restart wlan9

[baltika_no_9]

I agree with PaddyB and I always use a separate USB dongle so each interface has just one function however that doesn't immediately help you Tobias.

It is puzzling that although you are passing regular traffic it still stops working. I've set up my system here to mimic yours and I don't lose wlan9 but maybe I haven't left it running long enough yet.

A post above from holgerw suggests that maybe it's a power management issue but that's hard  to understand as wlan0 remains active and it is the same physical device. However you can check is power management is enabled or not, I get the following:

Code:

pi@dolly:/etc $ iw wlan9 get power_save
Power save: on
pi@dolly:/etc $ sudo iw wlan9 set power_save off
pi@dolly:/etc $ iw wlan9 get power_save
Power save: off
pi@dolly:/etc $

I am very doubtful whether this is going to help because wlan0 also shows that power saving is enabled yet that doesn't disappear. Is it worth a try?

Note that this is not persistent, after a reboot it will revert to power saving enabled.

Are there any relevant messages in dmesg?

Code:

dmesg | grep wlan9

Maybe the real answer is that using one interface for both client and AP is, at the moment, too flakey!

Good luck
Chris