Re: USB-UHCI problem
From: Jeroen Geilman (nospam_at_notadaptr.nl)
Date: Wed, 27 Aug 2003 23:31:34 +0000
NahtMy ReelName wrote:
> I'm using RedHat distribution of Linux kernel 2.4.20-19.9.
So is that 9.0 ?
> On this and earlier versions of Linux,
> I'm having trouble with sporadic
> loss of my USB MS Intellimouse.
Sporadic loss of intellimouse..hmmm..Altzheimer, then, is it ?
> System burps, mouse is dead, no power to LED, etc. System is otherwise
STEP ONE: Plug the mouse in another system/under another OS/same OS in
another USB slot/ whatever - TEST IT !
Items: one (1) misbehaving rodent, and several (1+) Linux "versions" you
claim are all at fault here ?
Apply Occcam's razor and reconsider, mate...
> However from the messages in the log in response to that action it looks
> like I'm using a howitzer to shoot a chipmonk.
> I just wanted to know:
> (a) is this a known problem?
It is now.
>From the little you tell us we don't even know *where* the problem lies... I
would start by jacking out all USB gear and ONLY trying the mouse, nothing
Compare error messages if any new ones appear...
Post the results of your efforts back.
> (b) where should I report it?
Here, probably ;-)
> (c) is there a definitive fix I can acquire?
Not before you know what the problem is - and you really don't.
Screaming "kernel bug!" as soon as your mouse stops working means you
haven't really understood Linux yet...
That's not to say that it *isn't* a real bug, of course - it's just very,
very, very (very) unlikely...
> I googled and such, and I see the kernel changelog full of usb patches
> and repatches,
> but I really can't tell if it's a known problem or not, and whether
> there's a patch for it or not.
> For reasons that aren't completely clear to me, the frequency of mouse
> drop has increased lately.
> Maybe it just doesn't like my sandisk USB CF reader.
You might have mentioned IN THE FIRST LINE that you have more USB devices...
> Maybe it doesn't like that I appear to have two usb hubs
*every* PC I have ever seen has 2 USB hubs - nothing special about that.
> (there are 4 plugs on the machine attached to two different controller
> chipsets I think,
No you don't - it is most definitely only ONE chipset.
> it's an ASUS motherboard for AMD chips if memory serves).
Memory might serve, but for ACCURACY you might want to...look it up ?
Test. Investigate. Post any more and new info.
We'll look at it.
-- Jeroen Geilman On KNode, thankfully...