Welcome to the most active Linux Forum on the web.
Go Back > Forums > Linux Forums > Linux - Hardware
User Name
Linux - Hardware This forum is for Hardware issues.
Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?


  Search this Thread
Old 05-25-2005, 11:08 AM   #1
LQ Newbie
Registered: May 2005
Posts: 6

Rep: Reputation: 1
No USB at all (/proc/bus/usb/devices missing)


I spent much time trying to solve this problem myself and searching the Web for possible answers, to no avail.
I hope someone here can help me.

I installed Mandrake 10.2 (Mandriva 2005), kernel 2.6.11, on my Averatec 3150H laptop. Everything works fine but for the fact that I have no USB working at all (the same install on a different computer resulted in USB working fine). Here is the essential of what I have checked/done so far:

1) USB on the same machine works fine in both Window$ and Knoppix and worked fine on a previous Mandrake 9.2 install;

2) hotplug cries because /proc/bus/usb/devices is missing; indeed, I have /proc/bus/usb, but no /proc/bus/usb/devices; a manual mount ("mount -t usbfs none /proc/bus/usb") will do nothing (not even an error message); also tried with "-t usbdevfs";

3) the output of "lspci -v | grep HCI" is the following:
00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 80) (prog-if 00 [UHCI])
00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 80) (prog-if 00 [UHCI])
00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 80) (prog-if 00 [UHCI])
00:10.3 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 82) (prog-if 20 [EHCI])

4) I have usbcore, ehci-hcd and uhci-hcd modules loaded (also tried with ochi-hcd, just in case); the output of "lsmod | grep usb" is the following:
usbcore 106008 3 ehci-hcd,uhci-hcd

5) I can't find any abvious error message in /var/log/messages or /var/log/syslog that could be related to this problem; at boot time the system indicates that USB filesystem is mounted successfully (like I said I get no errors with a manual mount)

6) I have tried the following boot options: acpi=off, noapic

7) I have tried disabling alsa and sound services (I have read that sometimes those could conflict with USB)

8) I have tried reinstalling Mandrake 10.2 a second time from scratch.

So, at this stage I just don't know what else I can do. I consider myself as an advanced Linux user, but as a user only I don't know much about fine hardware configuration or conflict finding/troubleshooting.

Thanks for any help or suggestion anyone could bring.
Old 05-26-2005, 04:07 AM   #2
Registered: Dec 2002
Location: In front of a computer
Distribution: UPS, DHL, FedEx
Posts: 466

Rep: Reputation: 38
I don't have /proc/bus/usb/devices either but my usb bits work fine.

Try getting the latest hotplug.


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
where is /proc/bus/usb/devices???? mrchaos Linux - Software 4 12-04-2005 10:26 PM
MDK 10.2: No USB at all (/proc/bus/usb/devices missing) shrodi Mandriva 5 07-01-2005 11:28 AM
question on /proc/bus/usb/devices file ryan_a_hH Linux - Hardware 2 01-21-2005 01:49 PM
USB scanner not in /proc/bus/usb/devices psweetma Linux - Hardware 4 02-25-2004 04:47 PM
/proc/bus/usb/devices missing shellcode Linux - General 11 02-24-2004 10:15 PM > Forums > Linux Forums > Linux - Hardware

All times are GMT -5. The time now is 12:08 PM.

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
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration