Public bug reported:
Hi,
I'm constantly having issues where my WiFi connection doesn't re-
establish after resuming from suspend. I think it may be a race where
the interface isn't ready yet and systemd-sleep calls /lib/systemd
/system-sleep/wpasupplicant (which is a wrapper to wpa_cli).
I normally restart NetworkManager but then found that calling 'wpa_cli
resume' works also.
Here's the logs:
| Mar 12 13:53:06 ragnar.local kernel: psmouse serio1: synaptics: quirked
min/max coordinates: x [1024..5112], y [2024..4832]
| Mar 12 13:53:06 ragnar.local kernel: PM: resume of devices complete after
562.709 msecs
| Mar 12 13:53:06 ragnar.local kernel: PM: Finishing wakeup.
| Mar 12 13:53:06 ragnar.local systemd[1]: Time has been changed
| Mar 12 13:53:06 ragnar.local systemd[1066]: Time has been changed
| Mar 12 13:53:06 ragnar.local kernel: Restarting tasks ... done.
| Mar 12 13:53:06 ragnar.local systemd-sleep[29174]: System resumed.
| Mar 12 13:53:06 ragnar.local systemd-sleep[29174]: Failed to connect to
non-global ctrl_ifname: (nil) error: No such file or directory
| Mar 12 13:53:06 ragnar.local systemd-sleep[29227]:
/lib/systemd/system-sleep/wpasupplicant failed with error code 255.
| Mar 12 13:53:06 ragnar.local systemd[1]: Started Suspend.
| Mar 12 13:53:06 ragnar.local systemd[1]: sleep.target: Unit not needed
anymore. Stopping.
| Mar 12 13:53:06 ragnar.local systemd[1]: Stopped target Sleep.
| Mar 12 13:53:06 ragnar.local systemd[1]: Reached target Suspend.
| Mar 12 13:53:06 ragnar.local systemd[1]: suspend.target: Unit is bound to
inactive unit systemd-suspend.service. Stopping, too.
| Mar 12 13:53:06 ragnar.local NetworkManager[23292]: <info> wake requested
(sleeping: yes enabled: yes)
| Mar 12 13:53:06 ragnar.local systemd[1]: Stopped target Suspend.
| Mar 12 13:53:06 ragnar.local NetworkManager[23292]: <info> waking up...
| Mar 12 13:53:06 ragnar.local systemd-logind[662]: Operation 'sleep' finished.
| Mar 12 13:53:06 ragnar.local kernel: IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link
is not ready
| Mar 12 13:53:06 ragnar.local kernel: iwlwifi 0000:03:00.0: L1 Enabled - LTR
Enabled
| Mar 12 13:53:06 ragnar.local NetworkManager[23292]: <info> (wlp3s0): device
state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
| Mar 12 13:53:06 ragnar.local kernel: iwlwifi 0000:03:00.0: L1 Enabled - LTR
Enabled
| Mar 12 13:53:07 ragnar.local kernel: iwlwifi 0000:03:00.0: L1 Enabled - LTR
Enabled
| Mar 12 13:53:07 ragnar.local kernel: iwlwifi 0000:03:00.0: L1 Enabled - LTR
Enabled
| Mar 12 13:53:07 ragnar.local NetworkManager[23292]: <info> NetworkManager
state is now DISCONNECTED
| Mar 12 13:53:07 ragnar.local kernel: IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link
is not ready
| Mar 12 13:53:07 ragnar.local wpa_supplicant[23157]: dbus:
wpa_dbus_get_object_properties: failed to get object properties: (none) none
| Mar 12 13:53:07 ragnar.local wpa_supplicant[23157]: dbus: Failed to construct
signal
| Mar 12 13:53:07 ragnar.local wpa_supplicant[23157]: Could not read interface
p2p-dev-wlp3s0 flags: No such device
| Mar 12 13:53:07 ragnar.local NetworkManager[23292]: <info> (wlp3s0):
supplicant interface state: starting -> ready
| Mar 12 13:53:07 ragnar.local NetworkManager[23292]: <info> (wlp3s0): device
state change: unavailable -> disconnected (reason 'supplicant-available') [20
30 42]
| Mar 12 13:53:07 ragnar.local NetworkManager[23292]: <info> Device 'wlp3s0'
has no connection; scheduling activate_check in 0 seconds.
| Mar 12 13:53:07 ragnar.local kernel: IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link
is not ready
Thanks,
Haw
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: New
** Affects: wpasupplicant (Ubuntu)
Importance: Undecided
Status: New
** Tags: xenial
** Tags added: xenial
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https://bugs.launchpad.net/bugs/1556357
Title:
WiFi fails to resume after suspend; Race with wpasupplicant / wpa_cli
resume?
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