[TriLUG] Speaking of weird hardware problems

Turnpike Man turnpike420 at yahoo.com
Tue Apr 27 10:10:57 EDT 2004


I have an AHA-1520B in my server at home... on a MSI mobo with a CEL 900 cpu,
does fine... amazing the hardware issues we must deal with.  I gave up an
AHA-2940 which apparently works beautifully for someone else in the LUG! :)

thanks for the update and resolution Roy!

laters,
David

--- Roy Vestal <rvestal at trilug.org> wrote:
> 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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