Lots of wpa_supplicant CTRL-EVENT-SIGNAL-CHANGE in syslog

[Clyde McQueen]

Hi, I'm seeing a ton of messages like this in syslog:

Oct 14 16:58:45 beaglebone wpa_supplicant[1047]: wlan0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-40 noise=9999 txrate=117000

Oct 14 16:58:47 beaglebone wpa_supplicant[1047]: wlan0: CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-50 noise=9999 txrate=117000

Oct 14 16:58:48 beaglebone wpa_supplicant[1047]: wlan0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-40 noise=9999 txrate=117000

Oct 14 16:58:49 beaglebone wpa_supplicant[1047]: wlan0: CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-50 noise=9999 txrate=117000

Oct 14 16:58:53 beaglebone wpa_supplicant[1047]: wlan0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-40 noise=9999 txrate=144400

 I've searched a bit, and it seems to be associated with wifi problems, but the board is close to the hub, and I'm not experiencing any problems.** Any ideas?

Thanks,

/Clyde

**Well, actually 1 problem: wifi is the long pole in the boot process at around 30s, which I'm also trying to figure out. Still, it always comes up after waiting for 30s, and then it stays up.

[bodd...@gmail.com]

Same problem but in my case, after about 15 minutes the network is inaccessible but my wifi dongle still connected to my wifi network.

[dcl...@amethodschools.org]

I'm seeing the same thing in our logs, our connections keep getting reset.  Did you get an answer?

[jeffs...@gmail.com]

I see this error message when I run the wpa_cli.

I suspect it is related to https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=777170 .  

There is more advice at https://ubuntuforums.org/showthread.php?t=2011191 .  A responder recommends /sbin/iwconfig wlan0 power off 

which is not a bad idea - turning off power management on a desktop - but my WiFi adapter doesn't support it.

Clearly, more research is required.