Comment 1 for bug 112775

The problem seems to disappear if the kernel option noapic is added. Now an other problem shows up instead. After a while the kernel says the following:

[ 2358.262653] irq 7: nobody cared (try booting with the "irqpoll" option)
[ 2358.262659]
[ 2358.262660] Call Trace:
[ 2358.262663] <IRQ> [<ffffffff802bd285>] __report_bad_irq+0x35/0x90
[ 2358.262698] [<ffffffff802bd500>] note_interrupt+0x220/0x280
[ 2358.262720] [<ffffffff8809e465>] :usbcore:usb_hcd_irq+0x25/0x60
[ 2358.262730] [<ffffffff802be243>] handle_level_irq+0xe3/0x140
[ 2358.262734] [<ffffffff8026223c>] call_softirq+0x1c/0x28
[ 2358.262742] [<ffffffff80270189>] do_IRQ+0x89/0x100
[ 2358.262746] [<ffffffff8026e860>] default_idle+0x0/0x50
[ 2358.262751] [<ffffffff80261631>] ret_from_intr+0x0/0xa
[ 2358.262754] <EOI> [<ffffffff802316b0>] unix_poll+0x0/0xa0
[ 2358.262769] [<ffffffff8026e889>] default_idle+0x29/0x50
[ 2358.262775] [<ffffffff8024b14b>] cpu_idle+0x9b/0xd0
[ 2358.262782] [<ffffffff8027a435>] start_secondary+0x4d5/0x4f0
[ 2358.262811]
[ 2358.262812] handlers:
[ 2358.262815] [<ffffffff8809e440>] (usb_hcd_irq+0x0/0x60 [usbcore])
[ 2358.262827] Disabling IRQ #7

The usb mouse and keyboard work really bad after this kernel message.

The mouse and keyboard start to work normally again if the ehci_hcd module is removed. I guess that the ochi_hcd module takes over all usb functionality in that case. I can modprobe ehci_hcd module again and the system works normal.