[Bug 564376] Re: Lucid - iwl3945 drops connection on youtube but not with mainline

[Stejarel Veres]

Hello all,

I've done some more testing on this bug and I came to a surprising
conclusion - at least for me.

I've been thinking about the weird behavior this bug exhibited.
Initially I thought that it was about high traffic on the wireless
interface. Then, I realized that this was not really the case - as I did
some heavy wgets and nothing went wrong with those. This bug seems to
only show up when high video activity is present as well (this explains
why it manifests with streaming video).

The more I'm thinking about it, the more I lean towards some sort of IRQ
conflict between iwl3945 and radeon (note that the original poster also
had a Mobility Radeon video adapter). Anyway, thinking about how KMS
created all sorts of issues for lucid, I went ahead and disabled it
(radeon.modeset=0) with 2.6.32-21-generic (the current lucid kernel).

Lo and behold, the wireless adapter does not lose connection anymore
(I've been abusing it for the past hour now).

This could also explain why this bug doesn't affect so many people - if
it requires that *both* iwl3945 *and* radeon be present, the subset of
users that have this particular hardware combination should be somewhat
smaller.

I hope this helps.

Stejarel

-- 
Lucid - iwl3945 drops connection on youtube but not with mainline
https://bugs.launchpad.net/bugs/564376
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