Intermittently when an Acer Aspire ONE suspends in Ubuntu 14.10 then the WIFI does not come back. The hardware switch (a non-latching slider switch on the front right hand side of the laptop) has no effect. Rebooting and disabling/enabling Networking has no effect.
The rfkill list command will show,
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: yes
One way I found to clear this is to power down the laptop and then hold the WIFI switch to the right i.e. in the on position and then use the power switch to turn on the laptop as normal but keep the WIFI switch held on. You should see the little orange WIFI LED blink once and once the laptop is starting to boot up after the BIOS display then release the WIFI switch so it flips back to the left/off position.
The WIFI should be back to normal now and the rfkill list will show Hard blocked: no.