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Author Topic: Fn key wifi hard switch functionality lost [solved]  (Read 1028 times)

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Offline hofy

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Fn key wifi hard switch functionality lost [solved]
« on: February 14, 2018, 10:14:29 am »
Hello there,

I seem to have lost the Fn key wifi hard switch functionality. I can still turn it off/on by clicking on the applet, and ticking/unticking Wifi. Still, the key shortcut was handy. Any way to bring it back? I'm positive it worked just until a while ago. An update messed it up maybe? Thanks for advice :)

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hofy@hofy-EasyNote-TV11CM ~ $ inxi -Fz
System:    Host: hofy-EasyNote-TV11CM Kernel: 4.13.0-32-generic x86_64 (64 bit)
           Desktop: N/A Distro: Peppermint Eight
Machine:   System: Packard Bell product: EasyNote TV11CM v: V2.04
           Mobo: Packard Bell model: VG50_CM
           Bios: Packard Bell v: V2.04 date: 09/17/2012
CPU:       Dual core AMD A6-4400M APU with Radeon HD Graphics (-MCP-) cache: 2048 KB
           clock speeds: max: 2700 MHz 1: 1700 MHz 2: 1700 MHz
Graphics:  Card: Advanced Micro Devices [AMD/ATI] Trinity [Radeon HD 7520G]
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Audio:     Card-1 Advanced Micro Devices [AMD] FCH Azalia Controller
           driver: snd_hda_intel
           Card-2 Advanced Micro Devices [AMD/ATI] Trinity HDMI Audio Controller
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Network:   Card-1: Qualcomm Atheros AR8151 v2.0 Gigabit Ethernet driver: atl1c
           IF: enp1s0 state: down mac: <filter>
           Card-2: Broadcom BCM4313 802.11bgn Wireless Network Adapter
           driver: bcma-pci-bridge
           IF: wlp2s0b1 state: down mac: <filter>
           Card-3: Atheros AR9271 802.11n driver: ath9k_htc
           IF: wlxf4f26d15ea33 state: N/A mac: N/A
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RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
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« Last Edit: January 08, 2019, 06:46:21 am by hofy »

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Re: Fn key wifi hard switch functionality lost
« Reply #1 on: February 14, 2018, 11:25:34 am »
If you used to press say Fn+F3 .. does now just pressing F3 on its own toggle wireless on/off ?

This is much more likely to be a hardware or BIOS issue because those special keys are likely not controlled by the OS .. ie. they're independent of the OS, so you can toggle them even before an IS is loaded.

In the BIOS there's an option to require the use of the Fn key or not .. maybe toggle that to where you don't require the Fn key, save the BIOS settings and exit the BIOS .. then go back in and change it back, save and exit again.
« Last Edit: February 14, 2018, 11:30:30 am by PCNetSpec »
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Offline hofy

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Re: Fn key wifi hard switch functionality lost
« Reply #2 on: February 18, 2018, 10:42:09 am »
I can tell you it is OS dependent as I have also Windowz in a dualboot setup and the Fn+f3 key works there normally. Also I have another netbook where I installed peppermint in a dualboot setup with windows, but I couldn't turn the wifi off at all in P7, whereas under Windowz it worked no problem.

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Re: Fn key wifi hard switch functionality lost
« Reply #3 on: February 18, 2018, 12:51:28 pm »
If it worked until recently, have you tried booting an earlier kernel ?
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Re: Fn key wifi hard switch functionality lost
« Reply #4 on: February 19, 2018, 01:12:17 pm »
Tried now, earlier kernel works. So it's the new one.

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Re: Fn key wifi hard switch functionality lost
« Reply #5 on: February 19, 2018, 01:14:25 pm »
which kernel does it work in ?
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Offline hofy

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Re: Fn key wifi hard switch functionality lost
« Reply #6 on: February 20, 2018, 04:53:17 am »
4.10 worked. 4.13 doesn't.

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Re: Fn key wifi hard switch functionality lost
« Reply #7 on: February 20, 2018, 08:51:40 am »
Well your options then are to either:-

a) Set the 4.10 kernel as the default .. bearing in mind 4.10 is NOT receiving the Meltdown/Spectre patches (or any other updates)

b) Live with it

c) See if a more recent kernel works .. taking care to check it's been patched against Meltdown/Spectre.

d) Revert the HWE changes, thereby downgrading to the 4.4 kernel series.
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Offline hofy

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Re: Fn key wifi hard switch functionality lost
« Reply #8 on: January 08, 2019, 06:45:12 am »
I should add the solution I employed eventually:

e) map new keyboard shortcuts with commands
Code: [Select]
rfkill block #interfacenumber
Code: [Select]
rfkill unblock #interfacenumber