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#1 2009-11-14 12:28:00

phar
Member
Registered: 2009-10-20
Posts: 14

USB Plug&Play and automounting issue(s)?

Using KDE 4.3.3 on an Advent 4211c (aka MSI Wind U100)

Hi Everyone,
My USB devices have started playing up after doing a pacman -Syu.
Below are the observed symptoms.

1. No 'plug & play' functionality. e.g. Plugging in a USB mouse requires reboot to get it to work.
2. After rebooting, USB drives (both flash and SCSI) appear mounted but show as empty (0 items) in Dolphin (KDE filemanager) when I know they are not.

Was functioning perfectly before upgrading last night.

Any assistance greatly appreciated!

***UPDATE***
Problem appears to affect webcam as well. uvcvideo module is loaded as suggested here: http://wiki.archlinux.org/index.php/MSI_Wind_U100 but webcam not detected by cheese etc.

This feels like a udev problem to me. Any ideas anyone?

Last edited by phar (2009-11-14 17:41:38)


In order to make an apple pie from scratch, you must first create the universe. - Carl Sagan

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#2 2009-11-14 14:41:30

MadTux
Member
Registered: 2009-09-20
Posts: 553

Re: USB Plug&Play and automounting issue(s)?

Can you check what got updated? There was an update to HAL this week, which may cause such problems. How do you start KDE, i.e. what is in your .xinitrc? There have been reports that the new HAL behaves better if the DE/WM is started by using "ck-launch-session".

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#3 2009-11-14 14:46:16

phar
Member
Registered: 2009-10-20
Posts: 14

Re: USB Plug&Play and automounting issue(s)?

MadTux wrote:

what is in your .xinitrc? There have been reports that the new HAL behaves better if the DE/WM is started by using "ck-launch-session".

I use KDM as a login manager, and I believe that KDM uses ck-launch-session by default. When I do a ck-list-sessions I get:

Session1:
    unix-user = '1000'
    realname = '(null)'
    seat = 'Seat1'
    session-type = ''
    active = TRUE
    x11-display = ':0'
    x11-display-device = '/dev/tty7'
    display-device = ''
    remote-host-name = ''
    is-local = TRUE
    on-since = '2009-11-14T12:08:39.727206Z'
    login-session-id = ''

which indicates that KDE is started using ck-launch-session.


In order to make an apple pie from scratch, you must first create the universe. - Carl Sagan

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#4 2009-12-03 23:00:15

Codewalker
Member
Registered: 2009-12-03
Posts: 3

Re: USB Plug&Play and automounting issue(s)?

To everyone who suffers from USB problems in MSI Wind U100 and clones:

uvcvideo module which operates the camera causes ehci_hcd to halt, which leads to the usb automount problems described above. This needs a kernel fix, so we have to wait for it.

The workaround for now is to disable uvcvideo module in /etc/rc.conf like this: MODULES=( !uvcvideo )
This will turn off the camera off course but allow other usb devices to work

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#5 2009-12-04 16:08:44

phar
Member
Registered: 2009-10-20
Posts: 14

Re: USB Plug&Play and automounting issue(s)?

Codewalker wrote:

To everyone who suffers from USB problems in MSI Wind U100 and clones:

uvcvideo module which operates the camera causes ehci_hcd to halt, which leads to the usb automount problems described above. This needs a kernel fix, so we have to wait for it.

The workaround for now is to disable uvcvideo module in /etc/rc.conf like this: MODULES=( !uvcvideo )
This will turn off the camera off course but allow other usb devices to work

Posting to confirm that the workaround works. Thanks Codewalker!

This mailing list post has more information.

Last edited by phar (2009-12-04 16:13:02)


In order to make an apple pie from scratch, you must first create the universe. - Carl Sagan

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#6 2009-12-05 11:30:31

ljukee
Member
From: Czech Republic
Registered: 2007-07-29
Posts: 22

Re: USB Plug&Play and automounting issue(s)?

I have the same problem with MSI Wind 100 US edition.

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#7 2009-12-06 22:59:42

VegaKy
Member
Registered: 2009-11-27
Posts: 2

Re: USB Plug&Play and automounting issue(s)?

im sorry but who have enable web cam in u100?
tricks in wiki do not help....
work only i tying modprobe after booting kernel, if post uvcvideo in rc.conf web cam does not start (

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#8 2009-12-06 23:27:11

bagheera
Member
Registered: 2009-06-13
Posts: 84

Re: USB Plug&Play and automounting issue(s)?

I confirm that bug. I have the same issue. None USB device plugged after system is fully operational worked. I only worked, if it was connected before system start.

There's is some bug related to webcam anyway.
Info from messages.log, when i press fn+f6 to enable webcam:

Dec  8 00:39:08 msi kernel: atkbd.c: Unknown key pressed (translated set 2, code 0xee on isa0060/serio0).
Dec  8 00:39:08 msi kernel: atkbd.c: Use 'setkeycodes e06e <keycode>' to make it known.
Dec  8 00:39:08 msi kernel: atkbd.c: Unknown key released (translated set 2, code 0xee on isa0060/serio0).
Dec  8 00:39:08 msi kernel: atkbd.c: Use 'setkeycodes e06e <keycode>' to make it known.

Last edited by bagheera (2009-12-06 23:30:13)


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#9 2009-12-08 11:35:02

sigmund
Member
From: Milano, Italy, EU
Registered: 2009-12-06
Posts: 50

Re: USB Plug&Play and automounting issue(s)?

Codewalker wrote:

To everyone who suffers from USB problems in MSI Wind U100 and clones:

uvcvideo module which operates the camera causes ehci_hcd to halt, which leads to the usb automount problems described above. This needs a kernel fix, so we have to wait for it.

The workaround for now is to disable uvcvideo module in /etc/rc.conf like this: MODULES=( !uvcvideo )
This will turn off the camera off course but allow other usb devices to work

Thanks Codewalker, the workaround does its job on my Acer Aspire 9815WKMi as well (it should be an OrbiCam by Logitech).


Definitely moving to GNU/Linux made me trust Computer Science once again.
Definitely moving to Arch made me enjoy and understand GNU/Linux once again.

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