This problem still persists in Ubuntu 12.04. It is probably related to the Linux kernel because it happens in a lot of other major distros.
I found a partial solution to my problem. I deactivated the B/G/N wireless mode of my router and enabled G mode only. Might work with N mode only, but I can't afford to do that because I have a device that relies on G mode. The ath9k driver is broken and some people claim that disabling hardware encryption (how safe is that?) and power management of the wireless device will fix the problem. As I have noticed, these changes might improve those that have an absolute poor performance or a not very fast Internet connection so they won't notice the lack of higher speeds. The problem must happen differently according to router settings so disabling the driver options might seem to be a fix to some. In my opinion, the driver is broken, probably relying on undocumented reverse engineering, thus they are presenting problems when working with different routers and wireless modes. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/535222 Title: Atheros AR9285 wireless poor performance Status in “network-manager” package in Ubuntu: Confirmed Bug description: Binary package hint: network-manager The chip is recognized correctly and connects to the wireless network (802.11g with WPA 2), but connection is very slow even with the computer next to the router ProblemType: Bug Architecture: amd64 CRDA: Error: [Errno 2] Nessun file o directory CheckboxSubmission: 04e5b427a2a8b9852cdda7df36ef2f13 CheckboxSystem: b633b4f40868d491c2ae5b50030ce6f3 Date: Tue Mar 9 18:50:38 2010 DistroRelease: Ubuntu 10.04 IfupdownConfig: auto lo iface lo inet loopback InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027) IpRoute: 192.168.0.0/24 dev wlan0 proto kernel scope link src 192.168.0.5 metric 2 169.254.0.0/16 dev wlan0 scope link metric 1000 default via 192.168.0.1 dev wlan0 proto static Keyfiles: Error: [Errno 2] Nessun file o directory NonfreeKernelModules: nvidia Package: network-manager 0.8-0ubuntu2 ProcEnviron: LANG=it_IT.utf8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.32-16.24-generic SourcePackage: network-manager Uname: Linux 2.6.32-16-generic x86_64 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/535222/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
