I can also reproduce the same issue on my own Lenovo ThinkPad X200.
03:00.0 Ethernet controller [0200]: Qualcomm Atheros AR242x / AR542x Wireless
Network Adapter (PCI-Express) [168c:001c] (rev 01)
Subsystem: Qualcomm Atheros AR242x / AR542x Wireless Network Adapter
(PCI-Express) [168c:0035]
...
Kernel driver in use: ath5k
Kernel modules: ath5k
** Description changed:
- Description: Ubuntu Yakkety Yak (development branch)
+ Description: Ubuntu Yakkety Yak (development branch)
Release: 16.10
Packages:
- libnm-glib-vpn1:amd64 1.2.2-0ubuntu2
+ 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=10 --s3-max-delay=10
--s3-delay-delta=5
+ 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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https://bugs.launchpad.net/bugs/1585863
Title:
WiFi malfunction after suspend & resume stress
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