Hardware :: Possible To Access An IrDA Device As A Serial Device Such As /dev/ttyUSB0?

May 24, 2011

the message from dmesg for the IrDA device:

[ 3635.194162] usb 3-1: new full speed USB device using uhci_hcd and address 2
[ 3635.338159] usb 3-1: New USB device found, idVendor=066f, idProduct=4200
[ 3635.338165] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0


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OpenSUSE :: Set RxtxSerial - Java App Has Access To A Serial Port (via SiLabs CP210x Driver, Port /dev/ttyUSB0)

May 10, 2010

I'm trying to set rxtxSerial to work so a Java app has access to a serial port (via SiLabs CP210x driver, port /dev/ttyUSB0). When I use update-alternatives --config java, there are 3 alternatives which provide `java'. I have tried openJDK and Sun. Both fail but with completely different messages.


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Ubuntu :: USB Serial Device Stops After Sometime?

Nov 4, 2010

I am able to use USB in serial mode for reading using



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Software :: Simulate Serial Device With Pty's ?

Sep 21, 2009

I wrote software which access and reads a serial device. I would like to test this software on my computer without loop-wiring or without a second computer.

How could I use pty's to simulate a serial device?

Actually I would like to temporary replace the /dev/ttyS1 file by one end of the pty. How could I do this? Is there a command to create a pty pair?

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OpenSUSE Hardware :: Cannot Mount USB Serial Device - Not Even As Root

Jul 19, 2010

I want to mount a serial device. To get do the data section in the device and retrieve image files. Not even root can mount.

# ls -l /dev/ttyU*
crw-rw---- 1 root uucp 188, 0 Jul 20 13:07 /dev/ttyUSB0
# mount -t fuse /dev/ttyUSB0 /media/M65
/bin/sh: /dev/ttyUSB0: Permission denied


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OpenSUSE Hardware :: Install A TUSB3410 USb To Serial Port Device On Suse 10.3?

Feb 27, 2009

I want to install a TUSB3410 USb to serial port device on suse 10.3.

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Fedora Networking :: Globetrotter HSDPA Modem - Identified As A Serial Device - Fail To Get It Working

May 7, 2009

I have bought a so-called web'n'walk stick, which identifies itself as a "Globetrotter HSDPA Model". I managed to get it identified as a serial device (initially, it is detected as a USB drive), but I fail to get it working.

Things that might be of interest:



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Software :: Cann't Find The Device Created Through Device Mapper In /proc/partitions?

May 15, 2011

Recently, I created a device sc0 through device mapper. The divice could be found in /dev/mapper/sc0. My problem is that the device doesn't exist in /dev/partitions which will block my following test.BTW, I found dm-0 in /dev/partitions. Is it the same as /dev/mapper/sc0? But the device /dev/dm-0 doesn't exist!

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Fedora Hardware :: Full Speed USB MSC Device Detected As Input Device?

Apr 7, 2011

I am working on an embedded system, which is an USB MSC device that supports some vendor specific scsi commands. I am using FC10 laptop as USB host for testing, and it runs some small apps based on sg3. All has been well for ~ a week. The FC10 laptop is able to communicate with the device and retrieve data. Suddenly, starting from today, the laptop is not able to properly detect the device. When plugged-in, the MSC device is detected as input device (I thought). This is observed from "dmesg" output and changes in "/dev/input/".The device under development is running at full speed. When I connect to winXP, no problem. A windows file explorer pops up, showing the content of the drive.Also, the FC10 has no problem with other USB flash drive (high speed).

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Ubuntu Multimedia :: Unable To Open Device /dev/dsp - Device Or Resource Busy

Apr 13, 2010

All my music editing software programs say, "unable to open device /dev/dsp.Device or resource busy." How can I fix this?

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Ubuntu :: Mdadm: Cannot Open Device /dev/sdb1: Device Or Resource Busy

Jun 11, 2011

I rebooted my server and out of nowhere the RAID5 array won't assemble. I've tried everything I could think of to reassemble the thing. I fear that the array is ruined, but I can't imagine how. Here are various bits of information: The simplest failure (with and without partition numbers, which have not been needed in the past):


richard@nas:~$ sudo mdadm --assemble --verbose /dev/md0 /dev/sd[bcd]
mdadm: looking for devices for /dev/md0
mdadm: cannot open device /dev/sdb: Device or resource busy


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Slackware :: VirtualBox - Windowsxp Guest - No Sound - Unknown Audio Device - In The Windows Device Manager

Mar 11, 2010

For those that use Virtualbox on their slackware host and have a windows (xp) guest running. I have tried various settings for sound (Alsa, PulseAudio), the AC97 drivers are installed in the Windows xp guest os, but there is no sound and there is an unknown audio device (in the windows device manager). If I remove the AC97 drivers and use the soundblaster16 drivers in the Vbox settings there is no unknown sound device, but there's still no sound. why I can't get sound working?

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General :: Ubuntu - Find The Device Node File For USB Device?

Aug 23, 2011

I've bought an X10 Home Automation USB interface: the CM15.

This is the information lsusb gives:

skerit@KIP-DU-SKER:~$ lsusb Bus 008 Device 002: ID 0bc7:0001 X10 Wireless Technology, Inc. ActiveHome (ACPI-compliant)

But this tells me nothing about where the device file is! How can I find that, or create one myself?

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Hardware :: Retrofitting A Device File For A Mass Storage Device?

Jan 7, 2010

here we have an older digicam (Jenoptik/Exakta Model "DC 22", if someone might want to know) that can be switched between some "PC Camera mode" and "Mass storage mode".Unfortunately, if attached to USB, it is always recognized as

UDEV [1262910483.475886] add /class/video4linux/video0 (video4linux)
lsusb tells:


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Server :: Lifekeeper Error - DEVICE FAILURE On SCSI Device - /dev/add

Sep 17, 2009

Since May 12,2009. Our system lifekeeper has the error log "lifekeeper error: DEVICE FAILURE on SCSI device '/dev/add'", but it ran normally. Until last week, it failover to the standby server. The disk still running, the error still come out.

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Fedora Installation :: Device Driver For Usb To Detect Device?

Sep 19, 2009

I am currently using fedora 11 kernel 2.6.29 version, i wanted to write device driver for usb to detect my own device. My project is radio with computer. My fm radio get connected to usb port so i need to write h/w interfacing program.

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Hardware :: USB Device Is Not Claimed By Any Active Driver For Every Device

Nov 10, 2010

The error "USB device 6 (vend/prod 0x603/0xf2) is not claimed by any active driver." is in dmesg every time I connect my Logitech keyboard to my system. I also tried (all with the same error):
- Memory stick
- DVD-burner
- Compaq mouse

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Software :: Getting Device Info From Device File?

Sep 26, 2010

Let's say I have a joystick in `/dev/input/js0`, how do I find out which device is it on `/sys/bus/usb/devices/`?

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CentOS 5 :: Specify The Device Driver When Mounting A Device?

Jul 28, 2010

I have installed live cd on usb pendrive. Everything works great. How can I find out which device driver it is using? Where are the device driver files stored? How do you specify the device driver when mounting a device?

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Hardware :: Cannot Access /dev/ttyUSB0 For Garmin Gps

Nov 2, 2010

I need to acces my garmin 305 to use Viking or Gpsman. I can't access the gps, :cannot open device.

usbcore: registered new interface driver usbhid
usbhid: v2.6:USB HID core driver
usbcore: registered new interface driver usbserial_generic


I've found My Tourbook which works really well with my garmin forerunner 305, just run it as root.

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Ubuntu :: Cryptsetup - Cannot Access Device

Feb 23, 2010

I have 10 hotswappable SATA drives I use for a rotating backup system. On each drive I have created an encrypted LUKS partition. I normally mount the drive by first unlocking it via:


cryptsetup luksOpen /dev/sdc1: BD-4-B

However some time last week this command refused to work...for any of the drive. Before I even get prompted for a password I get the terse error message: "Command failed: Can not access device"I can't recall if it was a system update that broke it, but now I can't get to any of the data on these devices nor can I run any backups.

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Fedora :: Command Failed: Can Not Access Device?

Jan 5, 2010

I updated quite a lot - kernel, selinux policies, initscripts, glibc and a lot more - and after reboot one filesystem does not mount. It says:Command failed: Can not access device... and asks for password. This is: RAID -> LVM (mirrored) -> LUKS -> ext3. Similar filesystem (raid->lvm(not mirrored)->luks->ext3) mounts fine. Mounting the problematic system by hand works fine. During boot, the lvm blockdev is named by UUID in crypttab, and the name used in fstab.

Of course I removed it from fstab to boot now. I tried downgrading initscripts so far, will try others. What I also noticed is that the emergency shell (bash) complains about something, I'd need to write it down next time I reboot; also "lvs" fails when / is ro, but maybe that's normal, dunno.Googling for the error message brought something about cryptsetup, but I didn't upgrade it (there is no upgrade available), and all I gather from it is that the error message might really mean something else, like device is already mapped.

It is probably something related to lvm mirrors, maybe also to luks, though the only related package in the list is the kernel, maybe the module-init-tools. SELinux seems not to be the cause, booting with permissive has the same problem. What I wrote above, leads me to thinking that luks is trying to set up lvm mirrors in parallel as they have the same uuid, but a) later during boot the mapping name is not there b) I have no idea what reads crypttab

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OpenSUSE :: Terminal Access To A Ethernet Device

Feb 24, 2011

I know that there is support for this, but i can't seem to find any appropriate tools. Let's say my widget is at; i need to open a terminal window talking to it. Then i can control the things connected to it (it is a bus converter). oS 11.1, KDE 3.5, various machines.

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OpenSUSE Hardware :: Changes In USB Device Access With Suse 11.2?

Dec 6, 2009

this weekend I updated the OS on my laptop from OS 10.3 to 11.2.Most things worked fine ... and quickly ... but I have issues with some USB devices.Printers and everthing that works like a Memory Stick, HD (camera, mobile phone) are OK. But after the update to 11.2 I can neither use my scanner anymore nor my Garmin GPS device. Both devices are listed with 'lsusb' correctly. But applications are not able to find/access them.

For the GPS device I do not know how to do more tests. The application (gpsman) that worked fine with 10.3 does not find it anymore. The Scanner is detected by Xsane or Skanlite and also the driver can be installed with Yast when plugged in. But a test fails with "sane_start: Error during Device I/O". 'sane-find-scanner' also lists the device correctly. As a normal user it complains that there is no write access for usblib to the usb device. As root this error does not appear. It can be avoided temporarily by setting chmod 777 to all /dev/bus/usb entries. Then 'sane-find-scanner' does not show any errors.
But the applications do not work.

I already added the normal user to the "lp" group as shown in the /etc/udev/rules.d/55-libsane.rules and tried to give access to the usb-devices in /etc/fstab .... all without success. As I have two USB devices (Scanner, GPS) that worked fine with 10.3 but are not an external HD (or similar), I assume that someting has changed with the handling of USB devices from 10.3 to 11.2.

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General :: How To Access TrackPad Device In Eeepc

May 24, 2011

I am on an Eeepc running Ubuntu and I am trying to store the raw data from the Eeepc's inbuilt track pad in a file.To do this with the keyboard (as root) I wentcat /dev/input/event7 > ~/raw-keyboard-out.dataThe result was the whole bunch of random-looking data I was hoping for.Now I want to do this for my mouse, and I tried all of the 'files' in this folder in an analogous operation and none of them seem to stream the input into a file.Does anybody know what the name of the TrackPad/mouse device is called in the /dev folder for an Asus Eeepc 1001p?

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Ubuntu Multimedia :: Access The Photos That Are On The Device, But Nothing Else?

Oct 17, 2010

I just recently purchased an iPod touch 4G running iOS 4.1 under the assumption that it would play nice with Ubuntu as stated here:..Devices/iPhone. It doesn't! I can't seem to get it to work. It shows up as a camera with 86MB of available space. I can access the photos that are on the device, but nothing else. I really would like to be able to transfer music to the device, but nothing seems to work. Rhythmbox doesn't even seem to recognize that it's there, the device isn't showing up in /media, and I can't seem to get a mount point. Has anybody out there had any success in this area? I've tried on both my 10.04 Desktop and 10.10 laptop machines

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Red Hat / Fedora :: Unable To Access Resume Device

Mar 18, 2010

How do you actually remove and install kernel when the system is not booting.

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Red Hat / Fedora :: Mailserver Have To Have Direct Access To WAN Or Can It Be A LAN Device With Just One NIC ?

Apr 22, 2010

Does a mailserver have to have direct access to WAN or can it be a LAN device with just one NIC ?

We have two WAN access points.

One is an adsl router joined to the switch and all seems fine for internet browsing.

The other is a wireless system with a linksys router joining by way of PPPoE and this appears to connect fine.

This PPPoE is direct to our ISP and where we need to downlod our mail to our pending mailserver.

When the linksys router is also joined to the switch all devices can use either the adsl or linksys to roam the net. linksys & is adsl.

When I join the linksys direct to the mailserver I will then need two NIC's. One for the Linksys and one for the LAN.

This is where the fun has started.

So.... Can I just have one NIC (connected to the switch) on the mailserver?

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Ubuntu :: Remote Access With Android Device

Apr 7, 2011

Any way to remote access my Ubuntu Server using my Android phone?

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General :: Switch CPU To 16 Bits To Access Its Device?

Apr 23, 2010

I have a CPLD (EPM240100T) chip that has data type of 16 bits, but the CPU access it using 8 bit. How do I switch the CPU mode (to 16 bits) to access this chip?

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