On Nov 29, 2011, at 10:36 PM, Rafał Miłecki wrote: > W dniu 29 listopada 2011 21:08 użytkownik Rafał Miłecki > <zaj...@gmail.com> napisał: >> Hey Francesco, >> >> W dniu 29 listopada 2011 20:28 użytkownik >> <francesco.gring...@ing.unibs.it> napisał: >>> Hi Rafal, >>> >>> I bought some 43224 cards to begin playing with the firmware. Unfortunately >>> I have problems with the throughput that is really low. Kernel is the >>> latest from wireless git and firmware comes from broadcom-wl-5.100.138. I >>> see that the transmitted power is low, I monitored it with a spectrum >>> analyzer and it confirmed. A lot of packets are lost given the low power >>> and minstrel always select 1Mb/s. When receiving with the 43224 in monitor >>> mode, I see that it receives only a few of the frames that are received by >>> a close 4318-based box: the reported power levels are low too. Please find >>> attached all info about kernel/firmware and devices below. >>> >>> I tried all the four cards I have and they behave the same: find a photo of >>> one of them here >>> >>> http://www.ing.unibs.it/gringoli/foto.JPG >>> >>> I tried the cards on a MacBook White, on an Intel Atom based motherboard, >>> Intel Pentium, and AMD Sempron, and I always got very low throughput. The >>> same cards, with the same antennas (everything untouched) but with brcmsmac >>> work well and the spectrum analyzer reports "normal" emitted power levels. >> >> I'm fighting with my BCM43224 for last 2 days, I reproduced the >> problem with poor throughput. I already have some patches but nothing >> improving situation so far. If I discover anything, I promise to share >> :) > > After trying some "next" patch while my development, my card started > working. I've managed to associate and authenticate. I hoped I've > implemented some lacking part, and found the cure. > > Then I reverted all my patches and... card is still working :( Of > course I'm doing cold boot for every test. > > I'll give it a rest and will try in next days again. Larry,
I found your message on linux-wireless (end of July) reporting that the throughput was about 10Mb/s with bcma. You mention kernel "master-2011-07-26-150-g4ea94a9". I gave it a try (it is a 3.0.0 if I'm not wrong) but I'm still having very low throughput. Rafal: so you observe good/bad throughputs at random? Sometimes after cold boot it works fine, other times bad? Did you modprobe using some options? Many thanks, -Francesco > > -- > Rafał _______________________________________________ b43-dev mailing list b43-dev@lists.infradead.org http://lists.infradead.org/mailman/listinfo/b43-dev
