The result is the following:
* The wireless-LED gets turned off when booting, and stays turned on on wakeup, as before.
* After boot wireless does not work after modprobe.
* After wakeup wireless works after modprobe (rmmod is not necessary because the module was not loaded).
Thus we can conclude:
* The wireless led is not turned off by loading the ath9k module, the fault must be somewhere else.
* When loading the wireless module on wakeup it just works; when it was not blacklisted and is already loaded, it is somehow broken. This might be caused by interference with something else on wakeup.
I have blacklisted the ath9k module for testing.
The result is the following:
* The wireless-LED gets turned off when booting, and stays turned on on wakeup, as before.
* After boot wireless does not work after modprobe.
* After wakeup wireless works after modprobe (rmmod is not necessary because the module was not loaded).
Thus we can conclude:
* The wireless led is not turned off by loading the ath9k module, the fault must be somewhere else.
* When loading the wireless module on wakeup it just works; when it was not blacklisted and is already loaded, it is somehow broken. This might be caused by interference with something else on wakeup.