Does /dev/ttyUSB* causing my usb 3G Dongle doesn't work when plug-in


 
Thread Tools Search this Thread
Operating Systems Linux Ubuntu Does /dev/ttyUSB* causing my usb 3G Dongle doesn't work when plug-in
# 1  
Old 03-16-2011
Does /dev/ttyUSB* causing my usb 3G Dongle doesn't work when plug-in

Hi,

Is someone knows how or maybe the caused why my USB 3G dongle doesn't work when plug-in after boot the /dev/ttyUSB*

I wonder how this /dev/ttyUSB1-4 works, i had a 3G USB dongle for my internet connection before i used lucyd lynx this the same USB dongle works fine when i plug-in after boot but now it seems it doesn't after i reformat my laptop lucyd. Now i must plug-in the USB before i boot the machine. After some troubleshooting. i wonder why i don't have the /dev/ttyUSB1-4 when i plug-in after boot.

Is there any configuration that doesn't start when i plug-in when running and it will only start reading it when the USB detected during boot.

I wonder why before its works but now it doesn't..

One time this usb works after i switch from my windows 7 to lucyd.Its like it will work if maybe some packet of data remain in the usb.

I had a maverick on my laptop at home this USB dongle works fine on my maverick 10.10.

Someone knows or maybe solve this issue.
# 2  
Old 03-16-2011
Didn't you already create a topic about this?

You might have better luck in our hardware forum, or in an Ubuntu-specific forum.

I don't know why the /dev/ttyUSB devices don't appear, but it seems more like a symptom than a cause. It may be a kernel-related problem. You might be able to get some information from dmesg, compare what you get when you boot with it plugged in with what you get when you plug it in later. Also see what lsusb tells you, it may give you more specific model numbers etc. to hunt for.
# 3  
Old 03-16-2011
Sorry i already created the topic about this one..i forget since no one address my problem and also i wait for any responce maybe someone knows or solved the problem. Just now i decided to tacke this issue not like before im afraid i will lose my internet connection in the process since this is the only way i can connect to the internet.

By the way i just solved my problem by installing the package usb-modeswitch

Some add info

My USB dongle is HUAWEI E169u, Asus Laptop, and Lucyd lynx. kernel linux 2.6.32-30-generic

Thanks for the reply..
Login or Register to Ask a Question

Previous Thread | Next Thread

7 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

CONFIG_HID=y and logitech usb mouse B185 doesn't work in 5.3.0-RC2

trying to make the best for me with 5.3.0-RC2, everthing's fine, the dell vostro 3558 does what it should - but - and here's the question: how do I get a logitech m185 (wireless mouse) to work; I googled around but couldn't fiind anything usefull; the best I get when using solaar (depreciated?) is:... (2 Replies)
Discussion started by: vanbreukelingen
2 Replies

2. UNIX for Advanced & Expert Users

Disk /dev/sdb doesn't contain a valid partition table

Hello, I have rebooted the RHEL VM but after rebooting the vm it not showing all the partition mounted on OS level, if i'll execute the fdisk -l command, then i'm able to see the same disk. below is the fdisk output : # fdisk -l Disk /dev/sda: 107.6 GB, 107639996416 bytes 255 heads, 63... (1 Reply)
Discussion started by: purushottamaher
1 Replies

3. UNIX for Advanced & Expert Users

/dev not updated on usb device removal

Hello all :-) i'm not sure if its a beginner or advanced question but i have the following problem - now for some months after building a kernel from source (2.6.36 and now 2.6.38) the /dev/sd* entries are not removed if a remove the corresponding usb disk, sd card, what ever. i'm pretty sure... (0 Replies)
Discussion started by: apfelkuchen
0 Replies

4. Filesystems, Disks and Memory

Cant' mount usb drive, /dev/sda1 not showing up

Hi, I'm trying to mount a usb drive but the path /dev/sda1 does not show up under /dev when I plug in the usb device. In fact I see no differences under /dev before and after I plugin my usb drive. Any ideas why the system is not recognizing the usb drive and how to fix? This is on a... (3 Replies)
Discussion started by: orahi001
3 Replies

5. UNIX for Dummies Questions & Answers

Script doesn't work, but commands inside work

Howdie everyone... I have a shell script RemoveFiles.sh Inside this file, it only has two commands as below: rm -f ../../reportToday/temp/* rm -f ../../report/* My problem is that when i execute this script, nothing happened. Files remained unremoved. I don't see any error message as it... (2 Replies)
Discussion started by: cheongww
2 Replies

6. Shell Programming and Scripting

Some env setting is causing the script not to work ?

Not sure what has changed in the Unix environment. The following script which was working is now not working. #!/usr/bin/ksh # ----------------------------------------------------------------------------- # File: monitor_db.sh # #... (1 Reply)
Discussion started by: uuser
1 Replies

7. UNIX for Advanced & Expert Users

USB Hot Plug Mandrake 9.0

I recently installed Mandrake Linux 9.0 on my intel machine, with a view to migrating completely from Windows within the next few months. First I need to get things working. My modem, sound card, scanner and printer all fail to work. This isn't going to put me off because I love the interface... (1 Reply)
Discussion started by: saabir
1 Replies
Login or Register to Ask a Question