made some benchmarks:
with TP-LINK WR941N router, situated behind 2 walls and 20 meters away from
notebook, I have:
#iwconfig wlan0 txpower auto
# iwconfig wlan0 |egrep Link\|Tx-Power
Bit Rate=0 kb/s Tx-Power=15 dBm
Link Quality=62/70 Signal level=-48 dBm Noise level=-84 dBm
Ubuntu sets Tx power to maximus, heating the network card.
speedtest.net benchmark shows about 80Mbit/s
Let's make Tx Power lower, until we see performance degradation.. I
lowered Tx down to 5 without any performance degradation. And the card
became cooler :)
It will even work at Tx Power set to 1
#iwconfig wlan0 txpower 1
# iwconfig wlan0 |egrep Link\|Tx-Power
Bit Rate=0 kb/s Tx-Power=1 dBm
Link Quality=57/70 Signal level=-53 dBm Noise level=-83 dBm
But benchmark shows only 20Mbit/s
So, can I make Ubuntu to automatically control Tx power of Intel Wlan
cards?
--
3945ABG wifi card make my computer very hot and freeze the system
https://bugs.launchpad.net/bugs/292584
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