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.
Also, this bug has a lot of duplicates, like Bug #535222 which seems to be the
first on posted.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/773154
Title:
Atheros AR9285 extremely slow & unstable
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