kbdmux oddity ?

[Emil Mikulic]

On Wed, May 10, 2006 at 12:03:36PM +1000, Emil Mikulic wrote:
> I'm seeing a similar (but different?) problem - I get an interrupt storm
> every time I hit Caps Lock or Num Lock, or flip VTs in text mode.  If
> XMMS is running, the music skips.
> 
> Normally, if I'm hitting letter keys, I never see any irq1: atkbd0
> interrupts.  If I bounce on the Caps Lock, I can get it as high as
> 72/sec.
> 
> Running top(1), I can get system time up to about 50% by pounding away
> at Caps Lock.  Normal typing doesn't affect the system time much, it
> fluctuates between 0% and 1%.
> 
> This is with 7-CURRENT, GENERIC, on x86, from yesterday.  And it's on a
> Dell GX280 with a USB keyboard.  I've seen similar issues on a Dell
> Poweredge SC430, again with a USB keyboard.

Data point:

If I add hint.atkbd.0.disabled="1" to /boot/loader.conf,
I no longer see this problem.

--Emil