Minicom Cannot Open /dev/ttyusb0 Protocol Error
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Ttyusb0 Not Found
just like you, helping each other. Join them; it only takes a minute: Sign up How to connect to a terminal to Serial-USB device on Ubuntu 10.10? up vote 36 down vote favorite 24 I am trying to connect minicom to a serial device that is connected via a USB to Serial adapter. This is a /dev/ttyusb0 permission denied PL2303 and from everything I've read no additional drivers are required. The device is recognised as a PL2303. I'm a beginner at minicom. Is this the correct command to execute? Or do I need to configure something? $ sudo minicom --device /dev/ttyUSB0 minicom: cannot open /dev/ttyUSB0: No such file or directory $ sudo lsusb -v Bus 002 Device 006: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port Device Descriptor: bLength 18 bDescriptorType 1 $ tail /var/log/syslog #then removed and attached the device. Mar 13 23:31:49 ubuntu kernel: [807996.786805] usb 2-1: pl2303 converter now attached to ttyUSB0 Mar 13 23:34:44 ubuntu kernel: [808172.155129] usb 2-1: USB disconnect, address 7 Mar 13 23:34:44 ubuntu kernel: [808172.156321] pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0 Mar 13 23:34:44 ubuntu kernel: [808172.156374] pl2303 2-1:1.0: device disconnected Mar 13 23:34:52 ubuntu kernel: [808179.497856] usb 2-1: new full speed USB device using uhci_hcd and address 8 Mar 13 23:34:52 ubuntu kernel: [808179.785845] pl2303 2-1:1.0: pl2303 converter detected Mar 13 23:34:52 ubuntu kerne
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Search Forum The Ubuntu Forum Community Ubuntu Official Flavours Support New to Ubuntu [ubuntu] wvdial: cannot open /dev/ttyUSB0: no such file or directory Having an Issue With Posting ? Do you want to help http://stackoverflow.com/questions/5347962/how-to-connect-to-a-terminal-to-serial-usb-device-on-ubuntu-10-10 us debug the posting issues ? < is the place to report it, thanks ! Results 1 to 6 of 6 Thread: wvdial: cannot open /dev/ttyUSB0: no such file or directory Thread Tools Show Printable Version Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode December 14th, 2010 #1 alecodd View Profile View Forum Posts Private Message Spilled the Beans Join Date https://ubuntuforums.org/showthread.php?t=1644952 Nov 2010 Beans 12 wvdial: cannot open /dev/ttyUSB0: no such file or directory I'm trying to connect w/ my HUAWEI E160E modem, but i get the follwoing message: Code: --> Cannot open /dev/ttyUSB0: No such file or directory `lsusb' gives: Code: Bus 005 Device 001: ID 0000:0000 Bus 004 Device 001: ID 0000:0000 Bus 003 Device 001: ID 0000:0000 Bus 002 Device 001: ID 0000:0000 Bus 001 Device 001: ID 0000:0000 `dmesg|tail' gives: Code: [ 3330.582602] usb 5-2: airprime converter now attached to ttyUSB1 [ 3330.582885] usb 5-2: airprime converter now attached to ttyUSB2 [ 3330.585122] usb-storage: probe of 5-2:1.1 failed with error -5 [ 3330.585184] option 5-2:1.1: airprime converter detected [ 3330.585466] usb 5-2: airprime converter now attached to ttyUSB3 [ 3330.585684] usb 5-2: airprime converter now attached to ttyUSB4 [ 3330.585878] usb 5-2: airprime converter now attached to ttyUSB5 [ 3334.581834] scsi205 : SCSI emulation for USB Mass Storage devices [ 3334.582128] usb-storage: device found at 122 [ 3338.578479] usb-storage: waiting for device to settle before scanning [ 3339.581965] usb-storage: device scan complete [ 3339.584080] scsi 205:0:0:0: CD-ROM HUAWEI Mass Storage 2.31 PQ: 0 ANSI: 2 [ 3339.615013] sr0: scsi-1 drive [ 3339.615227] sr 205:0:0:0: Attached scsi CD-ROM
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shooters, I am using 3g modem (MTS data card), modules related to USB-Serial in the kernel were also built. The problem is though device is detected, but ttyUSB0 is not created. debug message. root@phyCORE-AM335x:/ [ 284.964416] usb 1-1: new full-speed USB device number 3 using musb-hdrc [ 285.105438] usb 1-1: New USB device found, idVendor=19d2, idProduct=fff5 [ 285.112304] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 285.119628] usb 1-1: Product: USB Storage [ 285.123718] usb 1-1: Manufacturer: ZTE, Incorporated [ 285.128814] usb 1-1: SerialNumber: 000000000002 root@phyCORE-AM335x:/ ls /dev/tty tty tty14 tty20 tty27 tty33 tty4 tty46 tty52 tty59 tty8 ttyO5 tty0 tty15 tty21 tty28 tty34 tty40 tty47 tty53 tty6 tty9 tty1 tty16 tty22 tty29 tty35 tty41 tty48 tty54 tty60 ttyO0 tty10 tty17 tty23 tty3 tty36 tty42 tty49 tty55 tty61 ttyO1 tty11 tty18 tty24 tty30 tty37 tty43 tty5 tty56 tty62 ttyO2 tty12 tty19 tty25 tty31 tty38 tty44 tty50 tty57 tty63 ttyO3 tty13 tty2 tty26 tty32 tty39 tty45 tty51 tty58 tty7 ttyO4 root@phyCORE-AM335x:/ lsmod Module Size Used by driver 2438 0 root@phyCORE-AM335x:/ Thank you in advance. With Regards. Always Embedded. davef 2013-04-05 07:00:17 Do you need to look into the udev rules? I would suggest, as an example 49-teensy.rules I use that for a board which thinks it is a USB modem. (Adafruit ATmega32U4) Are you not getting good support from PhyTech on this platform? Juergen Beisert 2013-04-05 10:15:52 Hard to answer, because you are not using a FriendlyARM board... From your logs: no driver feels responsible for your USB device. That's why you do not get a device node. embsys123 2013-04-05 11:25:33 Thank you for going through my query. It is happening same with friendly arm board. can I be helped by any one of you for the solution. With Regards. Always Embedded. embsys123 2013-04-05 12:39:01 Dear All, ttyUSB0 is created well with usb to serial converter (prolific tech) and able to access it. But when I am using MTS usb modem (data card, ZTE make), /dev/ttyUSB0 is created but una