[lubuntu] Lubuntu 16.04 on Acer Aspire One AOA 110-Ap netbook - atheros wifi fails on cold boot

The Atheros AR2425 wifi on this old netbook has always been very reliable with all previous versions of lubuntu, but after upgrading to lubuntu 16.04, it has a strange problem. On tuing on the netbook from cold, the wifi never works - it is unable to see any network. Asking it to ping my router just gets a response of 'Network is unreachable'.

Rebooting (usually just once, but 2 or 3 times on rare occasions) gets the wifi working, and once this is acheived it is rock solid - no wifi problems until the next time it is tued on from cold.

I briefly considered whether this might be an intermittent problem indicative of an impending hardware failure - but I think not - its behaviour is very consistent, and a friend with the exact same model of netbook is experiencing exactly the same problem.

I downloaded and ran the wireless-info script - once after a reboot with the wifi working, and the following day after a cold boot, with the wifi not yet working. I then ran diff --suppress-common-lines on the two resultant wireless-info.txt files. The diff gave a large amount of output which I have looked through, but I'm afraid I don't know enough to recognise where the problem lies, and I would be grateful for advice on what it reveals.

I am uploading three files with this message - all compressed due to the file size limit of the forum: the output of the wireless-info script after a cold boot, and after a warm boot, and the output of ruing diff against these two output files.

Thanks in anticipation
Alan