Some additional information: It looks like NetworkManager is part of the
problem / solution.
--> Linked to networkmanager <--
If wifi is disabled (nmcli radio wifi off) the suspend works as expected.
Unfortunately, when scripting this into a systemctl script hooking to
suspend.target, networkmanager is killed before the script is executed, thus
networkmanager cannot respond anymore to the command.
Example of this systemctl script included here:
[Unit]
Description=Network suspend service
Before=sleep.target
StopWhenUnneeded=yes
[Service]
User=root
Type=oneshot
RemainAfterExit=yes
ExecStart=/usr/bin/sudo -u $USER /bin/bash -lc 'nmcli radio wifi off'
ExecStart=/usr/bin/sleep 5
[Install]
WantedBy=sleep.target
** Also affects: network-manager (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1827879
Title:
Killer Wireless 1525 firmware crashes on suspend
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