Debian Configuration :: Cannot Connect To Certain WLAN With Network-manager

Jul 23, 2015

Since a recent update on Stretch, I have been unable to use the network-manager to connect to my home wireless network on my laptop. It was working fine before. I did not change any settings on the WLAN router. I can still connect to other wireless networks at work and university, just not this particular one at home. All other non-Debian devices in my household are still able to connect just fine.While figuring this out, I have tried connecting manualy with ifup but I don't really know how that works. Right now there is only the loopback entry in /etc/network/interfaces.

Below is the output of syslog, when gnomes network-manager is trying to connect, but fails.
Code: Select allJul 19 20:01:57 debian NetworkManager[6705]: <info>  (wlan0): Activation: starting connection 'Affenbande'
Jul 19 20:01:57 debian NetworkManager[6705]: <info>  (wlan0): Activation: Stage 1 of 5 (Device Prepare) scheduled...
Jul 19 20:01:57 debian NetworkManager[6705]: <info>  (wlan0): Activation: Stage 1 of 5 (Device Prepare) started...

[code]...

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Code: Select allNetwork Interface
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[code]...

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[Code]...

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