Samsung Notebook model NP-N140 running Linux Mint 18.3
This elderly and battered notebook belongs to an even older lady of my acquaintance. She's a lovely old lady and considerably less battered than her laptop. However she comes to a club we run for older computer users to improve their ability to use their equipment.
Her problem is that when she comes to the club, which meets in a local bar, the wifi on the laptop works perfectly but she was saying it wasn't working at home. So I popped round to have a look. Sitting at the table in her living room I could not get on-line although there appared to be plenty of signal and her Android tablet was connecting with no problem. This was at a distance of about 10 feet (3m) from her router, a late model BT router placed in the same room and, yes, the wifi was looking at her router. So I took it home with me.
It connects perfectly in my kitchen and in my downstairs 'office'. I took it outside and it was still connecting at a distance of 30+ yards and there is nothing special about my router.
Could it be, for whatever reason, a signal null zone at her table ? Or is there any way I could measure signal strength on my own laptop ? I really want to get to the bottom of this, as I said, she's a lovely old lady !