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backlit keyboard and linux


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#1 graywizardlinux

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Posted 26 December 2017 - 03:18 PM

does the backlight on the keyboard work when installing linux on a laptop?  or is there some application in windows (or mac) that is needed to get it to work?  is it just hardware wired so it will work when installing bodhi?





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#2 Rongxiang LIN

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Posted 26 December 2017 - 03:50 PM

Not fully proven on my end, but in the case of office laptops I am supporting, the backlights on some keyboards e.g. Acer laptops come on the moment the power button is pushed. From how the questions above posed, my approximate take is that there could be some laptops which have backlights that cannot be functional when a third party OS is instead, but what I observe is that operating system e.g. software control or hardware driver is not always required in turning on laptop keyboard backlights. It's more of an electronics issue instead of software programming, just a guess.  :) 


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#3 graywizardlinux

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Posted 26 December 2017 - 04:11 PM

thanks - but that is what ia am guessing and asking.  I would love if it would work if i bought one with the lit keys.



#4 graywizardlinux

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Posted 27 December 2017 - 12:23 PM

any more clues as to how this works please?  thanks!



#5 gohlip

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Posted 28 December 2017 - 04:33 AM

I don't have this issue so might not work/applicable to you.

fitst check if you have vbetool installed

$ apt search vbetool

If you have,

$ vbetool dpms on

If it is not vbetool... try adding

acpi_backlight=video

to the kernel parameter of your grub linux line.

 

Good luck.

 

ps: I cannot go further if this doesn't work.

Others have to help.

 

 

[edit] - one of these .... I just used 'video'; try each one.

acpi_backlight=video
acpi_backlight=vendor
acpi_backlight=native

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#6 graywizardlinux

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Posted 28 December 2017 - 10:58 AM

Thanks - i follow part of it.  i also did not get the laptop yet.  that is why i am asking before i go any further.






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