Hello,
As the main "Wifi issue" post is now locked, I am starting a new thread (as advised by the moderator)
Background
_ I have a Rpi3, but I can't get Wifi to work with my router.
_ Interestingly, I can get Wifi to work with other routers.
My investigation so far
Action 1
_ As I had a SD card with the version of the OS that could not manage Wifi, I passed by a friend's flat to use the SD card reader of his computer.
_ I got my SD card formatted, an up-to-date version of the OS installed.
_ At that stage, I was able to start my RPi, and to connect very easily to my friend's router.
_ My first fear (hardware issue) was therefore ruled out - once provided with the correct version of the OS, the RPi is working.
Action 2
_ Once back home, nothing. I could not connect to my router.
_ Nonetheless, as I am a BT customer, I have access to BT Wifi as well from my flat... and that was working fine.
_ My second fear (hardware damage on the way back home) could therefore be ruled out - RPi is still working fine, it just does not work with my router.
Action 3
_ It looks like there is a known issue with some channels a Wifi router may use.
_ I disconnected from BT Wifi, ran iwlist wlan0 scan, and noticed that my router is currently using Channel 11. Interestingly enough, this is the channel mentioned for BT Wifi as well.
_ Unless I am missing something, this means that there is no point in switching to another channel.
Question
_ I am now running out of ideas - Is there some sort of set-up (possibly at wifi router level) that could explain this? I am surprised because none of my other devices (and none of the devices belonging to visiting friends) seems to have an issue attaching to my Wifi router - it is only my RPi3
I am really not an expert, neither with Wifi nor with Linux, and I am an absolute beginner with Rpi. Apologise if i am missing something obvious
Thanks in advance,
Bruno