Kubuntu 10.10 not detecting USB Mp3 player

[Guest]

Hi I hope someone can help! I know nothing about Linux so bare with me - I think its a girl thing. I have a Sony Walkman MP3 which connects via USB. I tried to plug in my mp3 player today into my computer to transfer over songs. Normally it mounts automatically - when I plug it in it appears automatically in "Places" However it has stopped working for some reason. I am running Kubuntu 10.10 on my computer and it no longer detects it anymore. When I look up "Removable Devices" under KDE Control Module it comes up under Disconnected Devices under "WALKMAN" When I look up USB Devices its there under EHCI Host Controller. I have tried to see if I can access it through Amarok and that doesn't work either. I have another Linux computer which is used for storage of media & when I use my projector. I plugged my mp3 player into the media Linux computer & it is doing a little better than my computer, it detects the mp3 player for a split second - the Available Devices box pops up and then goes away.

My mp3 seems to working fine, it is connecting with my car stereo which has a USB port.

I did a bit of googling to see if there were any solutions to my problem. I ran "dmesg" and this is what came up when the mp3 player is plugged into the usb.

scsi6 : usb-storage 1-3:1.0
vboxdrv: Trying to deactivate the NMI watchdog permanently...
vboxdrv: Warning: 2.6.31+ kernel detected. Most likely the hardware performance
vboxdrv: counter framework which can generate NMIs is active. You have to prevent
vboxdrv: the usage of hardware performance counters by
vboxdrv: echo 2 > /proc/sys/kernel/perf_counter_paranoid
vboxdrv: Found 2 processor cores.
vboxdrv: fAsync=0 offMin=0x2c8 offMax=0x2bd9
vboxdrv: TSC mode is 'synchronous', kernel timer mode is 'normal'.
vboxdrv: Successfully loaded version 3.2.8_OSE (interface 0x00140001).
warning: `VirtualBox' uses 32-bit capabilities (legacy support in use)
lo: Disabled Privacy Extensions
lo: Disabled Privacy Extensions
usb 1-3: USB disconnect, address 6
usb 1-3: new high speed USB device using ehci_hcd and address 7
scsi7 : usb-storage 1-3:1.0
usb 1-3: USB disconnect, address 7
usb 1-3: new high speed USB device using ehci_hcd and address 8
scsi8 : usb-storage 1-3:1.0
lo: Disabled Privacy Extensions
usb 1-3: USB disconnect, address 8
usb 1-3: new high speed USB device using ehci_hcd and address 9
scsi9 : usb-storage 1-3:1.0
usb 1-3: USB disconnect, address 9
usb 1-3: new high speed USB device using ehci_hcd and address 10
scsi10 : usb-storage 1-3:1.0
usb 1-3: USB disconnect, address 10
usb 1-3: new high speed USB device using ehci_hcd and address 11
scsi11 : usb-storage 1-3:1.0
lo: Disabled Privacy Extensions
usb 1-3: USB disconnect, address 11

[Snowhog]

Re: Kubuntu 10.10 not detecting USB Mp3 player

Are you running Maverick 10.10 as a virtual machine (VM) in VirtualBox? The dmesg snippet you provided indicates that you are.

Over on virtualbox.org, a post concerning Kernel 2.6.32 nmi watchdog problem seems to be identical to your issue, at least as to the indicated NMI watchdog message in dmesg. A suggestion is to add nmi_watchdog=0 as a kernel option to the Grub menu entry. You could also simply try what dmesg is suggesting, which is, from a console, to type:

sudo echo echo 2 > /proc/sys/kernel/perf_counter_paranoid

This is 'temporary' and won't survice a reboot, so it would be a good 'test'. After executing this command, try plugging in your mp3 player as see if it then detects/mounts correctly.