Comment 23 for bug 843709

I'm pretty sure that this bug is causing my network to fail on me every 5 minutes to 5+hours. I can restart it by disabling and re-enabling networking with the network manager, but the entry in dmesg is always the same:

[ 4163.037770] irq 18: nobody cared (try booting with the "irqpoll" option)
[ 4163.037777] Pid: 0, comm: swapper Tainted: P C 3.0.0-12-generic #20-Ubuntu
[ 4163.037779] Call Trace:
[ 4163.037781] <IRQ> [<ffffffff810cf8ad>] __report_bad_irq+0x3d/0xe0
[ 4163.037793] [<ffffffff810cfcd5>] note_interrupt+0x135/0x180
[ 4163.037797] [<ffffffff810cdcc9>] handle_irq_event_percpu+0xa9/0x220
[ 4163.037807] [<ffffffff810cde8e>] handle_irq_event+0x4e/0x80
[ 4163.037808] [<ffffffff810d0604>] handle_fasteoi_irq+0x64/0xf0
[ 4163.037811] [<ffffffff8100c252>] handle_irq+0x22/0x40
[ 4163.037813] [<ffffffff815f3d2a>] do_IRQ+0x5a/0xe0
[ 4163.037815] [<ffffffff815ea413>] common_interrupt+0x13/0x13
[ 4163.037816] <EOI> [<ffffffff813496cb>] ? intel_idle+0xcb/0x120
[ 4163.037820] [<ffffffff813496ad>] ? intel_idle+0xad/0x120
[ 4163.037823] [<ffffffff814ab062>] cpuidle_idle_call+0xa2/0x1d0
[ 4163.037826] [<ffffffff8100920b>] cpu_idle+0xab/0x100
[ 4163.037829] [<ffffffff815b803e>] rest_init+0x72/0x74
[ 4163.037831] [<ffffffff81ad0c2b>] start_kernel+0x3d4/0x3df
[ 4163.037834] [<ffffffff81ad0388>] x86_64_start_reservations+0x132/0x136
[ 4163.037836] [<ffffffff81ad0140>] ? early_idt_handlers+0x140/0x140
[ 4163.037838] [<ffffffff81ad0459>] x86_64_start_kernel+0xcd/0xdc
[ 4163.037839] handlers:
[ 4163.037847] [<ffffffffa0040aa0>] rtl8169_interrupt
[ 4163.037848] Disabling IRQ #18

I'm running an i5-2500k with a Z68 chipset. If more logs or troubleshooting will help, I'm happy to provide what I can.