On 02/26/2015 05:47 AM, Freek de Kruijf wrote:
Op donderdag 26 februari 2015 10:44:17 schreef Andreas Färber:
Am 26.02.2015 um 10:12 schrieb Freek de Kruijf:
Op woensdag 25 februari 2015 23:33:31 schreef Andreas Färber:
Am 25.02.2015 um 22:11 schrieb Freek de Kruijf:
I have a strange problem with Wi-Fi connections to two somewhat different Access Points. Both use the same configuration in "YaST network", apart from SSID and IP address. Still the connection does succeed with one AP, but to the other AP it always fails.
In my experience the most frequent cause of inexplicable AP connection problems is a misconfigured RTC. If you're using Ethernet too, make sure NTP is configured.
What do you mean by RTC?
Real time clock, i.e. `date`.
And NTP means Network Tine Protocol?
Yes. Can be configured through the yast time(zone) settings.
Andreas
I have a test set up with the RPi connected via the UTP port and two different Wi-Fi USB dongles in the two USB ports of the RPi. The clock is synchronized using NTP via the wired connection. So there is nothing wrong with the RTC and NTP. The two Wi-Fi interfaces are configured the same way apart from the SSID and IP address. I exchanged the SSIDs of these interfaces and both connect to one AP and not to the other AP.
I see a number of red herrings in this thread. The first is that time has anything to do with it. I also doubt that this has anything to do with RPi or ARM. The two AP's are *not* configured the same. In your first E-mail, you said that one uses TKIP and the other uses CCMP. That usually means WPA for the TKIP case, and WPA2 for CCMP or AES. Please supply the output of 'ps ax | grep wpa_supplicant'. Also, please supply the output of 'sudo /usr/sbin/iwlist scan' or 'sudo iw wlan0 scan'. If the device has a name other than wlan0, adjust the second command accordingly. It would be helpful if you identified the wireless device and driver. I have no experience with wicked, but I suspect it is the problem. To my knowledge, all wifi drivers handle both WPA and WPA2 encryption correctly. Larry -- To unsubscribe, e-mail: opensuse-arm+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-arm+owner@opensuse.org