On 06/11/12 15:54, Johannes Berg wrote:
The problem here is that some devices (notably iwlwifi) will not allow (by firmware) to connect to such an AP as HT40- if that is not allowed. So I prevented it generally, but we can make it device dependent. I don't like it much, but I suppose we can do it. Try this patch: http://p.sipsolutions.net/0129f39c7d882289.txt It will still prohibit this configuration when the driver said it's not allowed, but will allow it when there were other reasons to not allow it.
Just to report, with the patch under discussion re-applied (3a40414f826a8f1096d9b94c4a53ef91b25ba28d), plus the patch at your link above, my throughput is back to normal again.
So I guess the above patch resolves the issue (on the face of it) for me, but whether it is a suitable solution I've no idea.
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