My wireless connection crawls for 20sec every 2min. NetworkManager was
scanning my wireless network every 2min (iwevent says so). The problem
is that the scan lasts 20sec, and during that 20sec, I get the following
dmesg messages:
ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 2 failed to flush
and my connection crawls. The card is Linksys WMP600N (rt2800pci).
I tried different kernels, different driver settings, different
NetworkManager configurations, etc. Since it's the only wireless card I
have, I couldn't try different card and didn't feel like buying another.
Finally, an accidental click led me to a solution:
To prevent NetworkManager from scanning, set BSSID to the MAC
address of access point.
--
William
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