Messages in this thread | | | Date | Thu, 27 Jun 2013 09:45:32 -0500 | From | Larry Finger <> | Subject | Re: RTL8192CU on ARM not working |
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On 06/27/2013 03:12 AM, Maxime Ripard wrote: > Hi everyone, > > I'm currently trying to use a RTL8192CU on an ARM (Freescale imx28, > armv5) platform, using 3.10-rc3. > > Trouble is, while the chip is correctly detected and you can use iw on it > without any problem it seems, once you start an association to an access > point, the association goes on, seems to associate, displaying a WARN() > message [1] and then, after what looks like a random amount of time (could > be right away, could be after a few minutes), deassociate [2]. > > During the time where it's associated, we never seem to transmit any > packets, while iw reports packets being sent, I guess we can assume that > they are actually never transmitted as well [3]. > > What seems odd to me as well is that the signal power reported for the access > point is excessively high when using iw scan (10 dbm), and once connected, the > signal strength is -64dbm, which makes quite a huge difference.
That warning is under discussion. See the thread entitled "rtl8192cu: slow path warning" in the linux-wireless ML. I will add you to the Cc list on those messages.
You should switch to kernel 3.10-rc7. There are a lot of changes to rtl8192cu in that version that are not in -rc3. Those updates mostly affect WPA and WEP encryption.
I never take signal power values seriously. Just observe the comments scattered throughout the code regarding them.
Larry
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