200.658080] Call Trace:
[ 200.658083] <IRQ> [<ffffffff8026aaae>] __report_bad_irq+0x1e/0x80
[ 200.658111] [<ffffffff8026ad93>] note_interrupt+0x283/0x2c0
[ 200.658121] [<ffffffff8026bb8c>] handle_level_irq+0x10c/0x140
[ 200.658130] [<ffffffff8020c6ab>] do_IRQ+0x7b/0x100
[ 200.658134] [<ffffffff80209010>] default_idle+0x0/0x40
[ 200.658140] [<ffffffff8020a3a1>] ret_from_intr+0x0/0xa
[ 200.658143] <EOI> [<ffffffff80422150>] unix_poll+0x0/0xb0
[ 200.658157] [<ffffffff80209039>] default_idle+0x29/0x40
[ 200.658163] [<ffffffff802090c0>] cpu_idle+0x70/0xc0
[ 200.658181]
[ 200.658182] handlers:
[ 200.658185] [<ffffffff88020d20>] (usb_hcd_irq+0x0/0x60 [usbcore])
[ 200.658208] Disabling IRQ #7
I booted with irqpoll option, but the same thing ocurred.
** Affects: ubuntu
Importance: Undecided
Status: New
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USB core crash. Irq7 error
https://bugs.launchpad.net/bugs/151050
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