Ubuntu Networking :: Network Manager Keeps Dropping The Wifi Signal?
Dec 12, 2010
I've got a Belkin F5D8055 v1 wifi usb adapter. I use the rt2800usb driver for it. Strangely it uses only 54 Mbit/s instead of 300 Mbit/s. I thought it was ok, since I use the wifi only for accessing the internet. However, the network manager keeps dropping the signal, and I can't understand why. I'm close enough to the router.
As soon as i'm starting to copy a large file enough file (>700Mb) to my ubuntu box (connected to an Asus router via wifi) from a Windows 7 client (connected to router via ethernet cable) i get a dramatic drop in speed. upload starts at 1,0Mb/sec with a ping to ubuntu box at <1ms, and in 2 minutes it drops to 200kb/sec with a ping of over 1000ms! The ping increases with every second in a linear progression.
To exlude router as a possible problem copying to a windows 7 notebook connected to router via wifi results in an average of 2,7Mb/sec with an average ping of 150ms.
MB Model: Asus P5B Deluxe wifi OS: Ubuntu Server 9.10 + desktop installed Wifi configured via GUI
My wifi connection drops sometimes and, for some reason, Network Manager attempts to connect to my neighbor's network, which requires a password (which I don't know). Is there any way to blacklist a wireless network so that the Network Manager will never attempt to connect to it?
i was fed up after i can't connect to wifi using ubuntu. the problem happened after my router is being replaced to a new one because the old one got struck by lightning. good thing i dual-boot my laptop so i can access the internet using Windows 7 now.
i use the default network manager to connect to wifi before, but it all seem to be failed after the replacement of router. i also used Wicd but it failed to connect either. it says in the notification "disconnected: bad password" but the password was right. my wifi used WEP password with open authentication.
i even remove the WEP password and try to connect, but it failed. all i can do is to boot in windows 7 and surf internet there. what could cause this problem? is it the router, the telephone line? i can set the router settings if i want, but i don't know what causes the problem.
I have eventually (a week's work) got my Ubuntu 10.04 to recognise my Asus N13 WiFi dongle (had to compile the source from Ralink with the "y" against the two things it tells you to if you want network manager to work (source that came with dongle wouldn't compile) and then set up rules (for some reason the driver - rt2870sta - wouldn't recognise the dongle until the rule about the vendor and product ID was in place; and the drivers that come with Ubuntu wouldn't recognise it even with the rule in place)).
Big thank you to chilli555 for all of the posts that got me this far.I would like to use the Network Manager app that comes with Ubuntu, to control the dongle. At the moment it will aknowledge when the driver has been loaded (have to do a modprobe), but does not "see" any of the many WiFi routers around my house, so I can't click on one to select one.
My only guess on this is that, to get the dongle to work I copied the config file that is part of the driver source files into /etc/Wireless/RT2870, and this is getting in the way. However, I have tried removing it and the network manager still doesn't work. Or is it because the network manager needs the dongle to be called "wlan0" and it's called "ra0"? If so, can you aliase this?
I just installed F14 today, all day I have been trying to get my wifi to work, I keep running in problems I found many threads with links to download drivers. I did that and in the README file loses me. It talks about compile driver from the source code.
I have a Ubuntu 10.04 laptop that gets its Internet connection via WIFI using WICD as network manager, and Windows XP desktop with no Internet connection. What I want to do is share my Internet connection from my laptop with my desktop via a Ethernet cable. But i have no idea what to do. How do i go about doing this?
I just installed 10.04, just migrating to linux. I can't see the network manager anywhere. I have the applet installed. I can't get the wifi adapter enabled. The chipset iwl8345 shows on the output when I run config. It seems to me that I need to get the NM up and that should doit. here is ishw:
Our school has a small 3-computer lab in the preschool department where the kids come in and simply use Firefox to access some educational websites. Due to logistics in the building they're in we had to go with a wireless solution in the following setup:
- Apple Airport Extreme WAP - 3 HP DX2200 desktops running Ubuntu 10.10 - 3 Trendnet TEW-664UB USB wifi chips
All was running great until we got the computers installed on site and now they are constantly dropping the wifi connection if they are even able to connect at all (which is highly hit or miss).
10.10 picked up the USB wifi card as soon as we plugged them in and showed the available networks, but actually obtaining and keeping connections is a nightmare at the point. The computers are in very close proximity to each other (only about 2-3 feet between computers) and the WAP is in the next room (other computers and mobile devices are able to connect to the WAP with full signal from the same room/location). Thats about all the detail I have off the top of my head, could this be an interference issue with the wifi cards or does this sound like an Ubunutu issue? Again we have had multiple other devices in that room all able to connect seamlessly.
I have been an Ubuntu user for a year or so. My level is still ultra n00b but I am trying. Whenever I update Ubuntu there is always a WiFi problem, always. So now I am having problems getting wifi to work in 10.10. In Network Manager I can view wifi networks fine but I cannot connect. I tried with wicd also but I got as far as "getting ip" and then it would hang up.
lspci
Code:
Code:
Code:
I am not sure what driver I am using as I don't know how to exactly ID my driver. I know there is a way to ID the driver using airodump-ng but I have yet to find it. I have a feeling this is a driver issue as one time I was able to establish a connection that then dropped a few minutes later. I have a feeling I should be disabling/removing the current driver and replacing it with ipw3945 or possibly a driver ndiswrapped? The problem is I cannot figure out how to remove the current driver.
I was going to switch back to 9.04 but I thought I would try to manually figure this one out instead of taking the easy way.
I just installed x64 Fedora, and as the title says, NM fails to detect my WiFi card. It's an Encore ENLWI-N with a RaLink RT2800 chipset. The card does show up when I run lspci, although iwconfig yields nothing.Not sure if this helps, but when Ias running Karmic Koala, Ubuntu detected the card immediately and required no configuration
Here's the situation: I've got an eee pc 901 running Ubuntu 9.10 netbook remix. I'm using it to connect to a WPA-encrypted wireless network on a WRT54GL running dd-wrt. It mostly connects and works ok, but sometimes it just stops working for no apparent reason (the netbook still shows itself as connected), but you can't get anywhere until you manually disconnect and reconnect. Other times, it will drop the connection, and then quickly reconnect (or sometimes not). Obviously, this behavior is pretty irritating. At first I thought the problem was with the router, but I checked the logs there and they all seem fine, and other computers on the same router don't have this problem. Looking at "dmesg | tail" on my netbook, I see a lot of instances of the following error, which I'm thinking is probably the problem:
I searched for that error message and I found this Ubuntu bug report: [URL] that describes symptoms that match mine. In that report, a poster mentions that he compiled and installed a new version of the wireless driver from the Ralink website, and it fixed his problem. Do you think installing a new driver would be good? Or has that updated driver already been added to the kernel since that bug report was filed? I've never compiled a kernel module before.
One other thing, I also see repeated instances of these lines (or similar ones) in dmesg, which look like they could be related. Code: [44096.275923] RX DESC f30ca000 size = 2048 [44096.276885] <-- RTMPAllocTxRxRingMemory, Status=0 [44096.281404] --> Error 2 opening /etc/Wireless/RT2860STA/RT2860STA.dat [44096.281424] 1. Phy Mode = 0 [44096.281435] 2. Phy Mode = 0 [44096.309841] 3. Phy Mode = 0 [44096.314533] MCS Set = 00 00 00 00 00 [44096.316196] <==== RTMPInitialize, Status=0 [44096.316280] 0x1300 = 000a4260 [44096.401269] ==>rt_ioctl_siwfreq::SIOCSIWFREQ[cmd=0x8b04] (Channel=11) [44096.472502] ===>rt_ioctl_giwscan. 1(1) BSS returned, data->length = 116 [44096.472977] ==>rt_ioctl_siwfreq::SIOCSIWFREQ[cmd=0x8b04] (Channel=11) [44106.768056] ra0: no IPv6 routers present
I was running windows vista 32 bit (NOW UBUNTU 9.10) on my custom built pc with a TP-LINK TL-WN353GD wireless pci card, before on vista my wifi signal strength would be in the low 70% range with a speed of 54 Mbps from a access point roughly 250 yards away, now with ubuntu 9.10 signal strength in the 15-20% range with a speed of 1 Mbps. My question is, what is the best way to overcome this wifi signal strength and speed problem, it is a noticable performance disadvatange easily seen on a website like ..... where as before videos would play 95% of the time without having to stop and catch up, would a different wireless pci card be a better choice than what I have, or is the problem in the software as in a driver incompatability or lack of correct driver, not sure how to remedy the problem.
i'm surrounded by concrete block wall but have found an unlocked wifi signal. but i need to do something to help boost the signal. my HP laptop has a built in wifi card and i'm looking for something that i could use or do to help boost the signal.
I just installed 10.10 on a Dell Inspiron 1300. The wired connection(eth0) works fine but I get no wireless signal when I unplug and try to connect to my network/internet. It shows that wlan0 does exist but it gets no signal. I've used the rfkill to make sure that it wasn't blocked and everything seems to be ok, except I get no wireless signal.
I uninstalled Network Manager and installed Wcid and it found nothing. I even tried installing several signal scanners I found in the package manager. I've removed, updated and reinstalled the broadcom drivers. I still get nothing. The wireless signal from my router is nonexistent according to Ubuntu.
The wireless works fine when I put my windows XP HD in and it also works fine when I put my Mepix or PCLinux OS HDs in the laptop. So I know that the wireless card is not busted.
I'm using 9.04 on a laptop .when i was useing windows I got strong full bars for the wifi signal strength. On the same laptop in the same location, I get only 2 bars (low) wifi signal strength when I'm in Ubuntu 9.04 I'm using the wifi transceiver built into my hp Anyone heard of this problem?
I have discovered the world of freewares not long ago and it surprised me! To go a bit further, I have installed Lubuntu 10.4 LTS on an old laptop: HP Pavilion zv5326 with 256 Mo RAM.
Everything works fine except the wifi.
iwconfig returns for wlan0: IEEE 802.11b ESSID:"Livebox-afe5" Mode: Managed Access Point: Not-Associated Tx-Power=0 dBm Retry Long Limit:7 RTS thrff Fragment thrff Power Managementff
Ifconfig returns nothing for wlan0
From what I understand, my wifi card is recognized so I do not need to install a driver with ndiswrapper, right?
What should I do then? Is there a solution at all?
(Livebox-afe5 is the wifi connection I use with my other laptop.)
I have been using windows 7 for awhile now, and i was using connectify (an internet connection sharing program that turns your laptop into a wireless router), and i'm planning on completely switching to Linux from a dual boot, and i was wandering if there is a way to share an internet connection (mainly to my PS3) on Ubuntu 10.04 x64, and wirelessly if possible, though i wouldn't mind if it was through Ethernet.
since the upgrade i see all avaible wifi networks as they have 100% signal, both in NetworkManager and Wicd.in iwconfig and iwlist the signal levels change, but the link quality remains the same: 70/70 (see below). What could be worng? What can i do?
I see the Wifi Signal Strength icon on the top bar, but where's the label that shows the signal strength percentage? Is there a way to re-enable the label or did Canonical deemed it to be unnecessary?
Here is the layout of my network:My cable modem plugs into eth0 on my ubuntu server which acts as a firewall (shorewall) and dhcp server to my lan. A dd-wrt access point is plugged into eth1 and then a bridge connecting my xbox360 and another bridge connecting a desktop computer.Everything works pretty well, except a few times a day, my network will just shut down. The wireless on my macbook and my wife's laptop will just shut down, and if my xbox is running, it will lose connectivity. It will be down for maybe a minute or two, and then come back up like nothing ever happened.I never had this problem when I had just a dd-wrt router running everything instead of my server.When I ssh into my server afterwards and run dmesg, this is what I will get:
Code: [398598.251548] martian source 169.254.1.255 from 169.254.1.33, on dev eth1 [398598.251565] ll header: ff:ff:ff:ff:ff:ff:00:23:69:3d:b1:82:08:00
My network seems to be dropping every few minutes to few hours. There are a lot of networks in the area (apartment in NYC) and I wonder if it might be due to competing traffic. Any ideas for how to tell what channels other networks are on? or other modifications to router settings that might improve performance in this situation?Additionally the "Invalid Misc" in iwconfig is counting quite quickly.
I happened to Fedora 13 that the network manager does not indicate any wifi network and I had to turn off the notebook for a while and then recover, this also happened to me 2 or 3 times on ubuntu 10.04 too. my card is an Atheros AR5007EG.
I have a windows installation (partition) but have installed into freespace on the same drive using the auto-partition manager, etc, and everything is fine. I got my network going fairly easily by going Preferences > Wireless and inputting SSID and WPA encryption key (PSK). My router issues an WLAN IP, I can get on the net, I can see my other Windows PCs on the network, I can reach my router, and all is good.So after several hours of mooching about and looking at things, I have updated all the Linux packages via Synaptics (following a prompt to update everything) including GRUB. My dual boot now shows two versions of the OS:
GRUB 1.7~Beta4 Ubuntu, Linux 2.6.31-19 - generic (I am booting this one) Ubuntu, Linux 2.6.31-14 - generic
I also set up my HP F4580 printer over wifi on the network though with slightly incorrect drivers (for the F4400 series as this was recommended at the closest match). It works, and I can print a test page no problem.The only thing is that now (since doing all that) Ubuntu seems to periodically drop my connection to the network and then request the network PSK again, but when I enter it, it spends time trying to renegotiate but fails, and then re-requests the PSK, over and over and it never reconnects. I have to reboot and then I can connect again (automatically), until it drops at some random point (like 5 or 10 mins later)
Within the last couple of days or so, my wireless has been on the fritz. It keeps disconnecting and reconnecting every minute or so, which is annoying to say the least. The information relating to my wireless network is:
I have an old PowerBook G4 that I would like to use as a 'dummy' computer for learning wireless penetration (WEP/WPA attacks) more effectively. I had been using a wireless router, but I gave it away I can use Mac OS X to share an ethernet connection over wifi, but this is _very_ un-configurable. You get two options only, WEP and a key-length. So, I would like to install someway to make this wireless connection more configurable.
I upgraded from 9.0X to 10.04 on my Sony Vaio VGN-TZ398U which has an internal Sprint mobile broadband card. The card operates properly along with the wireless. The problem that I am having since upgrading is that the Network Manager Applet icon that looks like a cell phone bar display does not show in the notification area at all unless there is a known wireless (wifi) network nearby.
Clarification: If I am in my car, the icon does not show which then makes it impossible to connect using the mobile broadband functions of the Network Manager Applet ( version 0.8 ). If I am in my office with a known wireless network, the icon shows and then I can switch to the mobile card.
I have tried removing the notification area from the panel and adding it again. I have done the same with the indicator applet. Neither has solved this problem.
I'm running Debian testing. I am running the iwlwifi driver and I have an Intel Centrino Wireless-N 1000 card. I have a fresh install of iwlwifi and network-manager. After sleep or after being shutdown, network manager cannot find my network's SSID. I have to wait ~5 minutes for it list my SSID. I dual boot this laptop with Windows 7, and on Windows, I connect to the internet instantly after boot. I did not have this issue before, the only thing I have changed was installing blueman and the necessary components. After I installed and uninstalled these bluetooth components, I have been getting these problems. Here are some outputs:
iwconfig: Code: Select alleth0 no wireless extensions.
wlan0 IEEE 802.11bgn ESSID:"Dotcom" Mode:Managed Frequency:2.462 GHz Access Point: 14:AB:F0:3D:DC:20 Bit Rate=81 Mb/s Tx-Power=14 dBm Retry short limit:7 RTS thr:off Fragment thr:off Encryption key:off
wicd keeps dropping my wifi connection most of the time I can just tell wicd to reconnect the connection never stays up for more than 10 minuets with out doing other times it looks like it connected when it didn't other times it times out when obtaining the ip address in these 2 cases I have to run "etc/rc.d/rc.wicd restart then tell it to connect sometimes posting on forums requires me to copy my text hit submit hope the connection is still up maybe restart wicd reconnect.is there a bug in wicd or python ?
