Playing DVD interfers with modem?

[Mikkel L. Ellertson]

Ric Moore wrote:
> 
> Lordy Rick, I'm an old BBS sysop from back when. I have a RS Robotics
> external with all the bells and whistles in hardware, so I'm connected
> only by a serial cable. I'm gonna check out your suggestion about the
> IRQ though. I sure miss setting pin jumpers. Devices generally stayed
> where you put 'em, IRQ wise. Here's /proc/interrupts
> 
<----------------------[snip]--------------->
> 
> I don't see IRQ 3 or 4 listed for serial port. Do I have to gink with
> uugetty or set serial? Is that the right place to look?? Ric
> 
One thing I have noticed is that the IRQs will not show up unless 
something is actually using the device. For serial ports, the IRQ 
will not show up until something opens the port. Something on the 
line of if there isn't anything that is going to process it, the IRQ 
is disabled, and does not show up in the list.

I don't know if it will help, but you may want to check with 
setserial to see if it is detecting the correct UART type. You can 
also try adjusting the FIFO settings. If the driver is treating the 
UART as if it does not have a FIFO, or if the FIFO settings are 
wrong, then the serial port will generate too many interrupts. It is 
possible that it is generating one interrupt per character 
sent/received.

Mikkel
-- 

   Do not meddle in the affairs of dragons,
for thou art crunchy and taste good with Ketchup!

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