Comment 6 for bug 462466

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Giovanni Panozzo (giox069) wrote : Re: Problem with Broadcom BCM4322 STA-driver in Ubuntu 8.10 Karmic

I have the same problem on Dell Latitude E6400 on Ubuntu 9.10 karmic x64: only channels 1-11 of 2.4GHz band are available and I cannot connect to AP on channel 12/13 (which is legally permitted in Europe). The WiFi adapter is a Dell Wireless 1510, which is a BCM4322. I'm using the STA proprietary driver which is downloaded automatically by ubuntu.
The "iwlist channel" command reports that no channel 12 and 13 are available.
After downloading, compiling and installing the STA driver 15.4.22.2.6.28 2010/02/06 from http://www.broadcom.com/support/802.11/linux_sta.php (wl.ko), the channel 12 and 13 are now available.
The module wk.ko seems to work. Unfortunately, like the ubuntu stock module, performances are very bad with respect to the Windows 7 driver :(
In Ubuntu, with both old and new wl.ko) I can ping my lan default gw in no less than 6ms, with a lot of jitter, while in windows 7 i can ping in 1ms.
The maximum transfer rate for Ubuntu is 1.2-1.3MB/sec, wile in windows 7 is 2.5MB/sec :(