Comment 52 for bug 773154
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| Bernardofpc (bernardofpc) wrote Re: 168c:002b Atheros AR9285 extremely slow & unstable | #52 |
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0e1f616
(Get the code!)
I was hit by the ath9k issue after an upgrade.
I found this bug report after another one which was a duplicate, and I'm not really sure if it's really the same issue, but nonetheless here's my case:
- wireless network had a very strange "spiky" behaviour: sometimes it would have a burst of 500 k bytes (in one second, using dstat tool), then fall to some ridiculous 8B/s (yes, bytes per second) in a 5 second period. During a download from kernel.org. I tested it on windows, sometimes the rates would fluctuate and drop to some 200-ish kB/s, but to just resume back to 400 then sometimes 600.
- I first thought it could be a DNS issue (it seems *very* strange that 127.0.0.1 be a dns server for a laptop) but it was mostly alright
- more searches indicated the nohwcrypt=1 option in loading the ath9k module, and that gave me consistent and 500kB/s rates for the same kernel.org download. Of course I have (yet) no idea of the security / performance implications of that magic option
It would be nice to have an official "how to eeePc wifi ath9k", because it's probably easy but still it's better to see it in a Canonical place rather than on an obscure blog only referenced (but no address given) in bugs here.