lkml.org 
[lkml]   [2013]   [Jun]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: RTL8192CU on ARM not working
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



\
 
 \ /
  Last update: 2013-06-27 17:21    [W:0.231 / U:0.136 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site