[SOLVED] USB Devices No Longer Designated by UUID

My USB devices (external disks, flashdrives, etc) have always been mounted using their UUID. I have grsync processes set up using this method which I have used for years. Suddenly, my devices are being shown by label (/dev/sdb1, etc), and now no processes using the UUIDs will work without being changed to use the label.
As far as I know, I haven't done anything, so I guess an update has caused this, but I have no idea exactly when it happened, or how to get back to UUID identifiers.
I would be very grateful for any advice on how to begin to resolve this.
Many thanks in advance.
Last edited by myrlin (2012-07-04 08:40:50)

Berbae, your post gave me a clue where to start, and I have now identified the problem.
I am using Openbox, and had added "spacefm -desktop" to the autostart folder in order to manage wallpaper, etc. This resulted in it running in the background, and the mounting application it uses by default (pmount?) is not showing UUIDs. I removed this from the autostart folder, and everything was back to normal, so it's a spacefm issue which I need to resolve.
Although I haven't fully fixed the problem yet, I know where it lies, so I am marking this as "solved"
Once again, thank you providing me with a starting point.

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Last edited by dawid.loubser (2013-04-26 16:57:42)

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Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
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Dial Attempts = 3
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Phone=*99**1#
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Password = umts
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then
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I noticed that the Defaults section makes a difference, because the one I just edited in above avoids some delay in dialing.
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Message was edited by: macjack

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Hello all,
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External USB storage no longer recognized by kernel [SOLVED]

If I plug in an external USB thumb drive, my system no longer sees it.
-gdisk and fdisk do not see it
-gparted cannot see it
-thunar cannot see it
I have a USB mouse and keyboard that work just fine. Here is my dmesg. You can see in the last line that something detected me plugging in the USB thumb drive, but that's it. Is this something with udev or ?
[ 110.596683] usb 1-3: new high-speed USB device number 4 using ehci_hcd
I found this thread but my problem is different from the op's.
I run the linux-ck package from the AUR but as a sanity check, installed the ARCH kernel package and this problem exists under both:
$ uname -r
3.2.6-2-ARCH
Last edited by graysky (2012-02-19 00:44:26)

I know this thread is marked solved, but I have the exact same problem - I just installed the linux-ck package from the AUR (running linux-ck version 3.2.11-1), alongwith the nvidia-ck package. The kernel was compiled with the localmodcfg and BFQ options enabled in the pkgbuild. Now when I plug in an external drive, dmesg detects it, but no device nodes are created under /dev.
There is nothing wrong with the drives (happens with multiple drives) - and they are mounting fine under the stock kernel. lsusb also shows the drive present. I thought this might be an issue with needing to rebuild initramfs using mkinitcpio, but the available hooks seem to include all the usual ones from the stock kernel, nor does the wiki article mention needing to do such a thing. Any ideas?
EDIT: I didn't notice in the OP that the problem persisted with both the -ck kernel and the stock kernel. In my case, it only persists with the -ck kernel - and this happens on two different computers.
Last edited by manzdagratiano (2012-03-16 06:40:27)

[SOLVED] Default audio device no longer works after reboot

After today's reboot, the audio device no longer works. E.g., VLC says:
Audio output failed:
The audio device "default" could not be used:
No such file or directory.
This is the console log:
[0x1394138] main libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
Fontconfig warning: "/etc/fonts/conf.d/50-user.conf", line 9: reading configurations from ~/.fonts.conf is deprecated.
[0x7fac180069c8] pulse audio output error: PulseAudio server connection failure: Connection refused
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
[0x7fac180069c8] alsa audio output error: cannot open ALSA device "default": No such file or directory
[0x7fac180069c8] jack audio output error: failed to connect to JACK server
[0x7fac180069c8] oss audio output error: cannot open audio device (/dev/dsp)
[0x7fac180069c8] main audio output error: no suitable audio output module
[0x7fac40fa4db8] main decoder error: failed to create audio output
[0x7fac180069c8] pulse audio output error: PulseAudio server connection failure: Connection refused
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
[0x7fac180069c8] alsa audio output error: cannot open ALSA device "default": No such file or directory
[0x7fac180069c8] jack audio output error: failed to connect to JACK server
[0x7fac180069c8] oss audio output error: cannot open audio device (/dev/dsp)
[0x7fac180069c8] main audio output error: no suitable audio output module
[0x7fac41055118] main decoder error: failed to create audio output
The strange thing is that the sound card does in fact work; e.g. the sound test for "HDA Intel PCH", the first entry in my KDE Audio Settings, works. But the entry "default" does not and I suppose that is also the device that VLC is complaining about.
I've tried blacklisting the HDMI driver and switched to the other audio output modules in VLC. I've also checked I'm still member of the "audio" group.
Edit:
P.S. Solved this myself. I had a USB-to-MIDI adapter cable plugged in during boot, which seems to have been causing these problems. I suppose systemd thought it was a USB sound card? I was wondering why dmesg said something about USB sound when the computer doesn't have any USB sound devices. Hardware detection epic fail. Although I guess the cable counts as a MIDI device at least, so in a way it's correct.
So it looks like I'll always have to unplug the MIDI cable before rebooting.
Last edited by Morn (2012-11-23 19:24:00)

You might get. Ore assistance in a different forum area. Maybe try Using pad. This is the forum for iPhoto for iOS.

[SOLVED] Virtualbox list usb devices is empty.

I moved from virtualbox_bin(AUR) to virtualbox(community), and remove /proc/bus/usb entry in /etc/fstab, after that the usb doesn't work. I can check 'Enable USB 2.0 (EHCI) Controller' in Virtualbox settings, but can't find any available usb devices.
$ pacman -Qs virtualbox
local/virtualbox 4.1.22-1
Powerful x86 virtualization for enterprise as well as home use
local/virtualbox-additions 4.1.22-1
The official all-in-one VirtualBox Guest Additions ISO/CD image
local/virtualbox-ext-oracle 4.1.22-1
Oracle VM VirtualBox Extension Pack
local/virtualbox-hook 2.1-1
mkinitcpio hook to compile the virtualbox modules
local/virtualbox-modules 4.1.22-1
Kernel modules for VirtualBox
local/virtualbox-source 4.1.22-1
VirtualBox kernel modules source
$ VBoxManage list usbhost
Host USB Devices:
<none>
$ ls /dev/usbbox
ls: cannot access /dev/usbbox: No such file or directory
$ groups
log kvm network video audio optical storage users vboxusers guten input libvirt davfs2 virtftp
$ lsusb
Bus 001 Device 002: ID 0424:2513 Standard Microsystems Corp. 2.0 Hub
Bus 001 Device 003: ID 05ac:8509 Apple, Inc. FaceTime HD Camera
Bus 002 Device 002: ID 0424:2513 Standard Microsystems Corp. 2.0 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 004: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)
Bus 001 Device 005: ID 05ac:0252 Apple, Inc. Internal Keyboard/Trackpad (ANSI)
Bus 002 Device 003: ID 05ac:8242 Apple, Inc. IR Receiver [built-in]
Bus 002 Device 004: ID 1a40:0101 Terminus Technology Inc. 4-Port HUB
Bus 001 Device 008: ID 05ac:821a Apple, Inc. Bluetooth Host Controller
Bus 002 Device 005: ID 046d:c05a Logitech, Inc. Optical Mouse M90
Bus 002 Device 008: ID 0951:1624 Kingston Technology DataTraveler G2 4GB Pen Drive
Bus 002 Device 007: ID 413c:2003 Dell Computer Corp. Keyboard
Last edited by GutenYe (2012-09-17 12:38:58)

I am having the same problem and have tried "everything" and still cannot get it to work.
calpoly@arch:~$ cat /etc/group | grep vboxusers
vboxusers:x:108:calpoly,root
calpoly@arch:~$ lsusb
Bus 004 Device 003: ID 045e:0745 Microsoft Corp. Nano Transceiver v1.0 for Bluetooth
Bus 004 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 05ac:12a0 Apple, Inc. iPhone 4S
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 003: ID 046d:c52f Logitech, Inc. Unifying Receiver
Bus 003 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
calpoly@arch:~$ sudo pacman -Qs virtualbox
local/virtualbox 4.3.6-3
Powerful x86 virtualization for enterprise as well as home use
local/virtualbox-guest-dkms 4.3.6-3
VirtualBox Guest kernel modules sources
local/virtualbox-guest-modules 4.3.6-4
Guest kernel modules for VirtualBox
local/virtualbox-guest-utils 4.3.6-3
VirtualBox Guest userspace utilities
local/virtualbox-host-modules 4.3.6-4
Host kernel modules for VirtualBox
local/virtualbox-host-modules-lts 4.3.6-5
Host kernel modules for VirtualBox
calpoly@arch:~$ sudo VBoxManage controlvm windowSeven usbattach 609c101d-ef6a-401a-ad15-306f3e7bc8ae
VBoxManage: error: The USB device with UUID {00000010-0030-0000-90f9-0560b57f0000} is not currently attached to the host
VBoxManage: error: Details: code NS_ERROR_INVALID_ARG (0x80070057), component USBProxyService, interface IHost, callee nsISupports
VBoxManage: error: --------
VBoxManage: error: Could not load the Host USB Proxy service: VERR_NOT_FOUND
VBoxManage: error: Details: code Unknown Status 0x4005 (0x4005), component Host, interface IHost
VBoxManage: error: Context: "AttachUSBDevice(usbId.raw())" at line 973 of file VBoxManageControlVM.cpp
calpoly@arch:~$ sudo VBoxManage showvminfo windowSeven
Name: windowSeven
Groups: /
Guest OS: Windows 7
UUID: 609c101d-ef6a-401a-ad15-306f3e7bc8ae
Config file: /root/VirtualBox VMs/windowSeven/windowSeven.vbox
Snapshot folder: /root/VirtualBox VMs/windowSeven/Snapshots
Log folder: /root/VirtualBox VMs/windowSeven/Logs
Hardware UUID: 609c101d-ef6a-401a-ad15-306f3e7bc8ae
Memory size: 2048MB
Page Fusion: off
VRAM size: 128MB
CPU exec cap: 100%
HPET: off
Chipset: piix3
Firmware: BIOS
Number of CPUs: 2
PAE: off
Long Mode: off
Synthetic CPU: off
CPUID overrides: None
Boot menu mode: message and menu
Boot Device (1): DVD
Boot Device (2): HardDisk
Boot Device (3): Network
Boot Device (4): Floppy
ACPI: on
IOAPIC: on
Time offset: 0ms
RTC: local time
Hardw. virt.ext: on
Nested Paging: on
Large Pages: off
VT-x VPID: on
VT-x unr. exec.: on
State: powered off (since 2014-02-11T12:16:18.000000000)
Monitor count: 1
3D Acceleration: off
2D Video Acceleration: off
Teleporter Enabled: off
Teleporter Port: 0
Teleporter Address:
Teleporter Password:
Tracing Enabled: off
Allow Tracing to Access VM: off
Tracing Configuration:
Autostart Enabled: off
Autostart Delay: 0
Default Frontend:
Storage Controller Name (0): IDE
Storage Controller Type (0): PIIX4
Storage Controller Instance Number (0): 0
Storage Controller Max Port Count (0): 2
Storage Controller Port Count (0): 2
Storage Controller Bootable (0): on
Storage Controller Name (1): SATA
Storage Controller Type (1): IntelAhci
Storage Controller Instance Number (1): 0
Storage Controller Max Port Count (1): 30
Storage Controller Port Count (1): 1
Storage Controller Bootable (1): on
IDE (1, 0): Empty
SATA (0, 0): /media/disk/VirtualBox OS X HDD/windowSeven.vdi (UUID: 5c44157f-350a-467c-a988-b4cfb8635fd5)
NIC 1: MAC: 0800279A3907, Attachment: NAT, Cable connected: on, Trace: off (file: none), Type: 82540EM, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: deny, Bandwidth group: none
NIC 1 Settings: MTU: 0, Socket (send: 64, receive: 64), TCP Window (send:64, receive: 64)
NIC 2: disabled
NIC 3: disabled
NIC 4: disabled
NIC 5: disabled
NIC 6: disabled
NIC 7: disabled
NIC 8: disabled
Pointing Device: PS/2 Mouse
Keyboard Device: PS/2 Keyboard
UART 1: disabled
UART 2: disabled
LPT 1: disabled
LPT 2: disabled
Audio: enabled (Driver: ALSA, Controller: HDA)
Clipboard Mode: Bidirectional
Drag'n'drop Mode: Bidirectional
VRDE: disabled
USB: enabled
EHCI: enabled
USB Device Filters:
<none>
Available remote USB devices:
<none>
Currently Attached USB Devices:
<none>
Bandwidth groups: <none>
Shared folders:
Name: 'music', Host path: '/media/disk/music' (machine mapping), writable
VRDE Connection: not active
Clients so far: 0
Video capturing: active
Capture screens: 0
Capture file: /root/VirtualBox VMs/windowSeven/windowSeven.webm
Capture dimensions: 1024x768
Capture rate: 1024 kbps
Capture FPS: 25
Guest:
Configured memory balloon size: 0 MB
calpoly@arch:~$ sudo modprobe vboxdrv
calpoly@arch:~$ sudo modprobe -a vboxguest vboxsf vboxvideo
modprobe: ERROR: could not insert 'vboxguest': No such device
modprobe: ERROR: could not insert 'vboxsf': No such device
calpoly@arch:~$ sudo modprobe vboxnetflt
calpoly@arch:~$ sudo modprobe vboxsf
modprobe: ERROR: could not insert 'vboxsf': No such device
calpoly@arch:~$ sudo VBoxManage list usbhost
Host USB Devices:
<none>
Have rebooted and reinstalled virtualbox multiple times to no avail.
It is important to note that my iPhone used to sync with iTunes on Windows 7 in Virtualbox, but then I removed the USB filter and did some updates and now it no longer works.
I have spent many more hours than I care to admit on this problem, so please, any help is welcome.
Last edited by Kg4XmtUSyxd8B9M7Ex&&KXZGF (2014-02-11 12:33:00)

[SOLVED] setting up permissions for mounted usb devices

Hi all,
I've been having the following problem when mounting my external hd: in order to mount the external hd I created a folder /mnt/usbstick/ giving permissions to a non-root user to read the files/directories in this folder (using chmod); however, after I mount the external hd, the set of permissions for /mnt/usbstick/ change so that a non-root user cannot read the mounted files in /mnt/usbstick. This is a problem for me because, when I copy a file from the external hd to the non-root home folder, the copied file can only be read by the root user.
Do you know how I can solve this problem? Should I write a udev rule and place it at /etc/udev/rules.d/? Or should I simply add the non-root user to a specific group from /etc/group? Any ideas?
Thanks!
Last edited by falsum (2010-05-08 09:21:59)

You could try adding an entry for your usb device in /etc/fstab and specify the option user to let non-superusers mount it.
Here's an example of an entry for my external HD. I'm sure there are probably other (and better) ways to do this but it works for me.
UUID=4376-0BFB /media/FIRELITE vfat rw,user,noauto,async 0 0
Nice howto found on the wiki: http://wiki.archlinux.org/index.php/Fstab

Error message: "USB device drawing too much power"; Battery will no longer hold a charge. Help?

A few months back a jump drive broke while inserted in my Macbook (the computer fell sideways and cracked the jump drive). That particular USB port no longer works and I keep receiving an error message that tells me a USB device is drawing too much power, even though nothing is plugged into either port.
It wasn't a huge issue until my battery stopped holding a charge. The computer is usable while plugged in, but as soon as the cord is disconnected it will immediately shut down. I assume this has something to do with the faulty USB port.
In addition, my CD drive will no longer burn CDs. It will read CDs and allow me to open content from them, but it will no longer burn content to a new disc.
As soon as I am able I am taking the computer to the store to get checked out, but in the meantime I wanted to see if someone has experienced a similar problem and knows what needs to be replaced or repaired, and how much that might be.

I guess I should say, abnormally warm. Does it feel like there's a small heater going in there?
I don't think this is the kind of thing you want to undertake, not if you're asking about how to do it. I don't know much about the insides of Macbooks other than the parts needing replacing are probably soldered to the rest of the computer. It's really something you need an expert to investigate.

[SOLVED] USB Devices No Longer Designated by UUID

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