To get log into file for multiple WLAN interface you would have to run one wpa_supplicant instance per WLAN interface with -f and -d options. This way you'll get one log file per interface. I don't think, that wpa_supplicant would automatically change its verbosity level after connection. You could submit such a feature request.
Another way to troubleshoot your problem i.e. to get connection info, would be D-Bus. See API description.
Answer from yegorich on Stack ExchangeNetBeez
netbeez.net › home › blog › how to read the wpa supplicant logs
Linux for Wireless Engineers: How to Read the WPA Supplicant Logs
March 11, 2024 - In this blog post about WPA supplicant options. Up next, we’ll talk about the last three options: -f /var/log/wpa_supplicant.log: specifies the file that wpa_supplicant will logs any messages
Raspberry Pi Forums
forums.raspberrypi.com › board index › using the raspberry pi › beginners
Make wpa_supplicant log to /var/log/wpa.log automatically? - Raspberry Pi Forums
-f /var/log/wpa.log for adding this to the wpa_supplicant start, but I don't know where to add this and maybe there is a smarter option for wpa_supplicant.conf?
wpa supplicant - How to make wpa_supplicant automatically log into file - Unix & Linux Stack Exchange
I am trying to troubleshoot a wireless connection on FreeBSD. I am manually editing the /etc/wpa_supplicant.conf file So far the wpa_cli status only tells me that it's Unauthorized. I'd like to ... More on unix.stackexchange.com
adb - how to debug wpa_supplicant in android? - Stack Overflow
My specific questions are: How to change the debug level to MSG_DEBUG of wpa_supplicant in Android? Do I need to compile the wpa_supplicant to achieve this goal? How to view the logs? I had tried t... More on stackoverflow.com
Wpa-supplicant logs
I just found this thread because I was searching for an answer about this as well. My journalctl is filled up with lines with this message. Is it something I should worry about, is something not working correctly or is it just a message and no warning or error? More on discussion.fedoraproject.org
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October 25, 2024Explanation on wpa_supplicant logs
Sep 29 15:17:26 khokh wpa_supplicant[1327]: wlp0s20f3: CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-63 noise=9999 txrate=585000 Sep 29 15:17:29 khokh wpa_supplicant[1327]: wlp0s20f3: Reject scan trigger since one is already pending Sep 29 15:17:41 khokh wpa_supplicant[1327]: wlp0s20f3: ... More on discussion.fedoraproject.org
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September 29, 2021NetBeez
netbeez.net › home › blog › how to read the eap wpa supplicant logs
Linux for Network Engineers: How to Read EAP WPA Supplicant Logs
January 23, 2025 - If you follow the WPA Supplicant daemon from my previous post, you should have the logs saved in the file “/var/log/wpa_supplicant.log”. From this point forward we are working under the assumption that you have this file in your system.
LinkedIn
linkedin.com › pulse › linux-wireless-engineers-how-read-wpa-supplicant-logs-vouzis
Linux for Wireless Engineers: How to Read the WPA Supplicant Logs
April 17, 2019 - For more details about the options you can visit this post. Up next, we’ll talk about the last three options: -f /var/log/wpa_supplicant.log: specifies the file that wpa_supplicant will logs any messages
ArchWiki
wiki.archlinux.org › title › Wpa_supplicant
wpa_supplicant - ArchWiki
It is impossible to eliminate these log entries by setting wpa_supplicant's own log level to WARNING or higher.
GitHub
gist.github.com › wch › 8305204
Script for restarting wpa_supplicant in debug mode · GitHub
May be too late. In the latest wpa_supplicant, you have to enable logging by building it with DEBUG_LOG_FILE=y in the .config file to enable the -f flag.
forum.pistar.uk
forum.pistar.uk › home › board index › software support › wifi setup
How do you enable WiFi (wpa_supplicant) logging? - forum.pistar.uk
Thanks It’s complicated in my case because I am using a Pi Zero W without a physical console (or wired LAN) so restarting wpa_supplicant will kill my SSH console session. I am hoping to find a place or config file where I can add the debug file parameters. -f /var/log/wpa_supplicant.log -t -d and restart.
Linux Man Pages
linux.die.net › man › 8 › wpa_supplicant
wpa_supplicant(8) - Linux man page
wpa_supplicant -B -c/etc/wpa_supplicant.conf -iwlan0 · This makes the process fork into background. The easiest way to debug problems, and to get debug log for bug reports, is to start wpa_supplicant on foreground with debugging enabled:
Red Hat
bugzilla.redhat.com › show_bug.cgi
1353138 – „-f /var/log/wpa_supplicant.log” option appears two times on the command line for wpa_supplicant
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red ...
Top answer 1 of 2
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- Try wpa_cli loglevel command to change the log level
- System partition is read only partition, use
-c /data/misc/wifi/as that folder is created for wpa_supplicant - Logs can be viewed via logcat:
adb logcat wpa_supplicant:V *:S
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in the wpa_common.c file,you can find the wpa_printf function output the debug log,you cant use MSG_DEBUG as a parameter,that's you question 1 and 2
GitHub
gist.github.com › claudioap › bcccc928ad0fdb44ebd5
wpa_supplicant logs · GitHub
wpa_supplicant logs. GitHub Gist: instantly share code, notes, and snippets.
LinkedIn
linkedin.com › pulse › how-read-eap-wpa-supplicant-logs-panagiotis-vouzis
How to Read the EAP WPA Supplicant Logs
October 16, 2019 - If you follow the WPA Supplicant daemon from my previous post, you should have the logs saved in the file “/var/log/wpa_supplicant.log”. From this point forward we are working under the assumption that you have this file in your system.
GitHub
gist.github.com › nartes › 7d59a6e42e2bbe1767892bc212580201
wpa_supplicant.log · GitHub
wpa_supplicant.log · This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Fedora Discussion
discussion.fedoraproject.org › ask fedora
Wpa-supplicant logs - Fedora Discussion
October 25, 2024 - I just found this thread because I was searching for an answer about this as well. My journalctl is filled up with lines with this message. Is it something I should worry about, is something not working correctly or is it just a message and no warning or error?
Fedora Discussion
discussion.fedoraproject.org › ask fedora
Explanation on wpa_supplicant logs - Fedora Discussion
September 29, 2021 - Sep 29 15:17:26 khokh wpa_supplicant[1327]: wlp0s20f3: CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-63 noise=9999 txrate=585000 Sep 29 15:17:29 khokh wpa_supplicant[1327]: wlp0s20f3: Reject scan trigger since one is already pending Sep 29 15:17:41 khokh wpa_supplicant[1327]: wlp0s20f3: ...
Google Groups
groups.google.com › g › android-porting › c › UZ8sZe_IR6c
Disabling wpa_supplicant logs
You can also disable all the stdout message by compile the wpa_supplicant with CONFIG_NO_STDOUT_DEBUG.
Super User
superuser.com › questions › 1281608 › wpa2-wpa-supplicant-wireless-hotspot-logs
linux - WPA2 / wpa_supplicant wireless hotspot logs - Super User
Jan 01 12:39:20 Hostname wpa_supplicant[1370]: WPA: wpa_sm_step() called recursively Jan 01 12:39:32 Hostname wpa_supplicant[1370]: WPA: wpa_sm_step() called recursively Jan 01 12:39:45 Hostname wpa_supplicant[1370]: WPA: wpa_sm_step() called recursively · Would it be possible to increase the verbosity of these error messages and view what kinds of passwords they're trying? ... That log message doesn’t suggest a bad password attempt to me.
NetBeez
netbeez.net › home › blog › how to control wpa supplicant
Linux for Wireless Engineers: How to Control WPA Supplicant
February 9, 2026 - The benefit of using interactive mode is that you will see log messages from the wpa_supplicant process printed in the session (instead of monitoring the log file /var/log/netbeez/wpa_supplicant.log).