USB devices aren't recognised

simon_w · 08-31-2005, 07:55 AM

Quote:

Originally posted by Brian1
Looking at earlier reply in this post I seen you had the uhci_hcd module loaded. That is used for USB ver 1.0-1.1 controllers. And ehci_hcd is for 2.0 controllers.
Do you have both type of USB controllers on the board?
If so have you tried all USB plugs?

Brian1

Yes and yes

Quote:

Originally posted by TigerOC
You have enabled the vfat module under file system modules?

Yes

Quote:

Originally posted by AmbroiseF
Here is a little sum-up of the symptoms:
_ usb devices (camera, pen-drive, joypad, scanner, printer) work perfectly if plugged to the machine before booting.
_ usb devices are not recognized if plugged after booting the machine.

I've not tried booting with my pen drive plugged in - I'll try that tomorrow and play around with PnP

Quote:

Originally posted by AmbroiseF
I'm running an Intel Desktop D865GBF motherboard ...

Mine's the micro atx version of that board

AmbroiseF · 08-31-2005, 07:58 AM

Quote:

Mine's the micro atx version of that board

I'm afraid this could be the source of our problem. I googled with linux + D865GBF and didn't like the results much

simon_w · 08-31-2005, 08:08 AM

Quote:

Originally posted by AmbroiseF
I'm afraid this could be the source of our problem. I googled with linux + D865GBF and didn't like the results much

Google search - this thread is second in the list

TigerOC · 08-31-2005, 08:37 AM

It could well be a hardware issue and doesn't seem to be isolated to Linux either. If Intel have used some odd configuration and require unusual drivers then you may have a problem. The Intel site has an updated bios flash dated 17 March 2005 and specific drivers but nothing for usb under Linux.

AmbroiseF · 09-02-2005, 07:18 AM

I found quite a solution, but I'm afraid it won't work for anyone but me.

While googling to find a solution, I found a post, dating September 2004, describing the same problem I had. I just wondered if things would work better with a more recent kernel. So, I updated my kernel to a 2.6.11 i686. (I was running a 2.6.8 i686). While I was at it, I decided to update my Debian from a Sarge 'stable' to a 'testing' version.
To cut a long story short, while updating my system, I discovered weird things regarding my webcam, which is an old Philips Vista Pro. Believe me or not, but since I plug my webcam, I'm losing USB recognition!

Well, as I'm not using my webcam under linux, unplugging it is not a problem. Yet, it's not what you can call a solution.
Maybe some of you also have a rather old USB 1.1 device which can create a bug.
Honeslty, I can't remember if I tried booting my 2.6.8 i686 kernel with my webcam unplugged, so I don't know if my system update helped or not. Maybe an update isn't a bad idea.

Anyway, if anyone knows why my webcam acts so weirdly on 2.6 kernels, please, let me know

TigerOC · 09-02-2005, 09:38 AM

Quote:

Originally posted by AmbroiseF
I discovered weird things regarding my webcam, which is an old Philips Vista Pro. Believe me or not, but since I plug my webcam, I'm losing USB recognition!
Anyway, if anyone knows why my webcam acts so weirdly on 2.6 kernels, please, let me know

I came across the same situation yesterday when a client phoned me about a problem with his Webcam with Win XP. The problem was that the webcam was using a great portion of the usb bandwidth thereby denying usb resources to other usb devices. There is the reason. I have not come across this before but with the number of devices using usb and being plugged into boxes this may become a more serious problem that hardware manufacturers are going to have to address.