Wifi not working after suspend

Question

I have notebook Lenovo Z500, his wireless hw: Centrino Wireless-N 2230 (vendor - Intel). When I close the lid notebook suspends and when it is woken up wifi is disabled and there is no way to enable it. rfkill says that it is hardware blocked. I've tried to restart network manager, added iwlwifi module to SUSPEND_MODULES in /etc/pm/config.d/config, but only rebooting helps. On Win 7 everything is fine. Are there any ways to solve this problem? It's very annoying. My Ubuntu version is 14.04 LTS

lsmod | grep wmi output:

snd_rawmidi            30144  1 snd_seq_midi

snd_seq_device         14497  3 snd_seq,snd_rawmidi,snd_seq_midi

snd                    69238  17 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_seq_midi

Thanks in advance

My bad, after reading your question again, I realized my request was not really necessary. Does it work if you issue sudo rmmod iwlwifi && sudo modprobe iwlwifi after suspend? — Andrea Lazzarotto, Sep 07 '14 at 14:50
it tries to connect to network but it fails (disconnects and tries again and again). I had to rmmod and modprobe iwldvm module — DuXeN0N, Sep 07 '14 at 15:07

score 0 · Answer 1 · edited Apr 13 '17 at 12:24

0

According to your comment, you solve the problem by manually issuing rmmod iwldvm && modprobe iwldvm. In order to get it to work automatically after a resume, you need to create a script.

I will adapt the instructions posted in this answer to suit your needs. Run:

gksu gedit /etc/pm/sleep.d/20_fix_wifi

Add the following content:

case "${1}" in
    resume|thaw)
        rmmod iwldvm && modprobe iwldvm
;;
esac

Save the file and reboot. Try to suspend and resume to see if it works.

edited Apr 13 '17 at 12:24

Community

1

answered Sep 08 '14 at 08:36

Andrea Lazzarotto

7,956

this did not help :( – DuXeN0N Sep 27 '14 at 10:15
It works if you do it in the terminal but not with the script? – Andrea Lazzarotto Sep 28 '14 at 12:51
No, it doesn't work. You a little bit misunderstood me. Module reloads and notebook tries to connect but unsuccessful. I can see connecting icon but finally it says: "network disconnected" and tries again and again – DuXeN0N Sep 28 '14 at 12:53
...and rfkill says it's not hardware blocked, right? – Andrea Lazzarotto Sep 29 '14 at 08:40
right. not blocked but can't connect – DuXeN0N Sep 30 '14 at 14:35
Ok. Does it work if you switch it off and back on? Like rfkill block wifi && rfkill unblock wifi? – Andrea Lazzarotto Sep 30 '14 at 17:35
No, it doesn't. I've also tried ip link set wlan0 up and restart network manager service, but no – DuXeN0N Sep 30 '14 at 18:07
The last thing I can think of is trying to blacklist the iwldvm module all together. After this, I have no more ideas... :( – Andrea Lazzarotto Sep 30 '14 at 18:12

Wifi not working after suspend

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