Re: PCMCIA adapters. Question on IRQs

["David Talkington" <dtalk soltec net>]

Please turn off HTML in your mail program.

I will repost this, as I do periodically whenever this comes up; advice from
David Hinds, found on usenet some time ago.
-d
------------------------
From: David Hinds <dhinds zen stanford edu>
Subject: Re: PCMCIA Setup
Date: Friday, February 05, 1999 3:27 PM

Roger Liew (rliew enteract com) wrote:
: In article <36bacb0f 0 nemo idirect com>, Paul Wilson <ulik idirect com>
wrote:
: >However, I do not know how to check all my IRQs.  Is there a way to get a
: >list of all IRQs and what they are set to?  If so, please respond with
the
: >details.
: >
: You can try
: cat /proc/interrupts
: if you have the proc filesystem in your kernel.

No, this is actually not helpful for diagnosing interrupt conflicts.
The PCMCIA drivers know enough to not allocate an interrupt that is
already in use by another driver.  They have no way of knowing if an
interrupt is wired to a device that does not have a Linux driver, and
this is the classic interrupt conflict problem.

You need to try systematically excluding interrupts in
/etc/pcmcia/config.opts.  It is also helpful if you can check your
hardware configuration (BIOS setup menus) to see if you can figure out
which interrupts are allocated for sound cards, CD-ROM's, etc which
may not have Linux drivers loaded.  Exclude the interrupt that is
currently being allocated for the modem card, 'kill -HUP' cardmgr,
reinsert the card, and see if that helps... repeat for a few different
interrupts.

-- Dave