Re: serial interrupts on 2.2.7

Richard B. Johnson (root@chaos.analogic.com)
Wed, 19 May 1999 16:16:31 -0400 (EDT)


On Tue, 18 May 1999, christian wrote:

> Running 2.2.7 here, I often run into this problem: my serial ports, though
> detected perfectly by setserial, fail to show interrupts in
> /proc/interrupts. This happens with my soundcard as well, occasionally
> (though right now it does have an interrupt - none for the serials
> though).
>
> Is this a known problem?
>
The serial devices have to be 'open' in order for them to use interrupts:

do `cat /dev/ttyS0` and look at /proc/interrupts from another virtual
terminal.

Cheers,
Dick Johnson
***** FILE SYSTEM WAS MODIFIED *****
Penguin : Linux version 2.2.6 on an i686 machine (400.59 BogoMips).
Warning : It's hard to remain at the trailing edge of technology.

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