I'm still experiencing trouble with the 5Ghz, maybe even WRT in general, up to the point I'm considering going back to the original Zyzel AA release. One last effort to see if this helps: I'm currently running an alternative driver firmware for the QCA988X get it from github i'm running the last of the 4 series 10.2.4.48 (not sure if running the 5 series is possible, something for later) rename the file to firmware-4.bin and replace the one that's already there in /lib/firmware/ath10k/QCA988X/hw2.0 There's probably a way to force WRT to reload the driver, but hey I rebooted. First look seems fine, let's see if it's more stable. -- update -- leaving channel selection on 'auto' didn't work - 5G did not come up. (no mesgs as to why) manually selecting a channel did seem to work, at least when also selecting a 20Mhz bandwidth, 40Mhz seemed to work but I had some devices not connecting properly. -- update2 -- 5G was mostly s...
Turns out this "fix" isn't really proper. It let's the driver load but with garbage calibration data. A better way is to
ReplyDeleterm /etc/hotplug.d/firmware/11-ath10k-caldata
rm /lib/firmware/ath10k/(pre-)cal-pci-0000:01:00.0.bin
and reboot.
the hotplug script needs to be removed otherwise it'll recreate the cal files and we are back where we started. This should get fixed in the next LEDE/WRT release.