URN Logo
UNIX Resources » Linux » Linux Forum » Gentoo Help » Page.10 » USB problems
announcement The content of this page is collected from Linux Forum, All copyrights and other associated rights are reserved by the original authors of the articles.
Resources
China Linux Forum(finished)
Linux Forum(finished)
FreeBSD China(finished)
linuxforum.com
  LinuxForum General Chat
  Linux Advocacy
  LinuxForum Polls
  Introductions
  Linux Kernel Support
  Patch Management
  Development Release
  Linux Programming
  Linux Security
  Linux Software
  Linux Hardware Problems
    Linux Video Problems
    Linux Sound Problems
  Linux Networking Support
  Linux Printing Support
  Linux Human Interface Devices Support
  Linux Data Storage Support
  Linux Applications Support
  Linux Installation Support
  Linux Laptops Support
  Linux Motherboard, Chipsets, CPU, Memory
  Miscellaneous
  Debian Linux Support
  Ubuntu Linux Support
  LiveCD Discussions
  Gentoo Linux Support
  Mandrake Linux Support
  Redhat / Fedora Linux Support
  Slackware Linux Support
  SuSE Linux Support
  CentOS Linux Support
  Linux Web Servers
  Linux DNS Servers
  Linux Database Servers
  Linux Email Servers
  Linux FTP Servers
  Linux Squid Proxy Server
  Linux Samba Help
  Linux cPanel Help
  Linux Ensim Help
  Linux Plesk Help
  Linux Webmin / Usermin Help
  Qmail Toaster Help
  Linux Games
  Windows Game Emulation
  Linux Discussions
  General Linux Discussions
  Red Hat Linux Discussions
  More Red Hat Linux Discussions
  Mandrake Linux Discussions
  Slackware Linux Discussions
  SuSE Linux Discussions
  Debian Discussions
  Samba Help
  Linux Security
  Linux Networking
  Gentoo Help
  Operating System Rant Forum
  Hardware Rants
   
USB problems
Subject: USB problems
Author: ken    Posted: 2005-06-25 16:46:08    Length: 2,189 byte(s)
[Original] [Print] [Top]
I'm (still) running a 2.4 kernel on my primary computer (trying to figure
how to safely upgrade to 2.6) and all of a sudden now NO USB devices work.
My Asus A7V8X-X motherboard has usb 2.0 on it (don't know if it is a 'high
power' connection though).  I was able to talk to my Epson USB inkjet
printer and plug my digital camera and usb flash drive in as well to
download files.  Now nothing works.  Nothing shows up
in /proc/bus/usb/devices either (or is this only a 2.6/udev thing?).
I think it all started when I tried plugging my new iPod into the usb on the
computer.  Is it possible that plugging in a high power usb device could
blow up the interface?
The iPod works fine on a windows XP machine, and on
another linux box with a high power usb pci card under kernel 2.6.11 (with
some weirdness though).  (The other machine is not my primary computer, I
built it to record and rip cd's, and run mythtv.)  I could go to the
ratshack and get another pci usb2.0 card to 'replace' the motherboard usb
controller, but first maybe I'll upgrade the kernel and use udev (which
works on the other linux box).  Sure wish I knew for sure if I have a hw or
software problem.

The linux box that works with the ipod has some weirdness.  I set up a udev
rule to create an /dev/ipod simlink to /dev/sdaN.  It mostly shows up
as /dev/sda1, but sometimes as /dev/sda2!  (fat formated ipod).  Also if
after syncing the ipod with gtkpod I umount /dev/ipod and then
eject /dev/ipod, the eject command issues an error, but the ipod DOES
disconnect and the 'NO' glyph disapears to be replaced with the main menu
screen. (ipod mini).  I can't reconnect the ipod to the commputer from the
same usb socket, but a DIFFERENT one works!  Also even though my /etc/fstab
line for the ipod has the 'noauto' modifier, most of the time (first time
mouting after booting the computer) it WILL automount on plugin.

enough rant.  Anybody been there before with any of this?

[Original] [Print] [Top]
Subject: USB problems
Author: J.O. Aho    Posted: 2005-06-26 09:41:32    Length: 3,698 byte(s)
[Original] [Print] [Top]
ken wrote:
QUOTE
I'm (still) running a 2.4 kernel on my primary computer (trying to figure
how to safely upgrade to 2.6) and all of a sudden now NO USB devices work.
My Asus A7V8X-X motherboard has usb 2.0 on it (don't know if it is a 'high
power' connection though).  I was able to talk to my Epson USB inkjet
printer and plug my digital camera and usb flash drive in as well to
download files.  Now nothing works.  Nothing shows up
in /proc/bus/usb/devices either (or is this only a 2.6/udev thing?).

Did you compile the usb support into or as modules?
Did you disable the usage of tarball in /etc/conf.d/rc ?


QUOTE
I think it all started when I tried plugging my new iPod into the usb on the
computer.  Is it possible that plugging in a high power usb device could
blow up the interface?

If the interface is already broken, I guess it could be possible.


QUOTE
The iPod works fine on a windows XP machine, and on
another linux box with a high power usb pci card under kernel 2.6.11 (with
some weirdness though).

Compare the kernel .config with the two kernels and see what you missed to enable.


QUOTE
The linux box that works with the ipod has some weirdness.  I set up a udev
rule to create an /dev/ipod simlink to /dev/sdaN.  It mostly shows up
as /dev/sda1, but sometimes as /dev/sda2!  (fat formated ipod).

This is usually the case when you already have mounted another usb mass
storage device or have a SCSI interface.


QUOTE
after syncing the ipod with gtkpod I umount /dev/ipod and then
eject /dev/ipod, the eject command issues an error, but the ipod DOES
disconnect and the 'NO' glyph disapears to be replaced with the main menu
screen. (ipod mini).

Don't think the eject was made to unmount devices that can't be ejected, I
would try to just unmount the device (from the desktop icon or from an terminal).


QUOTE
I can't reconnect the ipod to the commputer from the
same usb socket, but a DIFFERENT one works!  Also even though my /etc/fstab
line for the ipod has the 'noauto' modifier, most of the time (first time
mouting after booting the computer) it WILL automount on plugin.

The unmount didn't go well and the device is still in the mtab, you need to
force an unmount on the device. Disable the automount feature in the kernel.


  //Aho

[Original] [Print] [Top]
« Previous thread
Problem with pkgconfig and glib
Gentoo Help
Page. 10
Next thread »
2.6.12 and sbp2
     

Copyright © 2007 UNIX Resources Network, All Rights Reserved.      About URN | Privacy & Legal | Help | Contact us
Powered by FreeBSD    webmaster: webmaster@unixresources.net
This page created on 2007-08-01 13:18:20, cost 0.045607089996338 ms.