On Sat, 2008-09-20 at 07:33 -0700, nate wrote: > partha chowdhury wrote: > > >> Sep 19 13:13:02 station2 kernel: irq 50: nobody cared (try booting > > with the "irqpoll" option) > > cat /proc/interrupts and see what it says(post output to the list > if you want). > > One thing to try, if something is sharing irq50 with another > device, if that device is an expansion card then try moving > that expansion card to another slot in the system. here's the output : cat /proc/interrupts CPU0 CPU1 0: 4925 1168343 IO-APIC-edge timer 1: 53 328 IO-APIC-edge i8042 8: 0 5 IO-APIC-edge rtc 9: 0 0 IO-APIC-level acpi 12: 0 105 IO-APIC-edge i8042 50: 98133 1867 IO-APIC-level ehci_hcd:usb2 58: 3 86294 IO-APIC-level ohci_hcd:usb3, nvidia 66: 0 0 IO-APIC-level ohci_hcd:usb4 74: 4188 77 IO-APIC-level eth0 82: 35474 110 IO-APIC-level EMU10K1X 90: 1696 111580 PCI-MSI eth1 233: 11081 5907 IO-APIC-level ehci_hcd:usb1, ahci NMI: 0 0 LOC: 1173125 1173126 ERR: 1 MIS: 0 nothing is sharing irq50 so i am a little puzzled > > For the system I am on for reference: > > > CPU0 CPU1 CPU2 CPU3 > 0: 349449438 97827289 129150703 1324419 IO-APIC-edge timer > 4: 22709754 0 0 0 IO-APIC-edge serial > 8: 572455673 15473535 564615318 27739670 IO-APIC-edge rtc > 9: 1 0 0 0 IO-APIC-level acpi > 15: 74017 49259 29528511 0 IO-APIC-edge ide1 > 50: 13430140 0 12041824 0 IO-APIC-level eth2 > 74: 7857068 0 0 0 IO-APIC-level Intel > 82801DB-ICH4 > 169: 142038093 0 0 0 IO-APIC-level > uhci_hcd:usb1, nvidia > 177: 2719957 0 0 0 IO-APIC-level uhci_hcd:usb2 > 185: 0 0 0 0 IO-APIC-level uhci_hcd:usb3 > 193: 65184 0 4501500 0 IO-APIC-level > ehci_hcd:usb4, ohci_hcd:usb7 > 201: 13311819 94167 14802720 262062 IO-APIC-level 3w-xxxx > 209: 19049441 916146 11652498 250590 IO-APIC-level eth0 > 217: 1612506 0 0 0 IO-APIC-level ehci_hcd:usb5 > 225: 3263237 0 0 0 IO-APIC-level ohci_hcd:usb6 > 233: 1810468 3618 29330 424 IO-APIC-level eth1 > NMI: 0 0 0 0 > LOC: 577787080 577787079 577787078 577787077 > ERR: 0 > MIS: 0 > > > Nothing sharing irq 50 on this machine, though irq 169 is being > shared by both my Nvidia video card and a 4-port USB expansion > card. > > The kernel source code describes the error as this: > > * If 99,900 of the previous 100,000 interrupts have not been handled > * then assume that the IRQ is stuck in some manner. Drop a diagnostic > * and try to turn the IRQ off. > * > * (The other 100-of-100,000 interrupts may have been a correctly > * functioning device sharing an IRQ with the failing one) > > > So sounds hardware related. Whether it's the board itself > or an add-in card I'm not sure. If possible remove all > add-in cards that you can to see if the issue goes away. > Also disable all devices in the BIOS that your not using > (secondary IDE ports, serial ports, parallel ports etc), just > to rule those out. i have disabled the only ide port and parallel and serial port in the bios. still i am getting the message. .