interrupt issue, storm on parallel port, 5.4

Roland Smith rsmith at
Wed Aug 3 07:11:26 GMT 2005

On Tue, Aug 02, 2005 at 09:41:09PM -0400, dave wrote:
> Hello,
>     I've got a printserver that has an hp deskjet printer attached via
> parallel port. I just got an email with the following message:
> Interrupt storm detected on "irq7: lpt0"; throttling interrupt source
> I've checked lpt0 in dmesg and this error didn't come up then, do i have to
> worry about this? This is on a 5.4-p1 system, if so is there a fix?

In short, put the parallel port in polling mode. See for details.

R.F.Smith ( Please send e-mail as plain text.
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