I've just finished a round of testing and seem to have worked around the
problem. Here's my findings:
-ACPI had no effect (ill or good) on the uhci usb.
-Adding an SIS OHCI PCI card worked but the following was true:
+ After the first reboot I had left the line
"alias usb-controller uhci"
in /etc/modules.conf. Then I modprobed ohci to detect the pci card
and it found it but didn't fix the KVM problem. Changing the line to
"alisa usb-controller usb-ohci"
and then rebooted, made everything very happy. Keyboard and both
mice work great.
This seems to point to one of three things:
-The linux uhci driver is buggy
or
-There are slight differences (incompatibilities/"features") between
different UHCI chips that the linux driver doesn't handle properly or
know about
or
-Certain UHCI chips are buggy and windows knows about these "features"
and works around them so it works under linux (a la: New IBM ThinkPads
and ACPI)
On Tue, 2003-01-07 at 13:20, Ti Leggett wrote:
> I just got one of the Belkin 4 ports (F1DS104U) and am having some
> problems. A quick search through the mailing lists revealed others
> having the same problems. I might have some information to shed further
> light (or shadow) on the problem.
>
> Like everyone else I'm having problems with one of my linux boxes
> working with this, though all the windows boxes work fine. The
> difference is, one of my linux boxes works flawlessly. Here's the
> details. The linux box that doesn't work is an AMD Athlon 1GHz running
> on a VIA chipset motherboard. I've tried both uhci.o and usb-uhci.o with
> equal results as everyone else (Belkin hub detected but none of the
> devices, timeout messages, etc). At the lilo prompt, the keyboard works
> fine, so the BIOS recognizes it at lease. I've tried using and not using
> HIDBP as well.
>
> Now, the linux box that works grand is my IBM ThinkPad T30 (P4 1.8GHz,
> Intel 860 chipset). I've been using the uchi.o but usb-uhci.o would
> probably do just as well. Currently I've only been using HIDBP but I bet
> without it would work just as well. When I plug it in to the same port
> as the machine not working (or any other port for that matter), it
> detects first the Belkin hub, then the keyboard, then the first mouse,
> then the trackball, then the 7 port hub connected into the belkin as
> well. It gets everything great. Keyboard and mouse works flawlessy.
>
> The differences here, obviously, are the chipset and the fact that my
> laptop has a ps/2 keyboard and mouse already set up. I'm not sure if
> having this legacy key/mouse makes a difference.
>
> Two things I'll be trying will be:
> -using ACPI on the failing machine (don't think this will have an
> effect)
> -starting the machine with a ps/2 key/mouse to see if that affects
> anything
> -putting a pci usb card and seeing if it works from that
>
> What are the feelings on this. Am I the first person to have gotten a
> linux box to work with the Belkin KVM?
--
Ti Leggett <[EMAIL PROTECTED]>
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