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R7800 No Wifi signal
This is a last ditch effort. I am trying to connect my device to the internet. But for whatever reason. I do not see a display for 2.4Ghz along with 5Ghz. The wifi radio signal that is on the far righ...
I just fixed the issue by installing OpenWRT.
I have had the exact same issue.
I had no wifi signal even the wifi button is on (solid white) and both 2.4 and 5 GHz signal enabled on GUI but both wifi led were off on the device.
I have tried FW downgraded/re-upgraded, installed latest Voxel FW and reset the device numerous times but no luck.
Since R7800 uses QCA9984 chipset for wifi radio, I tried to search to find out some info and there was FW for the chipset at OpenWrt site.
https://openwrt.org/packages/pkgdata/ath10k-firmware-qca9984-ct-htt
It seemed like the QCA9984 FW was built in OpenWrt FW OpenWrt-19.07.0, so I installed it then both 2.4 and 5 GHz led came back on and I could access those.
Then since I was not familiar with OpenWrt GUI, I rollbacked to Netgear FW V1.0.2.80.
Hope this helps.