Ubuntu Networking :: Intermittent Connectivity Using Huawei E 1550 USB Modem On 10.4
Aug 18, 2010
I have a Huawei E 1550 USB stick modem and I'm trying to consistently get it working with Ubuntu 10.4. Using usb_modeswitch and wvdial I've got the device recognized as both a modem and disk drive and it seems to be working okay. wvdial usually is able to find the modem and connect and I can get online no problem. That's the good part.
However, after some amount of time (sometimes just a few minutes, sometimes hours, but it always eventually happens) the modem stops working and gets into a state where when I run wvdial it keeps looping and failing with:
Code:
ATDT*99#
NO CARRIER
--> No Carrier! Trying again.
--> Sending: ATDT*99#
[code].....
Interestingly enough, when it's in this state I am still able to access the modem, and via AT commands am able to see that it has signal, can make phone calls, and can send SMS messages! It just can't seem to dial a data connection. Now, unplugging and plugging the modem back in almost always seems to solve this problem, only for it to fail randomly at some undetermined point in the future.
Why can't I just keep unplugging and replugging the modem, you ask? Because the computers (yes there are currently 9 computers and modems I need this to work on) are being deployed to clinics and offices in rural Africa where they will be locked in a box so they aren't stolen. I have pursued ways to shutdown power to the USB port in order to "fake" a hard pull of the cord in software, but haven't been successful so far. I've also tried reading as much as I can on the NO CARRIER response, but so far it's not turned anything up.
I recently got a HUAWEI E1630 HSDPA USB Modem and it was working fine until recently. Recently it starts to drop the connection and in /var/log/messages I can see a pppd error "Protocol-Reject for unsupported protocol xxxx". The protocol number is random. Only way to resume is to unplug and replug the device. The happens very frequently and hence the device is not usable.
To isolate the service provider end, I use the same SIM on a PROLINK HSDPA USB Modem and it works fine. Also I use a different SIM from another service provider in this device and the issue still exists.
I am on Kubuntu 10.10 with all the updates to date. Should I report a bug?
I use a Huawei E 1550 mobile connection, which worked fine in Ubuntu 9.10.I've got it working okay in 10.04, having installed modeswitch. However, it will not automatically reconnect if it drops out. I can force a reconnection, only if I remove the dongle and then plug it in again. Although it shows in network manager, clicking on the list entry for the dongle, just produces a disconnected dialogue message. The only way to get it to reconnect is to remove the dongle and plug it in again.I know there have been a few posts about getting mobile dongles to work in 10.04, but I can't see any solutions to this little issue yet.
Just recently I've been having strange connectivity problems with my wireless network. The connection has previously worked fine and haven't had any problems with it. I haven't installed anything that would have affect it as far as I know. how do I go about testing the network to see where the problem lies? I'm running Ubuntu 10.10 with a Netgear WG111v2 wireless adapter and my guess is it is some strange configuration problem or a rogue application is eating up packets because the system works fine when I boot it up into Windows.
When I try to ping my router I'll usually get something like 98% packet loss. However in the output below, the network sprang to life half way through my pings so it went up to 63%. What other tools can I try to find out what's going on?
Code:
alex@obsidian:~/dev $ ifconfig eth0 Link encap:Ethernet HWaddr 00:1a:4d:4e:03:3f UP BROADCAST MULTICAST MTU:1500 Metric:1
To be brief, I am having intermittent connectivity issues with a wired connection to a WRT54G2 router. I have no such issues if I am plugged straight into the modem. My wireless persists throughout the outages and they usually require me to restart the interface on my machine. I have used Wicd Network Manager and Ubuntu's out-of-the-box Network Manager.
hostname -rs Code: Linux 2.6.32-25-generic ifconfig eth0 .....
i'm running Kubuntu karmic and i've been using a 3G Huawei E1552 modem to connect to the internet, everything was going well when suddenly my modem stopped working. I've tried reconfiguring everything, i even reinstalled kubuntu from scratch with no success.Here's a part of my /var/log/debug
HTML Code: Feb 8 17:14:01 alberto-laptop kernel: [ 1532.099883] usb-storage: device found at 7 Feb 8 17:14:01 alberto-laptop kernel: [ 1532.099888] usb-storage: waiting for device to
I moved from Debian to Ubuntu a few months ago, with everything working fine, except my 3G modem (which worked with wvdial and umtsmon in Debian).
The packaging claims that it is a Huawei E160, but lsusb says different: E220 (12d1:1003).
I've followed various instructions from these forums and the wiki, and it seems to be being recognised as a modem (I can set up an O2 prepaid (UK) connection), but it refuses to connect.
ubuntu I can not use a wireless modem huawei 160.type can only be used in windows.well to be used in my ubuntu linux? whether there is a script that used.
Apparently it works with >Ubuntu 9.04, but I need 8.04..I'd had an older modem working on the same system, so its really something to do with this newer ones.
Symptoms:
lsusb shows little, no /dev/ttyUSB* devices lsusb Bus 004 Device 001: ID 0000:0000 Bus 003 Device 001: ID 0000:0000
This is really weird, and I would like just this question answered: I've spent like 2 hours by plugging, unplugging, rebooting, and doing everything I could, but the modem wasn't working. When I did ls /dev/ttyU* it was showing up a list of 6 usb devices.
Code: /dev/ttyUSB0 /dev/ttyUSB1 /dev/ttyUSB2 /dev/ttyUSB3 /dev/ttyUSB4 /dev/ttyUSB5 And when I sent the command wvdialconf after looking into all the devices, it didn't recognize any modem.
The thing is, that by the time I was writing here for a solution, I disconnected the modem, and when I reconnected it I did a ls /dev/ttyU* just to copypaste the info, and Voil! there were just 2 devices, and wvdialconf worked out just fine! I would like to know what I was doing wrong, so I make sure it won't happen again.
I recently received my Ubuntu 9.10 CD, Kubuntu 9.10CD and Server Edition. I was recommended to do so by a friend because my computer Running on Windows Vista Home Basic with 512MB RAM has been extremely, unbearably slow for the last month or so I got the CD's yesterday and I ran the Ubuntu CD and everything was fine, I rebooted the Computer and it started up! It was great!! Really quick and responsive and easy to use and i LOVE it's features...
My only problem is my Broadband. I live in Ireland and I have my broadband with o2, it's quick and sufficient for my needs. I have a Huawei E270 usb modem (It's wireless broadband). And it wouldn't Work. I plugged it into my pc with Ubuntu up and running and it opened the File for o2 rather than the Interface for it. When I plugged the modem in there was a green lock symbol on the top right of the screen. Is Ubuntu even compatible with the E270 modem?
how to configure Huawei 3G modem (ec325) in ubuntu 10.04, even i tried with gnome-ppp / wvdial which unable to connect, shows "ppp deamon died" and disconnected at the end of dial.
I am having desperate problems trying to connect to the net with a Huawei E173 USB modem. I was using Linux Mint 7 which I upgraded to version 9 today to see if that would fix the problem but it made no difference. Basically it seems the only time I can connect to the net in linux is if I use the modem in windows and then restart straight into linux, in that case it sometimes gets recognised and works. So at least I know it can work.
I've been trying loads of stuff like usb_modeswitch I found on the net but none of it has worked. Here is what ls-usb gives me -
[Code]....
I am unable to get any work done without the net and I will not have access to a wired connection til the new year.
I have started using ubuntu 11.04 desktop edition recently. And sadly i dont have an internet connection. I have an USB modem of Huawei. But I cant configure that in ubuntu. Im from india and using Reliance Netconnect 1x EC121 modem. Can anybody please tell me how to configure this modem so that I can connect to the internet? Due to lack of internet connection im not being able to download any updates or codecs. I have started using Ubuntu only 2 days ago..
I am trying to get a Vodafone USB modem to work - Huawei K3765 (which is a rebranded E169). It's supposed to be recognized by the kernel and just added through Network Manager, but - no luck. I also installed vodafone-mobile connect from here: [URL] (as well as the other packages). What happens when I start it - it doesn't see the modem. It's seen as a CD drive, and clicking "eject", "unmount" or "remove safely" on it doesn't help - it disappears, then several seconds later appears as a CD drive again.
The problem is I have a wireless Belkin router which I can connect to, but after being connected for a few minutes the net disappears (cuts from the router) and my laptop will have to reconnect again to the router for internet to work again. After a few minutes (or seconds in some cases) the connectivity loss will happen again over an over.
How to fix this problem or some things I can try, I've tried updating to two different firmwares, two different channels and resetting the router. The biggest problem I find is that this happens on both my laptop, another laptop in the house and also my tablet PC but doesn't happen on two other laptops in the house, I've also tested with windows 7 and Ubuntu with my laptop.
My laptop wireless card is Atheros AR9285 802.11b/g/n WiFi Adapter
Basically, I wanted to use the Bootp (PXE) protocol to boot a machine (my laptop) from my network instead of using USB/DVD boot medias to reinstall if need be. My router being a piece of crap, I couldn't setup the DHCP server to allow PXE packets. Confirmed from the manufacturer that it is not possible. Well for a $140 router, you would expect the opposite. Anyways, here I am with a small machine setup with Slack, no desktop environment (only CLI) and connected to my router (which I deactivated the DHCP) so the machine can act as a DHCP server. It works very well. However, I would like to install a few other utilities into that machine and for them to work, I need to put the machine between my cable modem and my router. Basically, here's the topology from outside):
Internet (ISP) --> Modem --> DHCP machine --> Router (no DHCP - acting as a switch) --> computers & printers
The problem is that I cannot connect to the modem from the computers on the network. Also I cannot access the internet (go on the WAN side) from the computers. From the computers (namely my laptop), I can ping the router, but cannot ping the interface where DHCP broadcast. Also I cannot ping the modem. From the router (using the web config page), I can ping the DHCP broadcast. From the DHCP machine, I can ping the modem. In the DHCP server, I setup the eth0 (the interface where the modem connect to) as a DHCP assigned IP so it can obtain the IP from the modem. The eth1 (the interface where DHCP broadcast) is static. All my machines obtains a IP from the DHCP machine without a hiccup.
I'm trying to make a Huawei K3715 HSDPA modem work in Ubuntu 10.04.1. I plug it in, and it loads two mass storage devices (one CDRom containing the Windows software, and one 2GB drive that appears empty), but I don't really know where to go from here.
Note that I replaced the stock network manager with Wicd, as I find it more reliable in picking up wifi connections. I'm not sure if it's suitable for connecting the HSPA modem though.
I've been trying to make my FC13 Dell d620 work with a Huawei 3G usb modem mode E173. I can not switch the device to modem instead of storage with usb_modswitch. This is what I get on lsusb:
Wife's laptop has AR5001 Wireless Adapter laptop model is Toshiba Satellite A215
Problem : Wireless networking randomly loses connectivity and can not regain connectivity, the only apparent solution is a full power down , this is not even certain to work. The card works under Windows, she hates Windows. (I love her for this) I know it's not faulty hardware , because it will work for days on end under Windows without problems.
Things I've tried : madwifi drivers (any and all versions available) : These increase stability of the signal and seem to delay the inevitable however it still happens. When using these drivers the only option is to unload them modprobe -r then reboot then remove them again and re add them. It makes no sense why this works, and if I don't remove them prior to rebooting it will not work.
ATH5K drivers : These are pretty much junk, results are unpredictable at best, sometimes it will work perfectly for a few hours, sometimes it will not work at all. Nothing is repeatable, I can't seem to force whatever condition is causing this. rfkill does not show the wifi being blocked (hard or soft), unblocking it anyway does nothing, only way to make this work and it's iffy is to fully power down wait 5-10 minutes turn it back on and it MAY decide to work.
Firmware update : Updated the Toshiba BIOS to the latest version of the firmware 2.0 no joy here either. Same issue both sets of drivers.
Tried different distros and kernels : I've tried Mint 9, 10 ,11 ; Ubuntu 10.10, 10.04 , 9.10 and 11.04 (which is currently installed) , Fedora and OpenSUSE. All are giving the same problems. I have also tried a slew of different kernels no joy from any of them (I'm not at the computer with the issue now I will post exactly what kernel versions I've used when I have access to the machine).
Another useful bit of information, the hard switch to disable/enable wifi WILL disable it but turning it back on does absolutely nothing. The hotkey does nothing at all. The bios does not have an option to disable or enable the wireless card.
I will also post the typical lsmod , lspci , iwconfig all that good stuff when I get back to the computer in question. I'm probably just going to buy a PC card for it and give up on that one, but this is driving me insane and I would really like to see it resolved even if I do replace the hardware.
I've been trying out the netbook remix of 10.04 but I've been having some issues getting my Huawei modem to work. It detects the install cd and usb storage but it does not discover the modem.
This is the dmesg output after connecting the device:
Code: > [10540.912126] usb 1-4: new high speed USB device using ehci_hcd and address 9 > [10541.055850] usb 1-4: configuration #1 chosen from 1 choice > [10541.060834] scsi12 : SCSI emulation for USB Mass Storage devices > [10541.061799] usb-storage: device found at 9
I have loaded Ubuntu linux 10.04 and Windows XP in my PC. I have CT800P Modem supplied by BSNL for getting internet connection. Though the modem is working properly in XP it is not being detected by Ubuntu. How to configure CT800P with Ubuntu Linux 10.04.
How to install "Huawei E156G Modem" in Ubuntu O.S. Are there any special code for configure it. I plug modem but i can't conect to internet. This message appear " you're offline".
