tried to use rfkill to bring the wifi card back, fails :
after wake from suspend :
gilbert@alpha:~$ sudo rfkill list
1: dell-wifi: Wireless LAN
Soft blocked: no
Hard blocked: no
2: dell-bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
3: phy0: Wireless LAN
Soft blocked: no
Hard blocked: yes
4: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
trying to turn on :
gilbert@alpha:~$ sudo rfkill unblock 3
gilbert@alpha:~$ sudo rfkill
ID TYPE DEVICE SOFT HARD
1 wlan dell-wifi unblocked unblocked
2 bluetooth dell-bluetooth unblocked unblocked
3 wlan phy0 unblocked blocked
4 bluetooth hci0 unblocked unblocked
The RF Kill is done on suspend
And it does not work to bring the Wifi card ON when resuming the laptop.
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https://bugs.launchpad.net/bugs/1947558
Title:
rfkill fails to turn on wifi card on Dell Latitude 5490
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