Wireless (WPA) connection is not stable

[Cima]

Binary package hint: network-manager

Connection to a WPA wireless is not stable in Ubuntu 9.04. Every now and then connection is lost, and the connection startup procedure has to be run again. This problem was not present on the same PC with Ubuntu 8.10. Signal is strong (>60%). I could not make any test with other wireless connections or on another machine. My driver is: ath5k_pci.

[Pedro Villavicencio (pedro)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. The issue that you reported is one that should be reproducible with the live environment of the Desktop CD of the development release the Karmic Koala. It would help us greatly if you could test with it so we can work on getting it fixed in the next release of Ubuntu. You can find out more about the development release at http://www.ubuntu.com/testing/ . Thanks again and we appreciate your help.

[JK (albgulu)]

--------
I had the same problem with Ubuntu 9.04 and Atheros WiFi Card:

Tried Knoppix 6.2 (Kernel 2.6.30) with the same notebook: It worked !!!
--> Solution: get kernel linux-2.6.30.5 Recompile on the Ubuntu 9.04 and it works !!
For some reason the ath5k driver (or other components ) do not have the bug.
All the pings are getting now responds (before i had 10% packet loss)

[Cima (andrea-cimatoribus)]

I gave a try to 9.10, but unfortunately it's a bit crashy on my machine at present. Actually, I can't connect at all, but that may be as well due to the general instability of the system, I think. Almost everything crashes al the time...
I will give a try again to the next alpha/beta.

[Lukáš (lu-dolezal)]

Hi,
I'm registering similar bug. I have 9.10 on laptop with Intel 3945ABG wifi card. When I connect to WEP or WPA network, after a short while connection losts. Connection to not secured network is stable. I also tried wicd manager and with it I did not recognize any problem with WPA or WEP. My opinion is that connection losts due to network-manager's AP scan during connection (look at log).

Sorry if I didn't attach needed logs etc.

Thanks.

[HumpieDumpie (humphreyheynen)]

I also have a 9.10 clean install with laptop (Toshiba Satellite P100-442) and Intel 3945ABG wifi card with the same problem that WPA2 connection is not stable. It disconnects regularly and reconnects, probably once every 30 seconds. Before I did a clean install I also run 9.10 without problems, after the clean install I have this problem. I tried also WICD , and although it is more stable, it sometimes unable to get IP address for a whole day. I'm glad to include debug information if somebody tell me what to do. I'm a starter in Linux.

Thanks for any help.

[HumpieDumpie (humphreyheynen)]

Hi I have now tried Lucid Alpha 2 and the problem disappears and the connection is stable for 1.5 days.
I am looking forward to the new release.

Thanks,

[vRussell (russell-lrg)]

I have the same problem. I am using 9.10 and connect to the WPA in campus. It is disconnected after every 10 minutes.
The WiFi adapter is AR928X.

[jcglt (jcjglt)]

I face a similar problem with Ubuntu 09.10 then 10.04LTS then 10.04-1LTS.
I'm running an Atheros 5001 chip with ath5k driver.
I changed "network-manager" to "wicd" with some improvement, reverted to "network-manager" and added "wifi radar" then removed the last. Things deteriorated with the last kernel update a few days ago with 2.6.32-26 and I reverted to 2.6.32-25, which was far better on my computer.
I eventually found the folowing bug thread :
                 https://bugs.launchpad.net/ubuntu/lucid/+source/network-manager/+bug/373680
According to the procedure proposed there I replaced my "network-manager 0.8-0ubuntu3" packet by "0.8-0ubuntu3+volanin1"
(see Question #135241) and my wifi connexion is very steady now, not perfect (ping test will show a loss of nearly 10%) but much better. The remaining lack of performance is shown by the ping test but while surfing on the net I don't face anymore visible disconnections.

[Launchpad Janitor (janitor)]

[Expired for network-manager (Ubuntu) because there has been no activity for 60 days.]