Re: PCI IRQ conflict causing X-Windows bug?

Tom Eastep (eastep@loc1.tandem.com)
Thu, 14 Jan 1999 17:08:21 +0000


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Benjamin Redelings I wrote:
>
> Hi, this is in both versions 2.0 and 2.1/2.2. Recently,if X windows is
> loaded immediately on startup it locks up. Sometimes if I do an SAK
> with alt-sysreq-k it recovers and I am able to log in, but I can't
> switch back and forth between text mode and graphics mode.
>
> Further, today I noticed that I could move the mouse in X only if I
> pressed a key, although the keystrokes went nowhere that I could see.
> That stopped (I think) when I turned off gpm on boot.
>
> Anyway, I noticed that both my video card and Realtek 8029 are list as
> having IRQ 12 by both linux and by the motherboard BIOS before boot. If
> I disablemy USB controller, then both are found at IRQ 9. That is
> rather spooky.

If you have a RIVA128-based video card, this is a known problem with
XF86_SVGA; it doesn't like to share the ireq. I understand that the
problem is corrected in the 3.3.3 version of the server.

-Tom

-- 
Tom Eastep
Compaq Computer Corporation
Enterprise Computing Group
Tandem Division
tom.eastep@compaq.com
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