I've got a server with a USB device which I'm having problems with. I'm not actually near the server and what I'd like is a way of removing the device and plugging it in again virtually using the command line.
View 7 RepliesAfter much effort I got mythtv to work on my HP TouchSmart. Then I decided to install it on my laptop before I forgot all the troubleshooting tricks.So I unplugged my Hauppauge WinTV-HVR 850 from the TouchSmart and plugged it in the laptop. I was successful getting mythtv running on the laptop so I returned the tv tuner to the TouchSmart.Much to my dismay, mythtv no longer worked on the TouchSmart. I moved the tuner to the laptop again to see if mythtv worked. It didn't. Apparently, the act of unplugging the tuner and plugging it back in broke something.
For usb hard drives and cameras, an icon appears on the desktop that allows me to right click and choose to safely remove the device. I had no idea that unplugging a usb device without such an icon would cause any problems.Initially, the problem seemed to be with mythtv as I was able to successfully execute the following commands:
Code:
scan -x0 /usr/share/dvb/atsc/us-ATSC-center-frequencies-8VSB
mplayer dvb://WTVF-HD
[code]....
I have a Razer headset plugged in. Everytime I restart the computer I have to unplug/plug the headset to make it work. It even shows up the system:
lsusb
Bus 002 Device 002: ID 1532:001b Razer USA, Ltd
It does not show up as a valid sound device in system -> preferences -> sound.how I can make the headset "active" without replugging it to the computer?
uname -a
Linux unix 2.6.35-28-generic-pae #50-Ubuntu SMP Fri Mar 18 20:43:15
UTC 2011 i686 GNU/Linux
Today my keyboard and or mouse repeatedly stop responding some minutes after boot. Currently the mouse stops responding after a few seconds of movement immediately after boot. Yesterday I used the machine most of the day, yet this issue didn't arise. Today I used it for a few hours before the issue developed. I did a full system update from the fresh install yesterday night. It's therefore possible that this issue has arisen as a result of the update, and that today the onset was delayed for some reason.
Earlier today I had the same problem with the keyboard. I replaced the batteries thinking that this was the cause. Now it looks like both keyboard and mouse are affected by the same problem. When the mouse stops functioning and the keyboard remains active, I unplug the mouse and replug it in, but it still does not respond, and only the unplug, and not the replug, are detected and logged in dmesg. I noticed ever since I installed Fedora yesterday that plugging in new usb devices after boot did not result in them being recognised, and that if I unplugged a mouse or keyboard and plugged them in again they would not work (requiring a hard reset). Currently the machine isn't usable as I cannot use the mouse for more than a few seconds. I haven't tried a PS2 connection, and currently I have keyboard access.
Hardware:
Fujitsu LZ945230BH1 USB Mouse
Microsoft Arc Bluetooth Wireless USB Keyboard
Running Fedora 14.
I haven't tried PS2. My keyboard and mouse appear to be working again (25 mins and still responsive).I unplugged all USB devices except for the keyboard, mouse, and wifi dongle. This appears to have solved the problem. Other devices that were plugged in were a USB to SATA external HDD caddy (powered off), and a serial USB connection to a Sheeva Plug computer (mini server). how I can use all my USB ports in future without this issue arising?
The system will also crash when booting if it is not plugged in. However, this behaviour is not consistent. The crash is not really a crash so much as a complete system freeze, where not even the numlock light on the keyboard will turn on or off. I have to do a hard reset to get it going again.The last entry before the reboot in /var/log/messeges just shows eth0 link going down.
View 1 Replies View Relatedunplugging a usb hard drive. How should I do it? How do I know whether it has stopped? Do I have to click on something before I unplug it? I have an old usb 30 gb HD with some important data on it. I have never had a problem with it before and have always just unplugged it when I had finished with it. Now I cannot get access to it any more.
View 9 Replies View RelatedI have a Brother MFC-665CW printer and finally got it connected via wireless. I always unplug my printer when I am not using it. But every time I plug it back in and print something, it always do a cleaning of the printer heads before printing.
System stats:
Running: Ubuntu 10.04 32 bit
What else should I add to the system stats?
I've not changed my configuration, but after temporarily unplugging my laptop from the router, I can no longer persuade it to connect again.Have restarted it repeatedly, but to no avail.A similar problem has been occurring with my Huawei 3G Dongle which has suddenly started behaving.Are there any troubleshooting guides for the Network Manager's wired connections? Don't know where to start.
View 5 Replies View RelatedI 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).
View 1 Replies View RelatedI 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.
View 1 Replies View RelatedAfter much research, I have found the solution to my intermittent wireless problem!Whenever the laptop is plugged into power, wireless is perfect, when I'm on battery, wireless is horrible.Here is the fix:
Code:
sudo iwconfig eth1 power off
Unfortunately, I have to type this in everytime I unplug the laptop.
[code]....
I installed ZTE MF 626 modem in my F10 with kernel 2.6.27.12-170, i run usb_modeswitch and so far things happened normally. Watching through /var/log/messages it says that F10 detects two port device for this modem: ttyUSB1 and ttyUSB2, and in the sequence it disable port ttyUSB1 BUT Network Manager still set this port.I mean, when i connect via wvdial appointing to ttyUSB2 i get connection, but Network Manager fails to do it appointing to ttyUSB1. How to change device port in Network Manager?
View 1 Replies View RelatedRunning Fedora 13, I cannot add my HP J4680 through the HP Device Manager. I get an error message saying that the print queue cannot be started and it asks me to restart CUPS. I tried restarting CUPS and adding the device. It did not work. The printer is on my home network wirelessly. I can add it through the CUPS web interface and print, but then I cannot access the scanner. I tried adding the device after it was already added through CUPS, but that did not work. I would like to use the scanner; I don't really care about the fax.
View 8 Replies View RelatedI just added a 2 port network card to a system that is running Fedora 11, but it is INACTIVE. I open the Network Device Control to activate it but there is no network ports in Network Device Control. It is empty.It looks like the system recognize the card and loaded correct driver.
View 4 Replies View RelatedI have recently installed fedora 15, I'm trying to connect my mobile phone to my laptop through bluetooth, when I did setup new device it is just showing device address and (instead of name), and the forward button is not enabled..FYI - I have started and enabled the bluetooth services using systemctl
View 9 Replies View RelatedRecently, 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!
View 2 Replies View RelatedAll my music editing software programs say, "unable to open device /dev/dsp.Device or resource busy." How can I fix this?
View 3 Replies View RelatedI 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):
Code:
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
[code]...
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?
View 13 Replies View RelatedI'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?
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
[code]...
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
Code:
UDEV [1262910483.475886] add /class/video4linux/video0 (video4linux)
lsusb tells:
[code]...
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.
View 3 Replies View RelatedI got this information of creating raw devices and then starting the service service rawdevices start.But there appears to be no service 'rawdevices'. Please can anyone help me with this?Is there anyway I can create an disk /dev/sda7 and then link it as a raw device?
View 5 Replies View RelatedThe 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
Is there anyway to sync my mtp device? I use Rythmbox and quite like it. It will let me drag and drop songs onto my MTP device. What I'm looking for is a true sync. Something that will delete from the device if it's been deleted from my library. Or update, or anything really. Just a sync, not a drag and drop.
View 14 Replies View RelatedI have an internal card reader that connect via usb. I'm finding that when I plug in a memory card a umount of the card "unmounts" the card reader. From that point forward I can't use the device without rebooting the machine! I've tried unloading the usb-storage module and reloading it but that doesn't help. I see the following entries in the messages file when I do that.
View 4 Replies View RelatedWhen I mount an usb device, I want to get the information contained in the structure usb_device. This information tally with the device which is being mounted now (dev_name). So I want to get, for example, the path where the device will be mounted (/dev/sda) before it is mounted naturally.
View 1 Replies View RelatedI have a USB CDC device that I want to use in Fedora 13.I have a USB to TTL converter that I want to use to connect a GPS with TTL output to my PC, since this PC does not have a serial port. I am running windows7 Ultimate, Fedora 13 and WinXp. The converter uses an FTDI chip.When I connected the device in windows 7 it showed as a USB device. However using the vendor supplied driver enabled it to be treated it as a COM port and I used a vendor supplied terminal to communicate with the device. The device however behaved abnormally and after a reboot stopped working showing an enumeration error.I switched to Fedora 13, where the device showed as /dev/ttyUSB0. I used stty -F /dev/USB0 ispeed 4800 and then cat /dev/ttyUSB0 to communicate with this device. It worked fine. However after a reboot it started behaving weird.
I used dmesg | grep tty and the output showed the device as being connected and disconnected frequently, although I did not disconnect it.lsusb sometimes showed an entry Bus 006 Device 002: ID 0403:6001 Future Technology Devices International, Ltd FT232 USB-Serial (UART) ICand at other times showed no such device. I thought there was a problem in the hardware.But then i connected the device to WinXP. It showed up as COM3 in the device manager. I changed the speed to 4800 bps and set flow control to XON/XOFF in the property of COM3. In the Hyperterminal application that ships with WinXp I set 8 bit data and no parity bit. It worked flawlessly. I have to make these settings at every reboot.However I want to use it under Linux (fedora 13). My guess is that if i can somehow set the XON/XOFF and 8 bit data, no parity things it would work fine
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/`?
View 2 Replies View Related