DELL-Cares
Moderator
Moderator

Re: Precision 7730 -- brightness adjustment stops working in latest BIOS

Hi,

 

Prajwal here from Dell community.

I'm following up with you to check if you are available.

Please get back to us at your convenience so that we can further assist you.

 

Regards,

 

Prajwal


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#IWork4Dell
To help us troubleshoot, click our Dell-Cares name and send us a private message with your Dell PC or Monitor Service Tag number

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_Artur_
2 Bronze

Re: Precision 7730 -- brightness adjustment stops working in latest BIOS

Hello,

I'm not sure what assistance are you talking about, Prajwal? As delta78561 user explained, brightness control ceased to work, because you've made changes to DSDT table in BIOS version 1.11 that prevented passing keypresses to operating system. More details you'll find in his message (posted in this thread at 07-11-2020 06:58 AM). He managed to fix it by modifying the DSDT - most users didn't heard about DSDT tables, not even mentioning fixing it on their own.


If you are talking about fixing DSDT table for users less technically advanced than delta78561, then such assistance would be most welcome.

DELL-Cares
Moderator
Moderator

Re: Precision 7730 -- brightness adjustment stops working in latest BIOS

Hi,

 

Prajwal here from Dell community.

I'm following up with you to check if you are available.

Please get back to us at your convenience so that we can further assist you.

 

Regards,

 

Prajwal


Social Media Support

#IWork4Dell
To help us troubleshoot, click our Dell-Cares name and send us a private message with your Dell PC or Monitor Service Tag number

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pvdputte
2 Bronze

Re: Precision 7730 -- brightness adjustment stops working in latest BIOS

I can tell DELL Cares!

ricepower
2 Bronze

Re: Precision 7730 -- brightness adjustment stops working in latest BIOS

Any update on the permanent fix of the subject issue?

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pvdputte
2 Bronze

Re: Precision 7730 -- brightness adjustment stops working in latest BIOS

I upgraded to 1.14 for giggles and of course the brightness keys won't work. I was now waiting a while to see if this laptop failed to resume from syspend while on battery. I took the risk three times but until now it didn't crash. So that's something. Could be coincidence. OTOH I just noticed that closing the lid of the laptop no longer makes it suspend. It just keeps running with the screen on. I'm going back to BIOS 1.10. Again.
pvdputte
2 Bronze

Re: Precision 7730 -- brightness adjustment stops working in latest BIOS

Aaaah... what a relief.

Handle 0x0000, DMI type 0, 26 bytes
BIOS Information
Vendor: Dell Inc.
Version: 1.10.1
Release Date: 07/29/2019

I have hotkeys that work!

Closing the lid actually suspends my system!

And if I open it, it resumes solidly.

If it weren't for Ubuntu software center nagging me that my BIOS is outdated, I probably wouldn't ever consider upgrading it again.

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lahire149
2 Bronze

I jRe: Precision 7730 -- brightness adjustment stops working in latest BIOS

Just updated my 7730 BIOS to the latest revision and it also broke my brightness keys. When will Dell actually fix this issue and use the notes the other people put in this thread?

pvdputte
2 Bronze

Re: I jRe: Precision 7730 -- brightness adjustment stops working in latest BIOS

Honestly, I do not expect a fix anymore. Nothing has moved in 18 months. It's a pity because otherwise it's a fine machine.