Comment 40 for bug 461419

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Christiansen (happylinux) wrote : Re: [Karmic] Atheros AR5211 - ath5k driver connection and performance issues

The apport-collect above was collected using the Karmic RC Live CD and default ath5k module from the linux-image. Connectionspeed was checked several times using the ISPs reliable internet speed test, and the result was less than 256Kbit/ps downspeed and very unstable - link was checked to more than 2 Mbit/ps with an other Kubuntu 8.04 with the default ath_pci module loaded, this was done in between the Karmic RC tests - The boxes was connected to the AP one at a time, and no other access for other client boxes was allowed.

The LBM was tested on an new installed Karmic RC fra the same live CD and on the same box, and was updatet with all updates including the the LBM. The test results was even worse than with the default ath5k module.

A test on an enterprise Cisco WiFi network was done too with the same box, and the connection speed was even less than with the default module and wireless stack.
Compiling an ath-pci module from source (Ver. 10.0.5.6), and loading the module on the other hand showed the expected connection speed on the enterprise network, which is approximately 18.000 Kbit/ps (18 Mbps effective on a 54G network).

I will try to go on to step 3 later this night, and report back if I succeed.