Comment 54 for bug 495981

I switched to channel 13. Less problems but if the Internet connection is (shorter) blocked I get:

Or:
sudo iwlist wlan0 scan
wlan0 Interface doesn't support scanning : Device or resource busy

Or:
wlan0 Scan completed :
          Cell 01 - Address: B0:B2:DC:10:33:6C
                    Channel:13
                    Frequency:2.472 GHz (Channel 13)
                    Quality=70/70 Signal level=10 dBm
                    Encryption key:on
                    ESSID:"Zadel"

Cell 06 - Address: 00:0C:F6:42:DD:9A
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=70/70 Signal level=10 dBm
                    Encryption key:off
                    ESSID:"Sitecom"

The Quality is the same and that should not be possible. So, something very low level is going on. It is beyond my capabilities to debug this.

The problem is driver bound. That is, some drivers never have this problem. At my place an Intel N2230 driver. Other drivers have a lot of problems. That my home Rtl8192se drivers.

So, it is still not clear what causes this bug.