i'm running Ubuntu 18.10 with Gnome - Suspend to Ram isn't working. my syslog told me that wpa_supllicant refuses to freeze. I already tried a couple fixes but none are working. Most of them are different variations of this. I Also tried using a different Firmware version as stated here. Although this is a bit over the top since wifi is working fine and my idea is to run a script ,when hitting the suspend button, that turns the wifi off, before the actual suspend action takes place.
Suspend to Ram is working if i disable wifi manually before suspending. Is there a way to automate it?
Wireless Chipset:
description: Wireless interface
product: QCA6174 802.11ac Wireless Network Adapter
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:04:00.0
logical name: wlp4s0
version: 20
serial: c0:38:96:2f:a8:1f
width: 64 bits
clock: 33MHz
capabilities: bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=ath10k_pci driverversion=4.18.0-13-generic firmware=SW_RM.1.1.1-00157-QCARMSWPZ-1
Update #1: as @GAD3R pointed out a Script in /lib/systemd/system-sleep will do the trick. However it doesn't seem to work. I created the Script
killwpa
in
/lib/systemd/system-sleep
and made it executable using
sudo chmod +x
I still cant suspend with Wifi on here's the output of my syslog:
Freezing user space processes ...
Freezing of tasks failed after 20.002 seconds (9 tasks refusing to freeze, wq_busy=0):
wpa_supplicant D 0 1013 1 0x00000004
Update 2: I modified the Script to unload the driver using modprobe
and stopping the network manager - still freezing.
Script:
#!/bin/bash
if [ "${1}" == "pre" ]; then
modprobe -rv ath10k_pci
systemctl stop NetworkManager.service
elif [ "${1}" == "post" ]; then
modprobe -v ath10k_pci
systemctl start NetworkManager.service
fi
syslog ouput:
Feb 1 09:13:25 aaron-GACK kernel: [ 1350.265251] Freezing user space processes ...
Feb 1 09:13:25 aaron-GACK kernel: [ 1370.272019] Freezing of tasks failed after 20.006 seconds (3 tasks refusing to freeze, wq_busy=0):
Feb 1 09:13:25 aaron-GACK kernel: [ 1370.274617] wpa_supplicant D 0 1036 1 0x00000004
Update 3: I tried simplifying it and use a single script to unload the driver and kill wpa as recommended by GAD3R:
!/bin/bash
if [ "${1}" == "pre" ]; then
modprobe -rv ath10k_pci
/usr/bin/pkill wpa_supplicant
fi
Holy Moly - it worked! Back after suspending and Wifi is back on as well.
Update 4: Nevermind. Tried Suspending again after the successful try...aaaand freeze again. Syslog:
Feb 1 09:27:30 aaron-GACK kernel: [ 421.558759] Freezing user space processes ...
Feb 1 09:27:30 aaron-GACK kernel: [ 441.561752] Freezing of tasks failed after 20.002 seconds (10 tasks refusing to freeze, wq_busy=0):
Feb 1 09:27:30 aaron-GACK kernel: [ 441.564343] wpa_supplicant D 0 1082 1 0x00000004