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After upgrading to 12.04 LTS, I am seeing TX errors popping up in ifconfig. I am using a Broadcom4313 wlan controller.

The command lsmod | grep wl gives:

wl 2646601 0
lib80211 14040 2 lib80211_crypt_tkip,wl

The wlan is connected but the speed is less than 10 KBps. The nm-tool reports:

Capabilities:
Speed:   1Mb/s

But my net connection is 15Mbps !!!

share|improve this question
    
you're aware Mbps != MBps right? 15 Mbps (Mega Bits) is about 1.87500 MBps (Mega Bytes). As for the Kilobytes issue, wifi'll always be slower than direct-wire connection. You may want to also know certain sites have slow upload speeds so you get slow download there. What "TX" errors are you referring to? –  Thomas W. Nov 22 '12 at 17:15
    
How far are you from the access point? Are there any obstructions, like walls, between your computer and it? –  taneli Nov 27 '12 at 6:26

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