I have the same "ERROR: No TX rate available." issue on my Intel 5300 on Ubuntu
Karmic.
I am using a NETGEAR AP.
I'd like to add that I also have serious speed problems:
In 802.11g the speed is sometimes limited to ~100kb/s even when I am right next
to the AP.
ifup and ifdown on the interface helps.
In 802.11n mode the speed is also sometimes limited to absurdly low throughput
of ~750kb/s, again down/up-ing helps.
cat wpa_supplicant.conf
ap_scan=1
network={
ssid="private"
scan_ssid=1
proto=RSN
pairwise=CCMP
group=TKIP
psk="removed"
}
--
[karmic] Intel WiFi Link 5300 sometimes not working on 5 GHz
https://bugs.launchpad.net/bugs/420678
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