Quoting Jussi Kivilinna <jussi.kivilinna@xxxxxx>:
Hello,
I've made some more testing, and noticed that device does not go
completely silent...
I can now reproduce this hang without large transfers with 'ifconfig
wlan0 up; iw dev wlan0 scan & sleep 0.02; ifconfig wlan0 down'.
The large tranfers caused connection to fail sometimes, leading
wpa_supplicant to issue scan that is aborted. Manually aborting scan
causes device/driver go into this partial silence state too (with
beacons/probe requests received).
So maybe driver does not do all the required clean-ups for aborted scans?
-Jussi
After device stops working in managed mode, I added monitor
interface and it receives beacons and other broadcast packets.
However if I turn on any monitor interface for device, managed
interface is silent and monitor interface only receives probe
requests.
Before this condition appears, there is "wlan0: deauthenticated from
xx:xx:xx:xx:xx:xx (Reason: 2)" with reconnect to AP:
<snip>
After which silence strikes. So maybe that signal average bug is not
related to this connection issue, but driver/device goes in to some
mixed up state because of disconnect/reconnect?
-Jussi
Quoting Larry Finger <Larry.Finger@xxxxxxxxxxxx>:
Thanks for the log and the signal average data. All of the BUGs
come from a single debug statement in the source. I will delete
that trace call.
Realtek has apparently stopped development on the mac80211-based
driver. The latest version is dated 2011.02.10. The latest driver
with Realtek's softmac stack is 2012.06.22. As the two drivers are
totally different, porting the fixes from one to the other are
quite difficult.
My plan is to try to improve rtl8192cu; however, if that does not
work, I will pull it in favor of the version with Realtek's stack.
It will, of course, need to be placed in staging. The downside is
that a number of distros do not install drivers from staging, and
all the mac80211 features will be lost. That is the worst case
outcome.
Larry
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