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09-10-2018

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Fn Keys and Audio Keys not working after updates.

2018-09-10, 2:20 AM

I am running a P70 20ERCTO1WW (Win 7 Pro SP1) sometime in the past month or so I have had an issue with the function row. (I ran a mix of Windows and Lenovo updates about that time.)

 

Symptoms:
Mute key does not illuminate the in key LED; but the system tray volume mixer does show mute and unmute.
Mic Key does not illuminate the in key LED.

Fn+F1 will mute the speakers and illuminate the LED in the Mute key across the keyboard.
Fn+F3 will increase volume and unmute a Fn+F1 Mute.
Vol+ Key will increase volume but not unmute a Fn+F1 Mute.

The in key LED were working on the Mute key and Mic key.


Are the Fn+F1-F4 are operating on a lower system or hardware level?
Are the Mute, Volume -/+, Mic keys on a higher OS level?

Fn+F5&F6 (display brightness) are working as expected.

Fn+F7 (Projector) no response
WinKey+X functions as expected.
Fn+F8 (Radio) no response
The Bluetooth radio with the Fn Key during the period of updates.
This is a problem because I haven't been able to re-enable the Bluetooth radio.

Fn+F9 (Config) no response
Fn+F10 (Search) no response
Fn+F11 (Task Switcher) no response
Fn+F12 (Task Switcher) no response

The missing LED makes it more difficult to maintain proper sound discipline.

Lenovo Update and Windows Update are current.

 

Any ideas?

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2149 Posts

07-22-2010

United States of America

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Re: Fn Keys and Audio Keys not working after updates.

2018-09-10, 2:30 AM

You probably updated the power management driver.  Its affecting a lot of people.  Its affecting OSD and Fn keys.  See below post.  The solution is to ROLL back the power management driver. 

 

https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T/Latest-Power-Management-Driver-Conflicts-with-Lenovo-OSD/m-p/4191883#M127794

 


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 I do not work for, nor do I speak for Lenovo. I will not respond to unsolicited private messages. Questions belong in the forum so it may   help other forum members as well.
T14s Gen 2, T14, T490, TP 25 Retro, X1 Yoga 3rd Gen, W510 850 EVO, A30p
 Retired 385D, A20p, A21p


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2149 Posts

07-22-2010

United States of America

10169 Signins

171957 Page Views

  • Posts: 2149
  • Registered: ‎07-22-2010
  • Location: United States of America
  • Views: 171957
  • Message 2 of 6

Re: Fn Keys and Audio Keys not working after updates.

2018-09-10, 2:30 AM

You probably updated the power management driver.  Its affecting a lot of people.  Its affecting OSD and Fn keys.  See below post.  The solution is to ROLL back the power management driver. 

 

https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T/Latest-Power-Management-Driver-Conflicts-with-Lenovo-OSD/m-p/4191883#M127794

 


 If a post answers your question, please mark it as an”Accepted Solution“!
 If a post helps you, please click the star to give it a "Kudo"!


 I do not work for, nor do I speak for Lenovo. I will not respond to unsolicited private messages. Questions belong in the forum so it may   help other forum members as well.
T14s Gen 2, T14, T490, TP 25 Retro, X1 Yoga 3rd Gen, W510 850 EVO, A30p
 Retired 385D, A20p, A21p


Using Browser Search to find your answers in Lenovo and Moto Community

0 person found this solution to be helpful.

This helped me too

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3 Posts

09-10-2018

United States of America

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  • Message 3 of 6

Re: Fn Keys and Audio Keys not working after updates.

2018-09-10, 2:52 AM
Thank you for your quick and accurate response.
It worked, Device Manager > System Devices > Lenovo PM Driver > Driver > Roll Back Driver > Restart.

I saw that post but thought that was a five year old post / issue and disregarded it as different era.
Thank you.
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603 Posts

02-24-2014

Afghanistan

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Re: Fn Keys and Audio Keys not working after updates.

2019-11-20, 6:12 AM
Very disconcerting,and scary when some software can change BIOS settings set up by the user. Maybe a case of user control.... what else will it do? Enable microphone or camera for surveillance?
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7 Posts

06-01-2019

United Kingdom of Great Britain and Northern Ireland

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Re:Fn Keys and Audio Keys not working after updates.

2020-06-17, 9:10 AM

I cannot roll back the driver. 'Rollback' is greyed out.  The computer was OK for WiFi access under Windows 10 version 1909 but  after updating to version 2004 it is stuck in airplane mode. I've tried all teh 'fixes' I can find on the net, without success. 

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7 Posts

06-01-2019

United Kingdom of Great Britain and Northern Ireland

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  • Message 6 of 6

Re:Fn Keys and Audio Keys not working after updates.

2020-06-17, 9:12 AM

I should have added that I rolled back to Windows 10 version 1909 but WiFi is still disabled and unfixable.

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