I'm using a 2504 WLC with 1041 LWAP. All works fine until everything is switched off for some hours. On power up the APs eventually end up with a solid green light but when I'm on the monitor screen on the 2504 it doesn't show any APs connected to it.
If I default and start again, the APs will come up. If I power off for only a few minutes they will come back up. It's when everything is switched off for some hours that the APs won't come back up. I've upgraded the s/w to 126.96.36.199. The configuration seems to remain intact on the controller even after a long power off.