serial8250: too much work for irq 19

[Richard Shaw]

On Sun, Sep 19, 2010 at 12:07 PM, Kam Leo <kam.leo at gmail.com> wrote:
> On Sun, Sep 19, 2010 at 5:28 AM, Richard Shaw <hobbes1069 at gmail.com> wrote:
>>
>> I installed F13 on my Dad's computer last night and ran into this
>> issue. The install itself went perfectly. I'm not sure what's
>> different between what services get run during install and regular
>> startup, but I can boot to the recovery option of the install DVD and
>> chroot to the system drive no problem.
>>
>> When I boot normally everything starts fine and then somewhere around
>> the avahi daemon starting the system slows to a CRAWL, the abrt daemon
>> fails to start but otherwise continues.
>>
>> Checking dmesg I see the following repeated probably 1000 times:
>>
>> serial8250: too much work for irq 19
>>
>> I've googled this and the fact that my Dad's hardware is current (Acer
>> dual core Pentium D) I don't think it actually has a 8250 UART. It
>> could be a serial port that's not being detected correctly or an
>> internal modem. I'll have to get him to check if he actually has
>> one...
>>
>> Anyone have any experience troubleshooting things like this?
>
> If the UART is integrated into the motherboard disable it in the BIOS or
> reassign the IRQ. If the UART is a add-on check to see if you can change the
> IRQ via moving or adding a jumpoer.

I had already tried disabling both com ports in the bios to no effect.
He checked today and did have some kind of Motorola based internal
modem. I told him to yank it and see if that helps since he doesn't
have a land lne anyway. We'll see.

Thanks,
Richard