My wifi is not working after suspend on 15.04. I can click my way to success on the wifi icon in the menu bar (and the enable wifi option), but I want to use scripts to automate the procedure. Here is my attempt
1) create executable bash script /etc/pm/sleep.d/10_resume_wifi
with the contents
#!/bin/sh
case "$1" in
hibernate|suspend) ;;
thaw|resume)
nmcli r wifi off && nmcli r wifi on ;;
esac
2) create executable file /etc/system.d/system/wifi-resume.service
with contents
[Unit]
Description=Restart wifi after waking up
After=suspend.target
[Service]
Type=simple
ExecStart=-/etc/pm/sleep.d/10_resume_wifi
[Install]
WantedBy=suspend.target
and run sudo systemctl enable wifi-resume.service
This is not working, and I get the following lines from dmesg
after resuming from suspend
[11168.786104] cfg80211: World regulatory domain updated:
[11168.786111] cfg80211: DFS Master region: unset
[11168.786113] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[11168.786119] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[11168.786124] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[11168.786128] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm), (N/A)
[11168.786133] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[11168.786137] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[11168.968257] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[11169.004818] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[11169.006600] ata3.00: ACPI cmd ef/10:03:00:00:00:a0 (SET FEATURES) filtered out
[11169.009053] ata3.00: ACPI cmd ef/10:03:00:00:00:a0 (SET FEATURES) filtered out
[11169.009061] ata3.00: configured for UDMA/100
[11169.200846] firewire_core 0000:04:00.0: rediscovered device fw0
[11171.088442] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[11171.089310] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 (SET FEATURES) filtered out
[11171.090296] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 (SET FEATURES) filtered out
[11171.090469] ata1.00: configured for UDMA/100
[11171.615861] ERROR @wl_cfg80211_scan : WLC_SCAN error (-22)
After clicking my way to wifi, I get slightly different output from dmesg
[11331.635796] cfg80211: Calling CRDA for country: US
[11331.639456] cfg80211: Regulatory domain changed to country: US
[11331.639465] cfg80211: DFS Master region: FCC
Any suggestions for why the script-based approach is not working? I am new at this, so there are likely several errors. Thanks in advance!
Best Answer
After a little more digging, I found a single script (posted here) that connects my computer to wifi after suspend. In short, I created the executable script
/etc/systemd/system/wifi-resume.service
with the following contents:and ran the command
sudo systemctl enable wifi-resume.service
Many thanks to Sean for solution.