I'm running Linux Mint with the i3 window manager and the i3statu bar. I had been noticing the the W: (wifi) status line of i3status would sometimes report "down" for a few seconds even though sending continuous pings throughout the down/up interval would show no loss of connectivity.
I found out that i3status uses iwconfig to get signal strength and ip to display in the status bar. During those times when W: is reported as "down," this is iwconfig's output. (I am running iwconfig version 30.)
wlan0 IEEE 802.11abgn ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-Power=22 dBm Retry short limit:7 RTS thr:off Fragment thr:off Power Management:off
At all other times, iwconfig's output shows this:
wlan0 IEEE 802.11abgn ESSID:"Zoinks5" Mode:Managed Frequency:5.765 GHz Access Point: 2C:30:33:43:73:64 Bit Rate=6 Mb/s Tx-Power=22 dBm Retry short limit:7 RTS thr:off Fragment thr:off Power Management:off Link Quality=63/70 Signal level=-47 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0
As I mentioned, I don't seem experience actual loss of connectivity, but I am very curious why iwconfig seems to lose the association. Or is that that NetworkManager is reconnecting? Or is it something else entirely?
Quick Edit to say that I don't seem to see this same behavior on my 2.4ghz network. Same AP. This only seems to happen on my 5ghz network. Also, the 5ghz signal strength is lower, but around 83% consistently which doesn't seem that bad.
Edit: I'm in the US. My wireless router is a Netgear R6400. Connecting over 'n' spec. There is one wall between myself and the wireless router. Distance to router is less than 10 feet.