5G settings are 100% stock the way the firmware ships, with the exception of MAC address filtering turned on, and obviously turning on encryption. None of the variables previously tested in this thread have been changed from the defaults that are set upon loading. I have multiple devices...
I have been running on 382.1 for 11+ days now and I can safely state that it has resolved the issue where 5GHz stops broadcasting as described in the following thread:
https://www.snbforums.com/threads/5ghz-stops-broadcasting-on-merlin-380-68_2-and-above-ac3100.41485/
While I know this would be a huge PITA, it would be very interesting to see what happens if you flashed to official Asus RT-AC3100_3.0.0.4_382_15852 and left the setting defaulted to 20/40/80, as well as the default settings for the rest of the ones tested in this thread. For me, this resolved...
How would a power supply issue explain previous Merlin builds or official Asus firmware working for months with no issues, as well as reproducible conditions on Merlin builds identified as having this issue earlier in this thread? What test and control conditions did you have in place and what...
Up and running now for 51+ hours with no issue. Since this uptime is twice as long as any previous time frame before 5GHz stopped broadcasting, I think I'm going to call it and state that the fix appears to be changing 20/40/80 to 40MHz. This matches the conclusion reached by @ScottW , @JMB64...
Check this thread - good chance it could be related:
https://www.snbforums.com/threads/5ghz-stops-broadcasting-on-merlin-380-68_2-and-above-ac3100.41485/
You've got some variables in play that are relevant to the issue at hand - forcing a Control Channel instead of Auto and completely disabling 2.4GHz (untested on this thread). If you enabled 2.4GHz and changed Control Channel back to the default setting of Auto, it would be interesting to see...
Been up and running with no issues for just under 24 hours now. While it is still too early to "call it", lets assume that the singular setting of changing from 20/40/80 to 40MHz is the "fix" for the issue where a router stops broadcasting the 5GHz signal on recent Merlin builds. If that is...
I did for many years, until it became apparent that the downsides of hiding the SSID outweigh the advantages from a security perspective. For the purposes of this issue, SSID is not hidden and hasn't been.