Ubuntu Networking :: 3G USB Modem TechFaith Unstable Workaround
May 2, 2010
I have an USB 3G Modem to access broadband internet.The USB 3G Modem is a flying angel from TechFaith company.The modem works fine under Windows XP. The USB 3G Modem propose a data partition with an automatic installation of its driver and software. When I plug the device to the 9.04 Ubuntu workstation it mounts the data partition, but does not find the 3G modem device. I search the internet to find a solution, and the only working solution I found is the following. However, this solution is not stable, after some minutes the device is dropped (no more ttyUSB). I can not use the same process to enable the device.
Code:
su -
eject /dev/sr1
modprobe -v option
echo "1d09 1026" >/sys/bus/usb-serial/drivers/option1/new_id
[code]....
I used the wizard to configure the braodband access (Brunei/B-mobile). It works for somes minutes, and then the connection drops, the /dev/ttyUSB desappears and I can not redo the process.I have to enter the commands in a root shell, the sudo command will not enable the device. Why it does not works with sudo?
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Apr 23, 2011
I recently upgraded from Debian Lenny to wheezy (testing). I use a popular 3G modem, the Huawei E220. In Lenny everything worked fine. I use wvdial to connect and the script from lenny, which worked just fine.Unstable behaviour goes like this:I connect, pppd starts, then, either immediately or after a few seconds, the modem hangs up (pppd errorcode 16). Upon retry a SIM Error is being thrown or the /dev/ttyUSB0 node vanishes. Un/Re-plugging the modem and dialing again results in a working connection (mostly). Is there any possibility finding out why the modem hangs up (because a web research revealed that there are a million possibilities for this behaviour)?
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Feb 2, 2010
I recently installed KDE in my ubuntu machine. I would like to try it out for a few weeks at least, but networking is not working at all.
I somehow managed to find the network settings and it shows no connections, wired or wireless. When I log out and log back in with gnome, my wireless gets connected automatically.
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Mar 23, 2011
find and install modem driver for the Alcatel X200 USB modem?
I've been all over the internet trying to locate Linux drivers but no success. Alcatel's website says is not supported, only in Windows. I'm sure there's gotta be a way to use the X200 in Linux.
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Feb 8, 2010
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
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Jan 25, 2011
I have a "bad password" reply using wicd 1.7.0 with WPA and a preshared key within Ubuntu 10.10, i.e., I am unable to make automatic/repeatable wireless connections using wicd without a workaround.
I believe this may be a problem interaction between wicd and the way wpa_supllicant is passing the (preshared) key to the network authority (the router). In my case, I use a Linksys WRT54GL running DD-WRT v24-sp2 (10/10/09) std - build 13064 OpenSource firmware, configured as an Access Point in Mixed mode (b/g).
I have no problem authenticating WPA Personal TKIP or AES from Windows or Mac OS X clients with a variety of wireless adapters (Linksys, D-Link, Lucent, Airport (Mac)) (No intervention is required to produce the secure connections).
With wicd 1.7.0 and wpasupplicant 0.6.10-2 (wext as wpa_supplicant driver selected in wicd by default) on Linux 2.6.35.-24-generic (Ubuntu "Maverick Meerkat") and a Lucent Orinoco Gold 802.11b wireless adapter I am able to connect to the network initialy (one time) without the "bad password" error.
After the initial successful connection, reconnection is not possible (the "bad password" error) ***unless the wireless security settings on the router are re-applied. Once reapplied/resaved, a subsequent attempt to create a wireless connection from the Linux client will succeed without any changes having been made on the client side.
The psk data being sent to the router (with respect to the Wireless security settings) is being cached in such a way the connection is initially possible but defeats subsequent attempts at connection. Perhaps the passkey is cached/stored on the client side (after it is used to make the first connection) in such a way that it will be sent incorrectly upon subequent attempts at connection? Of course, I'm simply guessing, here ... it is by luck that I found the workaround to establish this wireless connection.
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BTW, FYI, I was unable to use the Gnome Network-Manager to establish any wireless connections at all. Thus, Network-Manager was uninstalled (sudo apt-get purge network-manager) during the installation of wicd (Ubuntu Software centre). wpa_supplicant was re-installed (Synaptic) after wicd was installed.
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Jan 8, 2010
During Karmic betas, my Marvell 88E8056 did not work at all. When Karmic got released, it started working but after December update, become terribly unstable, disconnecting like every 5 minutes. It is integrated on P5Q-E mobo. Luckily, I also have Marvell 88E8001 so I switched and it works. I was thinking that new kernel broke driver, and thought that next update will fix it. But yesterday I needed both NICs, and 88E8056 is still did not work. I am using .31-17 kernel. So I do not know if my NIC died or what? Can someone with same NIC say if it works for him? Does it work in Lucid Alpha 1 ?
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Mar 6, 2010
I have just switched to Ubuntu from Win 7 RC. So far its been fun, learning to use terminal and all. But I have got a problem now I cannot find a solution to.
I am using 3 Mobile Broadband. The thing just worked - I plugged it in, created a new connection, modified config a little and was happily browsing.
However, it started acting out yesterday. When I boot the system with the modem plugged in, the USB stick is recignised and NetworkManager starts connecting (I have auto connect on). It then shows the "connected" message, and generally appears working fine.
On the other hand, I cannot open a single page in Firefox, it shows the default server not found page.
I used the approach Windows taught me: close, open, retry. I unmount the 3 Mobile Broadband drive, pull the modem out and reconnect it. NetworkManager then does it's job and this time everything works.
I nether had this problem in Win7 or Vista. It looks to me something goes wrong during the booting when the modem is plugged in.
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Jan 4, 2011
A fresh Xubuntu 10.10 install will give me access to my network, but with fluctuating speeds, and certain pages load forever. I have tried the blacklist edit as well as ndiswrapper, and neither have helped me. I can't find a madwifi guide for this issue either. Details: Upon fresh install of xubuntu 10.10, wireless is detected. I enter my, key, hit google, and all is good. Then I try to log into my online classes. Firefox hung forever. So I tried a few other sites, and to my disappointment, random sites seemed to fail. Brand-new, fresh, clean Xubuntu 10.10 install, Toshiba Satellite M45-165.
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May 24, 2010
I understand that wireless is one of the most common problems with Linux, although I did not have this experience with past distributions or versions. After two years away from Ubuntu I installed 10.04 and everything is working fine except the wireless connection. Actually, it does work and connect, but goes up and down, loses connection and in most cases does not reconnect, unless I am 1 meter from the router. The room next door is already too far, a place where I normally have my laptop connecting perfectly with XP.
I am using a Toshiba M70,some additional information below:
lspci=
00:00.0 Host bridge: Intel Corporation Mobile 915GM/PM/GMS/910GML Express Processor to DRAM Controller (rev 03)
00:01.0 PCI bridge: Intel Corporation Mobile 915GM/PM Express PCI Express Root Port (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 2 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #1 (rev 03)
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Oct 12, 2010
10.04 Gnome desktop install on Acer Aspire One netbook, wifi connection very unstable since last round of updates, wondering if ndiswrapper would work better
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Oct 27, 2010
I have Ubuntu running on my HTPC and for the longest time all this was working fine. Now all of the sudden my Internet connection is all sorts of slow. Chrome browser, transmission bt, apt-get, all have the same speed issue. I tried disabling IPv6, changing my DNS and installing all the latest updates. Nothing works.
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Dec 7, 2010
I'm using a notebook with Intel 4965AGN and connecting to a Linksys WRT320N router. I can connect most of the time but after a while (sometimes a few minutes, sometimes a few hours) I lose connection. The notification icon would not change. I would only find out when I browse or click on a link and it would just get stuck at "Looking for <url>..." My wife's notebook would still be connected to the router even after mine has mysteriously disconnected. But she uses another os.
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Mar 11, 2011
Im new to linux (2 days only) so i have some driver problems. My internet connection is unstable. It reconnects every few minutes (5 min approximately). Im connected with wired dsl connection to routher. My network adapter is "Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller". I use Ubuntu 10.10 Maverick Meerkat release, kernel 2.6.35-27-generic.
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May 19, 2011
I'm using an Atheros ath9k wireless card that has been pretty stable since Ubuntu 9.04. I did a clean install of Natty and ever since my wireless connection has been pretty unstable.
It doesn't actually disconnects but I lose all connectivity. The wifi card continues loaded with a static IP Address assigned to it but I cannot connect to anything. The only way to fix it is restating the network manager and I have to do it at least a couple of times every day.
I tried to whitelist ath_pci on /etc/modprobe.d/blacklist-ath_pci.conf but the problem still persists. Also yesterday I enabled the ubuntu backports on my software sources but so far no kernel updates.
Here are some of the messages filling up the logs:
I added all this info to this bug as well: [url]
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Aug 9, 2010
I'm having trouble with my Samsung Netbook N220 and its Realtek 8192 wireless card and could use some help with diagnostics. I would like to use the netbook as a server and after a day or so the system stops responding. What I'd like to know:
- What do the "========>ieee80211_parse_info_param(): athros AP is exist" spam messages actually say? Does anyone else have this and stability problems?
- Why is the realtek driver package not working?
I'm running Ubuntu Netbook 10.04/Kernel 2.6.32-24-generic. Initially the card was unable to connect, so I installed the Realtek driver rtl8192se_linux_2.6.0017.0507.2010 which adds a kernel module r8192se_pci.ko. At first my system was hanging during bootup. I then restored /lib/modules/2.6.32-24-generic and now the card is connecting but the system is unstable. The 2.6.32-23-generic kernel, modules listed below, still has modules as installed by the realtek driver and is not working. Below the drivers supplied by ubuntu
./2.6.32-24-generic/kernel/ubuntu/rtl8192se/r8192se_pci.ko
./2.6.32-24-generic/kernel/drivers/staging/rtl8192su
./2.6.32-24-generic/kernel/drivers/staging/rtl8192su/r8192s_usb.ko
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Dec 27, 2010
My netbook model is Asus eeepc 1201n and I'm running Ubuntu 10.10 but I had the same problem while running 10.04: wireless disconnects and reconnects every 30 minutes or so and, after this has happened for a few times, it doesn't reconnect and keeps asking for the password.
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Jul 2, 2011
Every time I download torrents in Ubuntu 11.04 on my desktop, using Transmission or Deluge clients, the wireless transfer speed abruptly drops off, becomes very choppy, and in general doesn't remain stable. It's not only the torrent download that slows down, but it's everything including web surfing, even though I'm not maxing out my connection speed. It's not that I'm getting disconnected from my router, it's just that the wireless transfer speed drops off, becomes intermittent, and never gets back up to full speed.
At first I thought that my ISP was throttling my connection, but this issue doesn't happen with a direct cable connection to my router, nor did it happen when I was running Ubuntu 10.04 before. It also doesn't happen when I'm downloading the exact same torrents over wireless using my netbook running Ubuntu Netbook Remix. This issue ONLY seems to happen when using a bittorrent client while on wireless on Ubuntu 11.04 on my desktop. I can max out my internet connection speed by streaming videos, downloading from FTP, etc. using wireless just fine, and the transfer speed remains stable. This also seems to happen with a couple of different wireless USB adapters (rt73usb or rtl8187 drivers).
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May 2, 2010
Since I upgrade to Ubuntu 10.04 my wireless connection is very unstable. I install the needed wireless drivers from 'Hardware Drivers' (Broadcom STA wireless driver) and I got wireless connection, but it randomly disconnect, and also connection is very slow.
I think that the problem are the drivers which are not very compatible with this version of Ubuntu, which means we need to wait for update? I have HP ProBook 4510s laptop, Intel PRO/Wireless 5100 AGN network card & Gembird NSW-R2 router. I'm only having this problem on Ubuntu 10.04, on other OS's the internet is fine.
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May 13, 2011
This is my first use of Ubuntu, but I have previous decent experience on Centos & Mandriva. I've just installed Natty 11.04 on a box that was running a mandriva 2010 - and the network is acting quite strange. When I define a static IP for eth0 through the gui, along with route & dns, it sort of works: ssh is fine, vnc too. However, I have an asterisk running on the box, and it is wild: some packets get lost in the box.
An ngrep shows the packets reaching the interface, but they dont show in asterisk !!! I've done a ufw disable, iptables is empty (why cant I service iptable restart btw ?). ip route list show decent routes (eth0 default); When I switch to DHCP, it is better, but unstable... If i plug a wifi usb stick, it seems to be better... Is there some known issues that could explain this behaviour ? The nic is a: Ethernet controller: Marvell Technology Group Ltd. 88E8001 Gigabit Ethernet Controller
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Sep 10, 2010
I am succesfully installed a Dell wireless card with Broadcom 4328 shipset using ndiswrapper and rpm sources on Fedora 12 2.6.32.14-127.fc12.i686.PAE. Now I am using original Win drivers but the wifi conection is very slow and unstable.
The wifi card runs perfectly on win 7.
This is the lspci -vvnn outpput
03:00.0 Network controller [0280]: Broadcom Corporation BCM4328 802.11a/b/g/n [14e4:4328] (rev 03)
Subsystem: Dell Wireless 1500 Draft 802.11n WLAN Mini-card [1028:000a]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
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Mar 26, 2010
There is an issue with kmenuedit. It was complaining that it couldn't write to /home/usuariokubuntu/.kde/share/config/kmenueditrc. But even running it with sudo, the behavior was strange (the applications weren't saved at the menu, and everything was very slow - like taking 40 seconds to create a new item at the menu). It seems that the problem was that the file /home/usuariokubuntu/.kde/share/config/kmenueditrc was setted as owner and group as "root". I've changed the ownership and the group of that file to the user owner of home (in my case, usuariokubuntu), and it is working fine now. So, I would life to report this, so developers can fix the issue. I've upgraded a completely clean instalation of kubuntu 9.04 to 9.10, so I don't know if the issue also happens when directly installing 9.10.
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Aug 30, 2010
I am severe wireless problems with Ubuntu 10.04 on my laptop.(Spec below)
I have just performed the first clean install since new. Installed a new Hard Drive as well. The machine and wifi was fine under Ubuntu 9.04.
It is booting much faster now but the wifi keeps dropping off.
Spec:
Machine - Acer Aspire 4310
Wireless card - *-network
description: Wireless interface
product: AR5001 Wireless Network Adapter
vendor: Atheros Communications Inc.
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May 27, 2010
My 9.01 worked fine since upgrading to 10.04 i find the boot process hangs for about 30 secs displaying
'boot from (hd0,0)
Starting up'
I have googled this problem and the only thing i could find is that disconnection the dvd drives sorts it! but i cannot find a workaround.
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Oct 8, 2010
I have the issue described in [URL]... Workaround A allows me to boot, but to make changes permanent, the above suggests I run the following command: echo options i915 modeset=1 | sudo tee /etc/modprobe.d/i915-kms.conf sudo update-initramfs -u But when I do this I am told that the 'u' parameter does not exist in tee. There are only 'a' or 'i' parameters.
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Oct 14, 2010
Workaround for: GPG Errors: If you get the following error message:Quote:W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used.GPG error: http://extras.ubuntu.com maverick Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 16126D3A3E5C1192W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/maverick/Release Run:
Code:
gpg keyserver keyserver.ubuntu.com recv 3E5C1192
gpg export armor 3E5C1192 | sudo apt-key add -
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Aug 8, 2011
Running natty. Main user account. In Ubuntu & Ubuntu Classic, both gnome, no keyboard or on-screen keyboard input. Compiz & metacity both bad. Mouse okay. Other user accounts okay. KDE okay.
Tracked problem to /home/{user}/.gconf/desktop/gnome/session/required_components/%gconf.xml. Removed file, problem goes away.
File contents:
<?xml version="1.0"?>
<gconf>
<entry name="windowmanager" mtime="1303412016" type="string">
<stringvalue>compiz</stringvalue>
</entry>
</gconf>
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Jan 7, 2010
I recently upgraded to Thunderbird 3 using the ubuntuzilla script. One of the great new feature is the so called 'Smart folders' which lets you view all of your mail from different accounts in one list. Since I have set up automatic rules to sort mails from different people and mailing lists in different sub-folders I wanted to include these in the list too. However very time I tried to get Thunderbird to include sub-folders from my different accounts, the settings would reset itself - but now I think I might have found a fix:In your Thunderbird folder find the folder called 'smart mailboxes'.Right-click the file 'Inbox.msf' and select 'Properties' (I think it's called this i'm on a Danish system)Go to the 'Rights' section (again this is what I think it's called) Set your own rights to 'read' only, exit Open Thunderbird Right-click the Smart folders Inbox and select 'Properties'.Choose the folders you want to include, remember to check 'Match all messages'
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Aug 22, 2010
Finally got my Lenovo X201 up and running by combining a couple of different workarounds suggested for the graphics driver problem that is plaguing so many. This works on my X201 3249CTO, running BIOS version 1.17, with Ubuntu 10.04.1 (kernel version 2.6.32-24). I have tested it to differing degrees with all four relevant installers (32- and 64-bit, desktop and alternate).
STEP 1. Add "xforcevesa i915.modeset=0" at install. When you first start the desktop installer, you should see "ISOLINUX..." in the upper lefthand corner of the screen, followed by a couple of white logos at the bottom of an otherwise blank screen. As soon as you see these logos, press the space bar to get the advanced install menu. If you are using the alternate installer, you will get the install menu automatically.
--Make sure "Install Ubuntu" is highlighted. Press F6. You should see the install command line near the bottom of the screen, plus a popup menu with additional options. Pres Esc to close the popup menu. A cursor should appear at the end of the install command line.
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Apr 8, 2011
I'm trying to find a workaround for the keyring requirement when auto-login is enabled.Here's my setup:I'm primarily using my Linux computer as a server, for Git, FUPPES, OpenVPN, etc. Because of this, I do everything remotely from another computer (Windows 7). Most tasks I need to do I perform through SSH, but sometimes I use VNC to see the desktop, since some things are just easier with a GUI.My problem is this: I have auto-login enabled, because of how I use the device. However, when it first boots up, I'm unable to connect with VNC unless I physically go to the computer and type my password into the keyring pop-upDoes anyone know of a way around this? Is there a way for me to input my password into the keyring through SSH, by invoking libpam-gnome-keyring somehow? I've tried to locate this application
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