[TriLUG] Speaking of weird hardware problems

[Roy Vestal]

Okey doke. Here's the scoop, I found the problem so I felt I should share it
with you. (see a "good" member) :)

I had an Adaptec AHA-1520 (dumb) SCSI ISA PnP controller installed. I
removed it, and VOILA! the keyboard and mouse started working again. I was
able to trace it to a resource conflict with the way this particular m/b
handles ISA PnP and the AHA-1520. I replaced it with an AHA-2940 SCSI PCI
and no problems.

HTH someone.  :)

----- Original Message ----- 
From: "Roy Vestal" <rvestal at trilug.org>
To: <marty.ferguson at pobox.com>; "Triangle Linux Users Group discussion list"
<trilug at trilug.org>
Sent: Thursday, April 22, 2004 1:09 PM
Subject: Re: [TriLUG] Speaking of weird hardware problems


> I did try this before the post.
>
> Yes they kybd and mouse work in rc3, but if i startx in rc3 it looses
> keyboard and mouse. All I have to do is remove the SCSI card and the
> problems go away.
> ----- Original Message ----- 
> From: "Marty Ferguson" <marty at rtmx.net>
> To: "Trilug Discussion" <trilug at trilug.org>
> Sent: Thursday, April 22, 2004 11:23 AM
> Subject: RE: [TriLUG] Speaking of weird hardware problems
>
>
> > Roy,
> >
> > Two more ideas...
> >
> > (1)
> > By "going graphical" you mean that you enter runlevel5, right?
> > You have the X Window System root screen plus other stuff, right?
> > And a non-responsive keyboard and mouse, right?
> > And CTRL-ALT-Fx does not give you a tty console, right?
> >
> > First debug... log in as root at tty1 in runlevel 3.  Run X with no
> > adornment.
> > # X
> >
> > Try to get back to tty1  CTRL-ALT-F1
> > This will isolate the domain of the problems and whether they lie within
> the
> > X Window System/Xserver
> > itself, or with other desktop issues, X/Gnome/KDE session management
etc.
> >
> > (2)
> > ================
> > A follow on suggestion... poke around in /proc/interrupts, iomem,
ioports
> > and such.  You may need to provide some PnP overrides using (yech)
> > the isapnp utility.  I've seen video rob the IRQ2 (cascade)
> > for synch timing.  The AHA-1520 could be inserting itself in
> > somewhere in the IRQ priority.
> >
> > Marty
> >
> > -----Original Message-----
> > From: Roy Vestal [mailto:rvestal at trilug.org]
> > Sent: Thursday, April 22, 2004 10:00 AM
> > To: marty.ferguson at pobox.com; Triangle Linux Users Group discussion list
> > Subject: Re: [TriLUG] Speaking of weird hardware problems
> >
> >
> > I have one PCI card, the NIC. The SCSI is an AHA-1520 ISA PnP card. I've
> got
> > a 2940 around here somewhere, I just didn't want to waist it on a CD
> tower.
> > ----- Original Message -----
> > From: "Marty Ferguson" <marty at rtmx.net>
> > To: "Triangle Linux Users Group discussion list" <trilug at trilug.org>
> > Sent: Thursday, April 22, 2004 10:40 AM
> > Subject: RE: [TriLUG] Speaking of weird hardware problems
> >
> >
> > > Roy,
> > >
> > > Did you try just swapping around PCI cards into different slots?
> > > The enumeration of the IO space is kind of arbitrary.  There are
> > > more sophisticated ways to eliminate these problems, if indeed these
> > > problems are due to PCI bus mastering and priority. But the wrote
> > > approach of just trying different slots untill you get a combination
> > > that works properly is the conventional wisdom.
> > >
> > > Marty
> > >
> > > -----Original Message-----
> > > From: trilug-bounces at trilug.org [mailto:trilug-bounces at trilug.org]On
> > > Behalf Of Roy Vestal
> > > Sent: Thursday, April 22, 2004 9:22 AM
> > > To: Triangle Linux Users Group discussion list
> > > Subject: [TriLUG] Speaking of weird hardware problems
> > >
> > >
> > > Ok, here's a weird one.
> > >
> > > The LVM machine that I mentioned earilier this week, well, yeah, they
> gave
> > > me another old box to replace it. So I moved my nic and good drives
and
> > scsi
> > > card. I loaded FC1 AND WBEL on this thing. Whenever I went graphical,
> I'd
> > > loose the mouse and keyboard.
> > >
> > > After many hours/days of pulling hair, rebuilding the os, removing
> > modules,
> > > unloading services, I started trying hardware. I removed the SCSI card
> > > (AHA-1520) that I hang a CD tower off and it worked!  I now have
> graphical
> > > keyboard and mouse!
> > >
> > > Any suggestions?  BTW, I'm tossing the card.
> > >
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