I finally worked around my problem by adding a script in /lib/systemd
/system-sleep/:
$ cat /lib/systemd/system-sleep/12_wifi
#!/bin/bash
case $1 in
"post")
# disable/enable wifi
rfkill block wifi; rfkill unblock wifi
logger "reenabled wifi"
;;
esac
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Packages, which is subscribed to network-manager in Ubuntu.
https://bugs.launchpad.net/bugs/1585863
Title:
WiFi malfunction after suspend & resume stress - sudo wpa_cli scan
required to fix it.
Status in NetworkManager:
New
Status in OEM Priority Project:
New
Status in OEM Priority Project xenial series:
New
Status in network-manager package in Ubuntu:
Confirmed
Bug description:
Description: Ubuntu Yakkety Yak (development branch)
Release: 16.10
Packages:
libnm-glib-vpn1:amd64 1.2.2-0ubuntu2
libnm-glib4:amd64 1.2.2-0ubuntu2
libnm-util2:amd64 1.2.2-0ubuntu2
libnm0:amd64 1.2.2-0ubuntu2
network-manager 1.2.2-0ubuntu2
Reproduce steps:
1. Install fwts by `sudo apt-get install fwts`.
2. Run the suspend & resume stress test.
sudo fwts s3 --s3-multiple=30 --s3-min-delay=5 --s3-max-delay=5
--s3-delay-delta=5
Expected result:
The WiFi still functioned.
Actual result:
The WiFi can not connect to any access point and we have to execute `sudo
wpa_cli scan` manually to make it work again.
P.S. Ubuntu 16.04 also has the same issue.
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