Home > Cannot Open > Cannot Open /dev/ttyusb0 Device Or Resource Busy

Cannot Open /dev/ttyusb0 Device Or Resource Busy

I found out my Huawei E220 is detected with no problems even without these two files, so I simply deleted them, which resulted in correct key, like the lshal output shows:modem.command_sets In olden days, if a PC was shutdown by just turning off the power, a bogus lockfile might remain and then later on one would get this bogus message and not Trying to see it would give the same "... more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed http://scriptkeeper.net/cannot-open/cannot-open-dev-ttyusb0-device-or-resource-busy-ubuntu.html

If it involves Plug-and-Play devices, see also the Plug-and-Play-HOWTO. If two devices use the same IRQ and you start up only one of the devices, everything is OK because there is no conflict yet. Advanced Search Forum Community Help: Check the Help Files, then come here to ask! Multimedia Card Reader Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 002: ID 067b:2303

If too many are reserved, the BIOS may not be able to find a free IRQ and will erroneously assign an IRQ to the serial port that creates a conflict. up vote 7 down vote favorite 2 I connect to my Arduino board with the following Python code. Then use ctr-A ctr-\ to close it properly (will ask you to confirm). Formerly this was often due to the "serial" module not being loaded.

But if someone pulls the plug on your PC it's an abnormal exit and correct permissions may not be restored. 16.11 "Cannot open /dev/ttyS?" Unless stty is set for clocal, the if that works then it's a permissions issue. Before touching one of the test leads with your tongue, test them to make sure that there is no high voltage on them. The time now is 02:19 AM.

And, finally, my id:uid=1000(templaryum) gid=100(users) groups=7(lp),10(wheel),14(uucp),33(http),50(games),90(network),91(video),92(audio),93(optical),95(storage),97(camera),98(power),100(users),108(vboxusers)and yet I get this when I wvdial as a normal user:--> WvDial: Internet dialer version 1.60 --> Cannot open /dev/ttyUSB0: Device or resource busy --> Using "scanport" (Debian only ??) will scan all enabled bus ports and may discover an unknown port that could be a serial port (but it doesn't probe the port). Sorry" Sometimes when it can't create a lockfile you get the erroneous message: "... What adjustments do i need to make?? $ wvdialconf Editing `/etc/wvdial.conf'.

usb_modeswitch is being runned with default, 12d1:1446 configuration:Code:DefaultVendor= 0x12d1DefaultProduct=0x1446TargetVendor= 0x12d1TargetProductList="1001,1406,140b,140c,1412,141b,1433,14ac"CheckSuccess=20MessageContent="55534243123456780000000000000011062000000100000000000000000000"Code:May 12 09:24:38 archbook kernel: [ 7280.806101] usb 1-1: new high speed USB device using ehci_hcd and address 27May 12 09:24:39 archbook It also may mean that the serial port is in use (busy or opened) and thus the attempt to get/set parameters by setserial or stty failed. You've got yourself a free beer (if you ever find yourself in Serbia, that is ). Did you configure it properly with setserial?

It worked like a charm, typing from my Arch box! http://benimana.blogspot.com/2011/06/your-huwawei-modem-is-giving-error.html But if devfs notation such as "tts/2" was being used, there was no bug. Ubuntu Ubuntu Insights Planet Ubuntu Activity Page Please read before SSO login Advanced Search Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Hardware [ubuntu] ttyUSB0: Device or resource busy Having You need to find your serial port and possibly configure it.

Some "files" in the /proc tree (such as ioports, interrupts, and tty/driver/serial). 16.21 Almost all characters are wrong; Many missing or many extras Perhaps a baud mismatch. weblink Watch the boot-time messages for the serial ports. 2. Good Linux bookmarks How to ask questions about Linux LDP's HOWTOs Directory of Linux Bash Commands Linux Newbie Administrator Guide Rute User's Tutorial and Exposition A /dev/random forum run by Sensei couldn't be done because the kernel doesn't support doing it.

Adverb for "syntax" Would we find alien music meaningful? You may need to use setserial to tell Linux the IRQ you are using. 16.9 "Cannot open /dev/ttyS?: Device or resource busy See /dev/tty? Why is Professor Lewin correct regarding dimensional analysis, and I'm not? http://scriptkeeper.net/cannot-open/mdadm-cannot-open-dev-sda-device-or-resource-busy.html Tank-Fighting Alien Hyper Derivative definition.

You can not post a blank message. WvModem<*1>: Cannot set information for serial port. Do you want to help us debug the posting issues ? < is the place to report it, thanks !

Already a member?

Thus using "setserial" will not reveal the conflict (nor will looking at /proc/interrupts which bases its info on "setserial"). But a real conflict can be created if "setserial" has told the kernel incorrect info. I run Redhat 7.2 and my /etc/group shows Code: pppusers:x:44: I will assume you use gnome. United States Copyright © Apple Inc.

Marble Mouse (4-button) 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 003: ID 04f2:a13c Hide Question All replies Helpful answers by Sefi G,★Helpful Sefi G Jun 14, 2014 8:38 PM in response to Les 76 Level 1 (5 points) Jun 14, 2014 8:38 PM in ls -Al /dev/tts yields:total 0 crw-rw---- 1 root uucp 4, 64 2009-06-18 11:04 0 crw-rw---- 1 root uucp 4, 65 2009-06-18 11:04 1 crw-rw---- 1 root uucp 4, 66 2009-06-18 11:04 his comment is here The situation for I/O address (such as 0x3f8) conflict is similar.

This will tell the driver to use polling instead of interrupts. thanks in advanceahh i almost forgot i have already add the one of my users to the root group at the /etc/group file.thanksPichi RE: Cannot open /dev/ttyS0: Device or resource busy It has no IO address. Checking to find the interrupt conflict may not be easy since Linux supposedly doesn't permit any interrupt conflicts and will send you a /dev/ttyS?: Device or resource busy error message if

The RS232 serial port on my iMac is provided via a Prolific USB to Serial adaptor. How can I avoid any other process blocking the port? Still others have jumpers so that you can connect any wire to any wire. If the "serial" module wasn't loaded but "lsmod" shows you it's now loaded it might be the case that it's loaded now but wasn't loaded when you got the error message.

login...bla pass...blactrl +azthen q to quit without resetand run the pppd daemonsee what happeneds =-=-=-=-=-=-=-=-=-=-=-=Unix Systems Engineer=-=-=-=-=-=-=-=-=-=-=-= RE: Cannot open /dev/ttyS0: Device or resource busy timsr (MIS) 3 Mar 03 08:35 I tried changing permissions on /dev/tts/USB0 (/dev/ttyUSB0 links there), but in vain. Use "ls -ld /var/lock" to see if the permissions are OK. please!

See What is set in my serial port hardware? So I just installed wvdial ... iMac, OS X Mavericks (10.9.2) Posted on Apr 11, 2014 1:38 AM Reply I have this question too Q: How do I free a busy tty device? Cancel Red Flag SubmittedThank you for helping keep Tek-Tips Forums free from inappropriate posts.The Tek-Tips staff will check this out and take appropriate action.

Trying to use a 12 V incandescent light bulb is not a good idea. I'd never think of that, you are probably the only one who can understand the amount of work you got me rid of.Ok, now I only have to find out how more hot questions question feed lang-py about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation It checks TD, RD, CD, RTS, CTS, DTR, and DSR.

See Very High Speeds Next Previous Contents Benimana Robert blog Monday, 27 June 2011 your huwawei modem is giving error: > > Cannot open /dev/ttyUSB0: Device or resource busy If your