Ubuntu Networking :: Connects To Some WiFi Signals But Not Others
Mar 4, 2011
i noticed today that the last three places ive tried to use wifi at (a friends house, my cousins house, and my moms office wifi) refuse to connect, even after triple checking all the passwords and trying various security protocols (WEP 40, WEP 128, etc.). strangely, last weekend i was able to connect to a hotel wifi signal with no trouble. even stranger, my ipod touch is able to connect to all these places. at my friends house, we even tried an ethernet cable but ubuntu didnt even know it was there. im a little concerned about this, as i might need to connect to wifi for something really important and ubuntu wont cooperate.
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May 7, 2010
I can normally connect to most wifi connections, but for some reason I can't connect to my broth's-gf-parent's network. Windows 7 can connect to it just fine, but not Ubuntu. Once in a while I'll go to a cafe, and this will happen there too.hough, like I said I can normally connect to all other wifi networks with no hassle
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Nov 23, 2010
Let me start by saying that I am new to ubuntu, and that I always use forums as a last resort.
I installed ubuntu 10, and immediately after the Wifi card deected my network name, and actually connected to it, but then I opened up firefox and....no internet.
Since then I have been trying to fix this problem, and after some research I found out that my card (PCI Cwp-905) is RT2760 based, and I downloaded the linux RT2760 drivers for it.
The driver folder contained a readme file with commands you should enter to install it, and other setup files.
The problem: every command I typed in didn't work. I tried "make", and then "sudo make", but just got permission denied each time. I am now at a dead end. (Please note that I changed my directory to the folder location before doing this)
Does anyone know what I am doing wrong? If you want I can attach the driver files.
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Feb 28, 2011
Another issue I'm having, considerably more serious, is my ability to connect to wifi access points with proxies. The story goes, my school has free wifi, but you have to go through their proxies to access the internet (like at McDonald's or Starbucks, where you must 'log in' and accept their usage terms). I can connect, including DHCP, and when I type in any URI I get the redirect posted to Chromium's address bar, but I simply cannot connect to it. This has happened in Ubuntu and Arch, using at least a couple different network management methods (I usually use WICD but I think I started off with networkd). The strange thing (to me) is that my Android phone works just fine, so although I'm not completely familiar with Android on this level, I don't imagine it's the fault of Linux itself. but I'll only be able to experiment with this once a week, on Saturdays (when I have class --gotta do something entertaining).
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Nov 11, 2010
trying to run 10.04 netbook live from a memory stick with a view to installing it on my laptop. However although I can see my wireless router and connect to it I cannot access the internet. I have tried this on my laptop and desktop with the same result. I was however able to download Seamonkey browser using the software manager....this also cannot access the internet. Both of my PC's have no problem when using XP or Linux Mint.
I have also discovered that if I piggyback, using Ubuntu 10.04, on a neighbours open wifi link I can gain access to the internet. My wifi is using WEP protection but as I said I can set the link up to the router, entering the appropriate key code, and have a good signal strength, I just cannot access a google search page.
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May 2, 2010
Installed Lucid yesterday. Rebooted and lucid seen my wifi connection but after a few mins drops the connection and will not re-connect. Now, I cannot get it to connect at al even though the WPA password is correct, and rebooting to Win7 shows no problems there.Looks like it's back to go old wicd,
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Jul 4, 2011
I've got an Asus EEE 1000HE, and it's worked fine for a long time with the EEEBUNTU distro (a distro based on Jaunty (i think) with a custom kernel). Unfortunately, Eeebuntu is no longer maintained, so I recently did a clean install of Ubuntu 10.04.2. I am now unable to get my wifi to work reliably.
The wifi tries to connect for a while, then pops up the "Wireless Network Authentication Required" window. If I hit "connect" it will try again for a while, then pop up the window. Etc. Note I know that my connection information is OK. I haven't mistyped the password (see below). Also note that the wifi antenna is turned on. For example, iwlist scan is able to find my network.
There is a weird twist though: The netbook is always able to connect through an ethernet cable on eth0 just fine. If I boot the netbook with the ethernet cable plugged in, the wifi instantly connects as well! I can then unplug the ethernet cable (eth0 goes away), but I am still able to use the wifi connection for about 5 minutes before it disconnects, and goes back to trying and failing to connect.
This behavior is 100% replicable--the wifi always works fine (for about 5 minutes) if it boots with the ethernet cable plugged in. Very rarely, the wifi will also connect on boot without the ethernet cable, but that is not replicable.
Other EEE netbooks seem to have issues with multiple wireless drivers, like in this thread. Perhaps something similar is happening here? My card seems to be using rt2860sta as a driver. I tried blacklisting it, to see if another driver was trying to load instead, but that just negated my wifi altogether. (It's unblacklisted again)
My router is a very reliable Linksys WRT54GL with factory firmware which has never been flaky.
I'm at my wit's end. This netbook will be useless without wifi.
Below is the suggested information for a first post:
Here's lspci (note there is nothing listed as "Wireless Brand" to grep out):
Code:
lspci
00:00.0 Host bridge: Intel Corporation Mobile 945GME Express Memory Controller Hub (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GME Express Integrated Graphics Controller (rev 03)
[Code]....
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Feb 6, 2011
I have an old dell desktop with a belkin wifi dongle that connects to the internet right away when i boot in live cd mode but when i try while its installed/installing i get the connecting animation on the wifi, thing, on the top bar.it connects then loses connection and cannot reconnect 5-10 minutes later. this is driving me crazy, i have homework and i just need this thing on the internet already so i dont have to stress my macbook with a minecraft server
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Aug 6, 2010
I know Windows forward and backward but I am so new to linux it's just wrong. I just installed fedora (like 1hr ago) on and old toshiba laptop with a WiFi PC card. Everything seems to work fine except. My Networks connects to my home Wifi network but it will not connect to internet. When it connects the IP address isn't even close to being in the same range as my other laptops and PCs. Like I said I'm new to linux but I'm wanting to learn. Any fixes for this issue? Which linus book is the best one to read for a beginner? Other then not connecting to internet I have no complaints.
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Aug 27, 2015
I've been using Debian for about 6-7 months now. I've had a bit of a major networking problem for the past 4 months or so that I've been trying to fix - specifically, it started when I upgraded to Jessie. I can connect to wifi just fine, and sometimes I can even use the internet for brief periods of time (exceedingly rarely). Then... nothing. No network access, period. I can't ping any outside servers, I can't ping other computers on my network, and I can't even ping my router. Pages I try to load just stay "connecting" for all eternity, network printing fails, and so on.
So after four months of searching online (I've read through way more wireless documentation than I care to say), I finally gave up and admitted that maybe I screwed something up during upgrade to Jessie (as a matter of fact, I did, I had to do the upgrade in two increments [somehow] because my root partition was too tiny by mistake) and I did a clean install. Since I had /home on a separate partition, I was able to keep all my user files, but all settings regarding networking were wiped. So after installing firmware-iwlwifi so I can use my wireless card, I tried connecting to wireless! Success! Then I tried connecting to the internet... success! Briefly. The next morning I tried using the internet again, and it failed in exactly the same pattern as before.
I don't know much about what's going on here, but here's what I do have available:
I do have to use firmware-iwlwifi, which I installed by doing apt-get install firmware-iwlwifi. I don't think it's an issue with the wireless card itself (hardware-wise), the laptop dual-boots Windows 7 (that I never use anymore), and Windows 7 is able to connect to the internet just fine. Connecting directly to my router by ethernet cable works fine, I have perfect internet/network access then.
I can confirm that my laptop is receiving an IP address and that it is using ARP correctly to get the MAC address of my router (I confirmed this by doing the arp command, it has the MAC address correct, I checked from another computer with my router's config page) All other computers on my network work perfectly with my router. To confirm the router/its configuration isn't at fault, I did a full factory reset of the router, but to no avail.
Out of curiosity I tried installing Wireshark (using an ethernet cable to download it) to monitor what happens when I try to access a webpage. I'm no expert on networking, but I noticed something out place when I compare a capture from the affected computer to a capture from one operating normally - there are a lot of STP packets showing up. I did some checking around, it looks like STP is involved in bridging and more complex networking setups (involving switches, for example)... but it shouldn't be found on a home network, especially where there's no bridging whatsoever. These STP packets don't show up on packet captures done from any other computer. I've attached a packet capture from the affected computer here, since the forums won't let me attach a .pcapng file.
Here's the output from a few commands I ran during past troubleshooting sessions:
Code: Select allsudo ifconfig
eth0 Link encap:Ethernet HWaddr e0:db:55:b5:fe:06
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:12455 errors:0 dropped:0 overruns:0 frame:0
TX packets:7781 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
[Code] ....
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Jun 8, 2010
When my router switches off... the wifi signals go off... then why the hell ubuntu keeps on connecting to that very wifi like hell and when doesnt connect shows the prompt to manually connect... with the wifi key already filled in... whats the use of saving the key when it has to ask the question from me either to connect or not?? and if its isnt available... just wait when its available.. and for the prompt,i have only option to cancel(because wifi isnt available at that moment if i select connect it again tries to connect like hell..which it cant) and if i cancel it wont auto-connect when wifi does get available! what the heck?
Windows has this done the right way... when the wifi isnt available.. it dissconnects silently.. and when it becomes available connects silently.. why isnt this been done this way in ubuntu??
Ive attached an image..one can see in the image that it says "authentication required by wireless network" when there isnt any.. as router has gone down!
And the second thing i want to report is that there is no way to report this bug from ubuntu... the launchpad.net talks of going through bug reporting process which is done against a definite package... now how does a user know which package would be causing this error?? there should be a more clear process of reporting such bugs to ubuntu team... which a common man using ubuntu( ubuntu says its most user friendly of all distros right?) can report..
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Sep 16, 2010
barley got it today in fact, have my laptop dual booted running Win7 and Ubuntu 10.04. I haven't worked with the terminal at all so i have no idea what I'm doing with this. I'm having a problem connecting to the wireless Internet. It has theicon at the top but doesn't recognize any signals. Works fine using land line though. My laptop has the wifi on/off button on it but that doesn't seem to be doing anything
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Aug 7, 2010
I can't pick up any wireless signals while running Ubuntu 10.04, but while running Windows 7, I pick them up. I have the feeling it's because of a missing driver, could anyone help me solve this issue?
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Sep 7, 2010
I had windows and 8.10 earlier and now have single boot 10.04 !
1.) I can see wireless networks only after I am connected to the router through wired ! I guess its some thing to do with me activating ifup and ifdown, when my wired connection stopped working as i was trying to install wireless drivers.
2.) Even when I see wireless networks, i cannot connect to any of them.
I tried various things for a whole day trying to fix it and i doubt if i screwed up some thing that was running good.
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Nov 21, 2010
So I just loaded ubuntu 10.10....and it works great...except for my wirelessi've got a broadcom b43 ...i went into system, administration, download additional drivers and downloaded/authenticated a b43 driver, but my machine (hp dv4405) does not recognize any wireless signals. The wireless light on my computer doesnt turn on (there's a button to turn it on and off) anyways...it's annoying. I guess broadcom recently released some open source drivers, but I'm having trouble sorting through all the info
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Apr 4, 2011
just switched from Windows Vista to Ubuntu 10.10 on my Toshiba laptop and I'm loving it, except for some wireless connection problems. About 70% of the time, my computer is unable to find any wireless signals whatsoever, despite being right next to the router. When it does find the signal it connects fine and runs great, but most of the time it doesn't show any signals at all. I can't find any pattern to when it does or doesn't find the signal. My result for the "sudo lshw -C network"
[code]...
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Nov 19, 2009
I've got the b43 driver and firmware installed, and the system comes up fine, but the max throughput on the wlan0 is about 100Kb/s. My laptop and iwl do about 2.5Mbps from the same location in the house. The signal is plenty strong:
wlan0
IEEE 802.11bg ESSID:"sar2"
Mode: Managed Frequency:2.422 GHz Access Point: 00:23:69:22:5C:00
Bit Rate=36 Mb/s Tx-Power=20 dBm
Retry min limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=61/70 Signal level=-49 dBm Noise level=-57 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
Is this expected from the b43 driver and a bcm4318? I was hoping for much better throughput. Also, I tried the broadcom-wl driver, but it doesn't seem to recognize the card. It looks like it's not supported from their site, only the 4311,12,21,22 were listed, although I see posts where other people claim they are using it with a 4318?
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Jan 9, 2010
I've got a Zotac MAG HD-ND01 with XBMC live installed. This is built on Karmic Koala and runs very nicely through the wired NIC.
I configure the box using a cable. I'm using WPA2-PSK and it is clearly authenticating OK.. It gets an IP address.. the AP shows a connection to the box. My XP laptop connects to the access point OK.. just can't connect to the box via the wireless, and it can't see the network using wireless.
I have followed a number of threads on connecting Atheros 9XXX wireless [URL] but no joy.
Also, can Ubuntu connect to the AP at any speed greater than 54MB? My windows PC connects at 144MB+ . Will ndiswrappers connect at those sorts of speeds?
lspci -nn
04:00.0 Network controller [0280]: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) [168c:002b] (rev 01)
iwconfig
lo no wireless extensions.
[Code]....
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Feb 1, 2011
My wireless connection always worked. When I log in, I already have internet access.I went on holiday and connected to several other networks.Now the laptop will not connect anymore. Sometimes after 5-10 minutes.When I forse to connect ("Connect to hidden wireless network), the laptop connects after several seconds. But not automatically.My wireless modem uses WPA2, MAC filtering and has a hidden access point.I use Ubuntu 10.4 on a HP Probook laptop. In "Network connections", under "Wireless", the "Connect Automaticly" and "Available to all users" are selected. When connected, the signal strenght is very good.
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Feb 22, 2010
I have a desktop hooked up to a router and plugged into my TV. I like to run Totem and have videos running full screen on my TV. I would like to control that Totem using my laptop (connected to the same router over wifi). How would I go about doing that? I connected to my desktop using SSH and tried to send signals to Totem, but nothing worked. I tried using VNC, and that was ineffective as well.
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Mar 2, 2010
Got an Edimax 7717un USB dongle for my Acer aspire 6930 (built-in WiFi is broken). It finds access point OK, but fails to setup with DHCP. If I put in manual IP config, I can ping OK, but I cannot browse web (or even my router's setup page). I get same behaviour on a home brew desktop.
With manual IP config, ping to my router works fine (and very fast, as does ping to 2 or 3 internet web sites. I can traceroute to internet web sites OK as well. With web browsing, if I wait a few minutes some bits of the page may arrive. With connection set to DHCP, Wicd shows WiFi connecting OK, but DHCP setup times out.
[Code]...
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May 19, 2010
I have my internet connection via a wireless USB adapter and that works fine. Recently I connected my pc (Ubuntu 9.10) through a wired switch to my modified xbox so I can watch my videos in my office. I can share my content with my xbox (except for the items on my external USB HD's - I am working on that and will post that question elsewhere) but when I have my PC's wired connection plugged into the switch I can not surf the web or check email. It gets stuck at resolving host and then times out. If I disconnect the pc from the switch it sometimes connects before it times out. Usually it is quicker if I reboot without the wired intranet connection.
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May 24, 2010
I have a Compaq Presario CQ42-195TX laptop with Ubuntu 10.04 (64-bit) installed on it and fully updated. It has a Realtek RTL8191SE wireless chipset which I am having trouble with - its wired connection is working perfectly.After starting up, I am able to see and connect to wireless networks. Once connected, the wireless functions correctly for a very brief period (under 10 seconds) in which I am able to access the Internet and so forth. The connection then stops working - although it doesn't get disconnected. When I say it "stops working", I mean I can no longer access the Internet and trying to ping the router gives me a "Destination Host Unreachable" error. If I disconnect from the network I cannot reconnect, nor can I connect to any other network.- though I can still see the list of available networks.
I thought that maybe this was a 64-bit issue, but I tried the Ubuntu 10.04 32-bit live CD and experienced the same problem.Please note that while this thread is about the RTL8191SE chipset, the RTL819xSE chipsets all use the same driver.Below are the results of various commands while connected to the network but after the connection has stopped functioning correctly:lspci -nn | grep "Realtek"
Code:
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. Device [10ec:8171] (rev 10)
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast
[code]....
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Jun 20, 2010
I recently installed Xubuntu 10.04 on my desktop computer that had a USB wireless adapter DLink DWA-140. I didn't have to install any additional drivers to get it to work. I put in the network SSID and the password and was connected immediately. However, when I try starting firefox it doesn't load any sites. Can anyone help me in approaching this problem. I have a DLink DIR-655 router. If I should gather more information to get this problem solved then please let me know and I will do so.
Edit: Now I am unable to connect to the network. When I click the network icon in the taskbar, my home network is not visible while it is visible under another ubuntu computer I'm running.
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Jul 17, 2010
I bought a laptop today (Compaq Presario cq62) and loaded Ubuntu 10.04 on it. Everything has been running great, but the Wifi has been acting up. It connects to my router for a few seconds to a minute, and then stops all data transfer (although it still shows that I am connected to the internet). My other computers running Mac work fine. I took my laptop to another place with wifi, and it did the same thing.
The data transfer seems to stop when there is a lot going on. Whenever I try downloading new software, it gets to exactly 5% then stops. If I disconnect the wifi, and reconnect it works again for another minute. I may need to be walked through any terminal codes.
On that note, where would be a great place to read up on using Ubuntu (online book?)
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Aug 25, 2010
I installed Ubuntu 10.04 32-bit on an old desktop (1.5ghz Pentium 4, 20GB hard drive, 768MB RAM) a week or two ago, at the same time that I installed Xubuntu 10.04 on an even lower performance IBM tower server. The server functions perfectly and my other (Windows XP) desktop recognized it from the start, as did the Ubuntu desktop. However, I rearranged a few ethernet cables the other day without turning off the desktops and ever since my Ubuntu machine does not recognize my server, even though all of the devices are connected via ethernet cable to a linksys router and it connects to the internet without a problem. I'm a linux newbie - this is my first move away from Windows - and I don't know where to turn. Far more confusing is the fact that, when I boot from a LiveCD, the network is recognized and I can read/manipulate files on my server without a problem. Oh, and I briefly flirted with OpenSUSE KDE (not as noob-friendly as Ubuntu, so I'm back) and encountered the same problem.
Needless to say, booting from the hard drive is preferable to booting from CD every time
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Jun 17, 2011
I've recently installed release 11.04 and am trying to get wireless networking operational. I'm using a netgear wg111t usb wireless adapter. I've installed ndiswrapper and have got the netgear windows drivers installed ok. My problem is when I try to connect wirelessly I get a system crash, think it tends to be called a kernel panic in linux. The network connection is confirmed and about 5-10 seconds later the crash happens. I've updated the linux kernel to 2.6.39-0-generic but thats not helped.
I can connect with a cable but that is somewhat limiting.
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Jun 26, 2011
Sony Vaio X upgraded to 11.04 with 2.6.38-8-generic i686 which improved some features but which introduced a serious WiFi problem: while other WiFi works well, connecting via my Droid hotpsot fails consistently despite reboots of everything and renaming of SSID. Another laptop running 10.04 still works fine with the Droid hotspot. One hint: upon upgrading, there was the warning that the laptop hardware did not support Unity and I always get the classic Gnome display.The Droid hotspot shows up in the list of SSIDs but attempts to connect always fail, even when it is made totally unsecured.
Atheros AR9285 Wireless Network Adapter
Qualcom Sony Gobi 2000 Wireless Modem
ifconfig shows no packets with wlan0 or any connectivity.
iwconfig shows correct SSID and other info.
[code]....
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Jul 3, 2011
I recently installed UBuntu 11.04 and dual booting it with WIndows 7, I really like linux and considering removing W7 and only have Ubuntu But the problem is I can only connect when using an ethernet cable, when it comes to wirelesss, I type my password, yet a ring keep rotating and it never connects. My laptop is HP-G62
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Dec 10, 2010
I have installed OpenVPN to use it as an internet gateway butcan't get it to work.OpenVPN installed without any problem. The client can also connect and ping the server but there is no internet traffic.I think it is because of a wrong gateway address which the client gets but I'm not sure. server IP address is 10.8.0.1 and the client can ping this IP but it's default gateway is always 10.8.0.5 which is not accessible from the client.This is my server.conf:
Code:
dev tun
proto tcp
[code]...
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