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Problem with Serial port if X is running

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Sergey Gribov

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Feb 24, 2001, 9:48:47 PM2/24/01
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Hi,

I have Dell Inspiron 8000 with Debian linux, kernel 2.4.2.
I have the following strange problem:
If I trying to synchronize Pilot using serial port (using pilot-xfer)
without X running it's working just fine, but if I run X it failes
in the middle with timeout and 'weird packets' problem.

It seems, that serial port working fine without X and having problems
when the X is running...

Any ideas?

Thanks in advance,

steve

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Feb 25, 2001, 12:32:09 PM2/25/01
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What video card do you have? what are the COM port, base IO and IRQ for the
serial port? It used to be that some modems would have a conflict with some
graphics cards because these cards used extra memory normally allotted for
the COM port (a COM port), but only in high-res graphics modes. Thus the modem
would work outside of X, but if X is running, the modem would mysteriously
freeze. I would suggest trying to move to another COM port / IRQ combo and
see if that helps. It's a long shot, but it may work.
--
Steve S.

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st...@CLOTHESmailaps.org
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Sergey Gribov

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Feb 25, 2001, 2:10:30 PM2/25/01
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> >I have Dell Inspiron 8000 with Debian linux, kernel 2.4.2.
> >I have the following strange problem:
> >If I trying to synchronize Pilot using serial port (using pilot-xfer)
> >without X running it's working just fine, but if I run X it failes
> >in the middle with timeout and 'weird packets' problem.
> >
> >It seems, that serial port working fine without X and having problems
> >when the X is running...
> >
> >Any ideas?
> >
> >Thanks in advance,
>
> What video card do you have? what are the COM port, base IO and IRQ for the
> serial port? It used to be that some modems would have a conflict with some
> graphics cards because these cards used extra memory normally allotted for
> the COM port (a COM port), but only in high-res graphics modes. Thus the modem
> would work outside of X, but if X is running, the modem would mysteriously
> freeze. I would suggest trying to move to another COM port / IRQ combo and
> see if that helps. It's a long shot, but it may work.
Serial uses COM1, 03f8-03ff and IRQ 4, it's uart 16550C-compatible ...
It doesn't seems, that anybody else is using IRQ4...
Video controller: ATI Mobility M4 with 32Mb

I've tried to change COM1 to COM2 but without success :(

Any ideas?

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