[SOLVED] Wifi disappears after suspend fails to resume

SoftVision · 2015-11-21 05:46:28

I just tried accessing my laptop after a few hours. The light on the sight suggested that it was somehow on even though the lid was shut. When I last left the laptop the light was blinking for suspend. But when I opened the lid, the screen did not turn on even after waiting for five minutes. I rebooted the laptop and the wifi does not show up at all now. My laptop works really well, but this is the third or fourth time this has randomly happened.

I have the Asus ZenBook UX305FA which uses the iwlwifi driver. My hard drive setup is LVM over LUKS. I also have tlp installed for power management. I checked the journalctl log but there doesn't seem to be anything other than a line which says "reboot" between when I left the laptop to suspend and when I tried to resume it.

So far, I've tried restarting the NetworkManager service as well as this command with no success:

sudo rmmod iwldvm && sudo modprobe iwlwifi

I would really appreciate any help with this!

Last edited by SoftVision (2015-11-21 20:22:43)

jasonwryan · 2015-11-21 06:03:35

Disable network manager and manually bring up your wifi connection: that way you will be able to ascertain where it is failing.

SoftVision · 2015-11-21 15:16:58

I disabled NetworkManager and I tried this as per the wiki instructions, but received no output:

iw dev

My wireless driver doesn't seem to be loaded even though I tried loading it manually as I mentioned in the original post. It is not listed when I run:

lspci -k

There is some loopback interface 'lo' listed for this command, but no wireless interface:

ip link

Rfkill does not block it either:

rfkill list

jasonwryan · 2015-11-21 18:32:15

Uninstall tlp, see if that helps...

SoftVision · 2015-11-21 19:46:30

I disabled the tlp services and uninstalled tlp and tlp-rdw. Still no wireless.

jasonwryan · 2015-11-21 19:49:57

Please paste the output of `pacman -Q linux && uname -a`

SoftVision · 2015-11-21 20:00:12

sudo pacman -Q linux && uname -a

linux 4.2.5-1
Linux asus-zenbook-ux305 4.2.5-1-ARCH #1 SMP PREEMPT Tue Oct 27 08:13:28 CET 2015 x86_64 GNU/Linux

jasonwryan · 2015-11-21 20:04:45

Well, if it isn't showing in lspci, you could see if it appears in dmesg, but otherwise I am out of ideas as to why it is not showing up.

SoftVision · 2015-11-21 20:22:03

I got it working.

After uninstalling tlp, I tried running `rfkill list all` again and this time it showed `asus-wlan` as an entry.

I searched for similar issues and found this thread.

This was the solution:

/etc/modprobe.d/blacklist.conf

blacklist asus_nb_wmi

There is a button on my keyboard to toggle airplane mode but that didn't seem to work when I had that driver whitelisted anyway. There seems to be a fix for that here, but for now I want to make sure this issue doesn't crop up again soon.

Update: I installed tlp again after this and discovered that it was the real culprit, not this module. I'm using powertop instead and there are no issues.

Last edited by SoftVision (2015-11-24 13:06:11)

Arch Linux

#1 2015-11-21 05:46:28

[SOLVED] Wifi disappears after suspend fails to resume

#2 2015-11-21 06:03:35

Re: [SOLVED] Wifi disappears after suspend fails to resume

#3 2015-11-21 15:16:58

Re: [SOLVED] Wifi disappears after suspend fails to resume

#4 2015-11-21 18:32:15

Re: [SOLVED] Wifi disappears after suspend fails to resume

#5 2015-11-21 19:46:30

Re: [SOLVED] Wifi disappears after suspend fails to resume

#6 2015-11-21 19:49:57

Re: [SOLVED] Wifi disappears after suspend fails to resume

#7 2015-11-21 20:00:12

Re: [SOLVED] Wifi disappears after suspend fails to resume

#8 2015-11-21 20:04:45

Re: [SOLVED] Wifi disappears after suspend fails to resume

#9 2015-11-21 20:22:03

Re: [SOLVED] Wifi disappears after suspend fails to resume

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