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#1 2016-07-14 12:19:35
- jerf
- Member
- Registered: 2009-06-03
- Posts: 33
[solved] systemd launches wpa_supplicant, prevents netctl from working
After a recent update I started getting the following issue.
I use netctl to automatically connect to wireless and wired networks on my laptop. After a recent update it stopped working. Long story short, it turned out that systemd for some reason started launching an instance of wpa_supplicant (with -u argument) before starting the netctl service, which prevents netctl from working, since wpa_supplicant internally used by netctl fails to authenticate if there is another instance of wpa_supplicant already running.
wpa_supplicant is getting launched by systemd even if I disable netctl and (and I don't have any other network-related services). Here are the services which are enabled if I disable netctl:
$ systemctl list-unit-files --type=service | grep enabled
asus-kbd-backlight.service enabled
autovt@.service enabled
display-manager.service enabled
earlyoom.service enabled
getty@.service enabled
ntpd.service enabled
sddm.service enabled
tlp.service enabled
watchdog.service enabledAs I said, in this case I still have wpa_supplicant running in the background after the startup (launched by systemd with argument "-u"). If I kill it manually and then either start netctl, or connect to network manually using wpa_supplicant and dhcpcd, everything works.
How to disable this systemd behavior? What causes this instance of wpa_supplicant to be run? This started to happen only after I updated the system recently, before that I didn't have this problem, and I didn't change anything with my setup of Arch.
Thanks!
Last edited by jerf (2016-07-14 15:52:35)
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#2 2016-07-14 15:15:47
- ewaller
- Administrator
- From: Pasadena, CA
- Registered: 2009-07-13
- Posts: 19,785
Re: [solved] systemd launches wpa_supplicant, prevents netctl from working
Okay, let us see what is starting it. Look at the output of systemctl status. It will show a tree as to what started what. If you like, post it here. Get the full output with systemctl status --no-pager
Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
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#3 2016-07-14 15:33:36
- jerf
- Member
- Registered: 2009-06-03
- Posts: 33
Re: [solved] systemd launches wpa_supplicant, prevents netctl from working
Okay, let us see what is starting it. Look at the output of systemctl status. It will show a tree as to what started what. If you like, post it here. Get the full output with systemctl status --no-pager
Here is the output of systemctl status:
● ub
State: degraded
Jobs: 0 queued
Failed: 2 units
Since: Чт 2016-07-14 18:22:34 MSK; 1min 46s ago
CGroup: /
├─init.scope
│ └─1 /sbin/init
├─system.slice
│ ├─dbus.service
│ │ └─453 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation
│ ├─wpa_supplicant.service
│ │ └─569 /usr/bin/wpa_supplicant -u
│ ├─systemd-journald.service
│ │ └─223 /usr/lib/systemd/systemd-journald
│ ├─ntpd.service
│ │ └─478 /usr/bin/ntpd -g -u ntp:ntp
│ ├─udisks2.service
│ │ ├─651 /usr/lib/udisks2/udisksd --no-debug
│ │ └─826 /sbin/mount.ntfs /dev/md126p4 /run/media/petya/OS -o rw,nodev,nosuid,uid=1000,gid=100,uhelper=udisks2
│ ├─upower.service
│ │ └─658 /usr/lib/upower/upowerd
│ ├─systemd-logind.service
│ │ └─450 /usr/lib/systemd/systemd-logind
│ ├─watchdog.service
│ │ └─464 /usr/bin/watchdog
│ ├─systemd-udevd.service
│ │ └─256 /usr/lib/systemd/systemd-udevd
│ ├─polkit.service
│ │ └─567 /usr/lib/polkit-1/polkitd --no-debug
│ ├─NetworkManager.service
│ │ └─461 /usr/bin/NetworkManager --no-daemon
│ ├─sddm.service
│ │ ├─476 /usr/bin/sddm
│ │ └─504 /usr/lib/xorg-server/Xorg -nolisten tcp -auth /var/run/sddm/{492226a2-8131-4462-bfdf-9f8d9dd555c8} -background none -noreset -displayfd 18 vt1
│ └─rtkit-daemon.service
│ └─840 /usr/lib/rtkit/rtkit-daemon
└─user.slice
└─user-1000.slice
├─user@1000.service
│ ├─dbus.service
│ │ ├─697 /usr/bin/dbus-daemon --session --address=systemd: --nofork --nopidfile --systemd-activation
│ │ ├─771 /usr/bin/kglobalaccel5
│ │ ├─782 /usr/lib/dconf/dconf-service
│ │ ├─808 /usr/lib/kf5/kscreen_backend_launcher
│ │ └─946 /usr/bin/kuiserver5
│ ├─obex.service
│ │ └─910 /usr/lib/bluetooth/obexd
│ ├─pulseaudio.service
│ │ └─836 /usr/bin/pulseaudio --daemonize=no
│ └─init.scope
│ ├─684 /usr/lib/systemd/systemd --user
│ └─685 (sd-pam)
└─session-c2.scope
├─683 /usr/lib/sddm/sddm-helper --socket /tmp/sddm-auth496a48a9-8b8d-4472-93fc-d879473f31aa --id 1 --start /usr/bin/startkde --user petya
├─690 /bin/sh /usr/bin/startkde
├─736 /usr/lib/kf5/start_kdeinit --kded +kcminit_startup
├─737 kdeinit5: Running...
├─738 klauncher [kdeinit5] --fd=9
├─741 kded5 [kdeinit5]
├─743 kcminit_startup [kdeinit5]
├─761 /usr/bin/kaccess
├─763 kwrapper5 /usr/bin/ksmserver
├─765 /usr/bin/ksmserver
├─769 /usr/bin/kactivitymanagerd start-daemon
├─790 kwin_x11 -session 10756200000144200754000000069440002_1468509732_759610
├─791 /usr/bin/baloo_file
├─792 /usr/bin/krunner
├─805 /usr/bin/plasmashell --shut-up
├─823 /usr/lib/polkit-kde/polkit-kde-authentication-agent-1
├─833 /usr/bin/yakuake -session 10756200000144200762700000069440009_1468509732_756429
├─851 /bin/bash
├─884 /usr/bin/ginn
├─886 /usr/bin/xembedsniproxy
├─890 syndaemon -t -k -i 2 -d
├─912 /home/petya/.dropbox-dist/dropbox-lnx.x86_64-6.4.14/dropbox /newerversion
├─955 su -
├─957 -bash
└─986 systemctl statusFor some reason, wpa_supplicant.service and NetworkManager.service are being started. Why is it happening? They are disabled:
$systemctl list-unit-files --type=service
UNIT FILE STATE
accounts-daemon.service disabled
acpid.service disabled
adb.service disabled
alsa-restore.service static
alsa-state.service static
asus-kbd-backlight.service enabled
autovt@.service enabled
avahi-daemon.service disabled
avahi-dnsconfd.service disabled
blk-availability.service disabled
bluetooth.service disabled
canberra-system-bootup.service disabled
canberra-system-shutdown-reboot.service disabled
canberra-system-shutdown.service disabled
colord.service static
console-getty.service disabled
console-shell.service disabled
container-getty@.service static
cronie.service disabled
cups-browsed.service disabled
dbus-org.freedesktop.hostname1.service static
dbus-org.freedesktop.import1.service static
dbus-org.freedesktop.locale1.service static
dbus-org.freedesktop.login1.service static
dbus-org.freedesktop.machine1.service static
dbus-org.freedesktop.network1.service disabled
dbus-org.freedesktop.resolve1.service disabled
dbus-org.freedesktop.timedate1.service static
dbus.service static
debug-shell.service disabled
dhclient@.service disabled
dhcpcd.service disabled
dhcpcd@.service disabled
display-manager.service enabled
dm-event.service disabled
dropbox@.service disabled
earlyoom.service enabled
emergency.service static
fancontrol.service disabled
fluidsynth.service disabled
fstrim.service static
ftpd.service disabled
geoclue.service static
getty@.service enabled
git-daemon@.service static
gpm.service disabled
haveged.service disabled
healthd.service disabled
hplip-printer@.service static
ifplugd@.service disabled
initrd-cleanup.service static
initrd-parse-etc.service static
initrd-switch-root.service static
initrd-udevadm-cleanup-db.service static
ip6tables.service disabled
iptables.service disabled
irexec.service disabled
kmod-static-nodes.service static
krb5-kadmind.service disabled
krb5-kdc.service disabled
krb5-kpropd.service disabled
krb5-kpropd@.service static
ldconfig.service static
lircd-uinput.service disabled
lircd.service disabled
lircmd.service disabled
lm_sensors.service disabled
logrotate.service static
lvm2-lvmetad.service disabled
lvm2-monitor.service disabled
lvm2-pvscan@.service static
mdadm-grow-continue@.service static
mdadm-last-resort@.service static
mdmon@.service static
mdmonitor.service static
mkinitcpio-generate-shutdown-ramfs.service static
ModemManager.service disabled
mysqld.service disabled
netctl-auto@.service disabled
netctl-ifplugd@.service disabled
netctl-sleep.service disabled
netctl.service disabled
netctl@.service static
NetworkManager-dispatcher.service disabled
NetworkManager-wait-online.service disabled
NetworkManager.service disabled
nscd.service disabled
ntpd.service enabled
ntpdate.service disabled
openslp.service disabled
org.cups.cups-lpd@.service static
org.cups.cupsd.service disabled
polkit.service static
ppp@.service disabled
quotaon.service static
rescue.service static
rfkill-block@.service disabled
rfkill-unblock@.service disabled
rlogin@.service static
rsh@.service static
rtkit-daemon.service disabled
saned@.service static
sddm.service enabled
sensord.service disabled
serial-getty@.service disabled
shadow.service static
snmpd.service disabled
snmptrapd.service disabled
speech-dispatcherd.service disabled
sshd.service disabled
sshd@.service static
sshdgenkeys.service static
svnserve.service disabled
systemd-ask-password-console.service static
systemd-ask-password-wall.service static
systemd-backlight@.service static
systemd-binfmt.service static
systemd-coredump@.service static
systemd-exit.service static
systemd-firstboot.service static
systemd-fsck-root.service static
systemd-fsck@.service static
systemd-halt.service static
systemd-hibernate-resume@.service static
systemd-hibernate.service static
systemd-hostnamed.service static
systemd-hwdb-update.service static
systemd-hybrid-sleep.service static
systemd-importd.service static
systemd-initctl.service static
systemd-journal-catalog-update.service static
systemd-journal-flush.service static
systemd-journal-gatewayd.service indirect
systemd-journal-remote.service indirect
systemd-journal-upload.service disabled
systemd-journald.service static
systemd-kexec.service static
systemd-localed.service static
systemd-logind.service static
systemd-machine-id-commit.service static
systemd-machined.service static
systemd-modules-load.service static
systemd-networkd-wait-online.service disabled
systemd-networkd.service disabled
systemd-nspawn@.service disabled
systemd-poweroff.service static
systemd-quotacheck.service static
systemd-random-seed.service static
systemd-reboot.service static
systemd-remount-fs.service static
systemd-resolved.service disabled
systemd-rfkill.service static
systemd-suspend.service static
systemd-sysctl.service static
systemd-sysusers.service static
systemd-timedated.service static
systemd-timesyncd.service disabled
systemd-tmpfiles-clean.service static
systemd-tmpfiles-setup-dev.service static
systemd-tmpfiles-setup.service static
systemd-udev-settle.service static
systemd-udev-trigger.service static
systemd-udevd.service static
systemd-update-done.service static
systemd-update-utmp-runlevel.service static
systemd-update-utmp.service static
systemd-user-sessions.service static
systemd-vconsole-setup.service static
talk.service indirect
teamd@.service static
telnet@.service static
tlp-sleep.service disabled
tlp.service enabled
udisks2.service disabled
ufw.service disabled
upower.service disabled
usbmuxd.service static
user@.service static
uuidd.service indirect
watchdog.service enabled
wpa_supplicant-nl80211@.service disabled
wpa_supplicant-wired@.service disabled
wpa_supplicant.service disabled
wpa_supplicant@.service disabled
184 unit files listed.Apparently, something calls them, but what? How to figure it out?
Thanks!
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#4 2016-07-14 15:42:35
- Scimmia
- Fellow
- Registered: 2012-09-01
- Posts: 11,553
Re: [solved] systemd launches wpa_supplicant, prevents netctl from working
Because of tlp
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#5 2016-07-14 15:51:59
- jerf
- Member
- Registered: 2009-06-03
- Posts: 33
Re: [solved] systemd launches wpa_supplicant, prevents netctl from working
Because of tlp
You're right, thanks! For some reason tlp.service wants NetworkManager.service, as written in the ArchWiki TLP article.
It's weird though that I started to encounter this problem only now, as I both had TLP and used netctl already for ages.
Masking NetworkManager.service and wpa_supplicant.service solved the problem.
Thanks!
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#6 2016-07-14 15:53:18
- ewaller
- Administrator
- From: Pasadena, CA
- Registered: 2009-07-13
- Posts: 19,785
Re: [solved] systemd launches wpa_supplicant, prevents netctl from working
Because of tlp
Nice catch !
Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
---
How to Ask Questions the Smart Way
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