Review your favorite Linux distribution.
Go Back > Forums > Linux Forums > Linux - Newbie
User Name
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!


  Search this Thread
Old 02-08-2005, 01:02 AM   #1
LQ Newbie
Registered: Jan 2005
Posts: 16

Rep: Reputation: 0
Question USB Ports on laptop - help ! ^^

I have a laptop with FC3 and 4 USB ports.

Only one USB port works. And it works for mounting flash drive and usb devices like a mouse.

If i plug my devices into any other USB port nothing happens.

Can someone give me any clues on how to solve this.

Old 02-08-2005, 02:19 AM   #2
Registered: Dec 2004
Location: Phoenix, Arizona, USA
Distribution: Debian, RedHat, ???
Posts: 56

Rep: Reputation: 15
On my desktop machine, Debian Woody with 2 usb ports on the motherboard, and a card with 2 more usb ports running a 2.4.26 kernel, I had to add the kernel modules needed into /etc/modules, so that they were loaded at boot time.

My /etc/modules looks like this:
Your system (FC3) may have a different place to list modules to be loaded at boot time, I'm not sure, as I've never used FC3.

I do know, however, that the kernel has to know how to talk with a particular device, including usp ports, and as such needs either the drivers compiled into a monolithic kernel (not the usual way), or compiled as a module, to be loaded as needed. Kernel modules are quite speciffic to hardware. For instance, a 3com 3c509 driver will work well for that board, but won't work at all for a NE2000, even though both are ethernet adaptors.

You may have to determine what usb ports (chip set / board manufacturer and modle) you actually have, then look in /lib/modules/your-kernel-version/kernel/drivers/usb (or similar) for the driver for your usb ports, then add the drivers to /etc/modules or whatever. you can test by doing an insmod for the module you have. If you do not have an already compiled module in /lib/modules for your ports, you may end up compileing a kernel with the required drivers.

As always, read the man pages for insmod and modprobe, and be sure to read the README in the top level of your kernel sources. also there is doccumentation in /usr/src/your-linux-sources/Doccumentation that might help you further

Hope this helps,


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
USB Ports dudeman41465 Linux - Hardware 1 10-12-2005 03:18 AM
USB 2.0 ports detected as USB 1.1 on Fedora Core 3 vbvamsi Linux - Hardware 1 10-09-2005 07:26 PM
What are the USB ports? Jongi Linux - Hardware 7 08-29-2003 12:48 PM
four USB ports thanko Linux - Software 2 02-20-2002 11:52 AM
USB Ports danwhite1 Linux - Software 1 09-06-2001 12:12 PM > Forums > Linux Forums > Linux - Newbie

All times are GMT -5. The time now is 02:21 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration