when i used mandrake 10.0 my usb devices (printer, scanner)worked perfectly, but with 10.1 and 10.2 beta they don`t. i am getting some message that says disabling irq# 21 right after connecting my devices. (my motherboard has kt400a chipset with integrated usb 2.0)





exact message is Message from syslogd@localhost at Sat Feb 26 15:54:04 2005 ...
localhost kernel: Disabling IRQ #21

I've never received a message like that in 10.0 or 10.1. (Glad you're using 10.1, by the way--far superior to 10.0, which was still basically a trial version).

I think I would experiment with going into BIOS and disabling IRQ21 off the bat and see what happens. It almost surely won't solve the problem, but chances are you might get a different error message that might shed some light. For some reason I set all my IRQ's to "monitor" not long ago and I believe that solved some problem, but it wasn't like yours.

P. S. I belong to Club Mandrake, and made a brief search there but came up with nothing that looked relevant to me.

I also had the USB probs with many 10.1... at issue was my hp photosmart 7150 USB printer. cups would not recognize it. Even after manually setting the appropriate printer settings, no dice. A user on a mandy specific Linux users forum, http://www.linuxloader.com , I was informed that many ppl were having probs with various USB periphials even after the same periphial worked fine on 10.0 . While there are indeed updated software libraries which allow you to run various pieces of software (for instance, I would love to run dar and Kdar on my mandy box, the RPM's are set for mandy 10.1 and there are no RPM's for 10.0). While I am very green on compiling from source and endeavor everyday to learn the ins and outs of source compliling. I practice those matters on my spare box, and consider my box which connects to the internet to be 'mission critical' because it is my gateway to the internet where i find answers regarding how to fix the screw-ups on my spare test-box. so i need the printer services on my main box. I am going to try 10.2 and see if the USB probs (at least with regards to my printer) have been resolved.

Best Regards, CHOW

Very sensible, says I! If I had two setups, I hope I would follow your example.

As to the USB problems, luckily I haven't had any with Mdk 10.1, but as to printers--I forgot to turn my printer on before I installed 10.1, and as a result had no printer in the installation once it was finished. That didn't bother me as I almost never print anything and my old laser printer's processing unit needs replacing so I can't print more than a page or two without smudges all over, anyway.

But one day I needed to print a page or two, so I decided to add my printer. It was NOWHERE near as easy as under previous versions of Mandrake. Instead of a long list of almost every printer ever heard of, I got a list of about ten printers, two or three of which I'd never seen reference to anywhere, and not including my own--whereas my brand (Panasonic) had been represented not only by my specific model, but dozens of others, in previous lists.

I finally got it done by finding a site on the Web that offered Linux-specific generic drivers that would work for Panasonic. But it was no easy matter.

It made me wonder what in the world had happened over at Mandrake between v. 9.2 and 10.1.

I can believe it. I've had to fight soooo hard to get my WUSB11 v2.8 network adapter working and now that I get the driver installed, the keyboard hangs!

Do you suppose it would do any good to install an inexpensive USB hub?

I bought one for $19 at OfficeMax, a Targus hub meant for laptops but of course just as good on any machine. I've seen hubs for $5 or so on the Web (but shipping almost always raises Web prices).

After I installed the hub and attached the cables for my digital camera, Palm Tungsten E organizer, Logitech wireless mouse, and APC back-up power supply, every USB device gave fewer failure-to-connect problems. I used to commonly have to try several times before my camera or Palm would get a USB connection, but with the hub I just about never have to anymore.

I use a hub on my linux boxes only because when i swap between my primary machine and my testbed machine, all i have to do is switch one cable and all my usb peripherals migrate the the active box. I am not sure, but i think if linux recognizes your peripherals in their various usb ports connected to your box, they should work fine if you connect the peripherals to a hub and attach the hub to your box. at least it worked well for me.

Best Regards, CHOW