>> Wi-Fi handling was significantly reworked. Please try the latest
>> version whether it still has the issue.
I was tested NM 1.28  and found it . but the problem was
automatically quickly recovered normal after the nm-dispatcher service
restarted .

Thomas Haller <thal...@redhat.com> 于2021年2月8日周一 下午3:03写道:
>
> Hi,
>
> On Sun, 2021-02-07 at 11:53 +0800, Heysion Yuan via networkmanager-list
> wrote:
> >
> > I found the NM didn't trigger scan_done probabilistically after S3 or
> > S4 resume .
> > I traced the NM do_sleep_wake  is normal and trigger scan by dbus to
> > wpa ,the wpa push scan result to dbus.
> > but NM didn't trigger scan_done signal and fetch scan result on dbus.
> > and I debug the device state change swap found the normal has
> > complete whole state switch but abnormal device state changed was
> > broken.
> >
> > ## LOG
> > ### Abnormal:
> >
> > NetworkManager[3449]: <info>  [1612253858.5131] device (wlan0):
> > device changed state 10 old_state 30 src/devices/nm-device.c
> > NetworkManager[3449]: <info>  [1612253858.6840] device (wlan0):
> > device changed state 20 old_state 10 src/devices/nm-device.c
> > NetworkManager[3449]: <info>  [1612253858.9756] device (wlan0):
> > device changed state 30 old_state 20 src/devices/nm-device.c
> >
> > The changed link: 30->10->20->30
>
> these log messages are not from any upstream version, are there? Which
> version were you testing? If these are from some printf debugging of
> yours, it is not enough to understand what is happening.
>
>
> also, scan_done() is no longer part of upstream. You should mention
> which version you are using.
>
> Wi-Fi handling was significantly reworked. Please try the latest
> version whether it still has the issue.
>
> > ### Normal:
> > NetworkManager[3449]: <info>  [1612253208.4739] device (wlan0):
> > device changed state 10 old_state 100 src/devices/nm-device.c
> > NetworkManager[3449]: <info>  [1612253208.7593] device (wlan0):
> > device changed state 20 old_state 10 src/devices/nm-device.c
> > NetworkManager[3449]: <info>  [1612253209.0477] device (wlan0):
> > device changed state 30 old_state 20 src/devices/nm-device.c
> > NetworkManager[3449]: <info>  [1612253210.1055] device (wlan0):
> > device changed state 40 old_state 30 src/devices/nm-device.c
> > NetworkManager[3449]: <info>  [1612253210.1062] device (wlan0):
> > device changed state 50 old_state 40 src/devices/nm-device.c
> > NetworkManager[3449]: <info>  [1612253210.1067] device (wlan0):
> > device changed state 60 old_state 50 src/devices/nm-device.c
> > NetworkManager[3449]: <info>  [1612253210.1470] device (wlan0):
> > device changed state 40 old_state 60 src/devices/nm-device.c
> > NetworkManager[3449]: <info>  [1612253210.1488] device (wlan0):
> > device changed state 50 old_state 40 src/devices/nm-device.c
> > NetworkManager[3449]: <info>  [1612253210.2118] device (wlan0):
> > device changed state 70 old_state 50 src/devices/nm-device.c
> > NetworkManager[3449]: <info>  [1612253210.2437] device (wlan0):
> > device changed state 80 old_state 70 src/devices/nm-device.c
> > NetworkManager[3449]: <info>  [1612253210.2475] device (wlan0):
> > device changed state 90 old_state 80 src/devices/nm-device.c
> > NetworkManager[3449]: <info>  [1612253210.2483] device (wlan0):
> > device changed state 100 old_state 90 src/devices/nm-device.c
> >
> > The changed link: 100->10->20->30->40->50->60->70->80->90->100
> >
> > Could you tell me where NM got the signal and what it working for ?
>
> Look at all the logs by enabling level=TRACE level.
>
> See
> https://cgit.freedesktop.org/NetworkManager/NetworkManager/tree/contrib/fedora/rpm/NetworkManager.conf#n28
> for infos about logging.
>
>
> best,
> Thomas
>
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