F7 - do_IRQ: 1.193 No irq handler for vector

[D. Hugh Redelmeier]

| From: Emmett Culley <emmett at webengineer.com>

| D. Hugh Redelmeier wrote:

| > Are you refering to
| > https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=225399 ?
| > 
| > I experienced that in 2.6.20-1.2944.fc6 (x86_64)
| > from http://people.redhat.com/cebbert/kernels/
| > (My messages are #64 and #68).

| Yes, except that this is not on a Dell system.

If you look at my reports you will see that I'm not on a Dell either.

| Since my note I haven't had a problem.  Of course, I haven't run Amarok or
| moved any massive directories either :-)  I'll start using Amarok today.
| 
| I also started booting to the xen kernel (2.6.20-2925.9.fc7xen) which is a
| different kernel.  So I'll try Amarock and moving lots of files over the LAN
| with the xen kernel.  I'll probably wait for the next f7 kernel update to try
| the non-xen kernel again.

The problem hit me (in FC6) while playing sound (using mplayer for
watching a recorded TV program).  The fix I usedwas to turn off
irqbalance.  The problem went away.

I also found that another problems went away when I used a Xen kernel
(but my system used more power).

On F7, I'm only using one CPU because of still another problem so this
particular bug won't hit me.

So I'm experiencing three separate kernel bugs.  Great.  At least one
work-around fixes them all: throw away one CPU core.