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perdomwx
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PostPosted: Sun Apr 01, 2018 4:44 am    Post subject: [Solved] KDE Laptop Keyboard Backlight Reply with quote

This notebook (Dell XPS 13) formerly had Arch on it and the latest KDE. What I liked about it is that KDE battery applet had control over the keyboard backlight in the latest version.

I recently installed Gentoo on it with the latest KDE (stable version) and the battery applet doesn't control the keyboard backlight.

Is there a way to enable this? Any ideas would be much appreciated.

Thanks.


Last edited by perdomwx on Sun Apr 01, 2018 6:05 pm; edited 2 times in total
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fedeliallalinea
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PostPosted: Sun Apr 01, 2018 7:20 am    Post subject: Reply with quote

But the physical key work on keyboard?
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perdomwx
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PostPosted: Sun Apr 01, 2018 1:55 pm    Post subject: Reply with quote

fedeliallalinea wrote:
But the physical key work on keyboard?

Yes the keys work.
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fedeliallalinea
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PostPosted: Sun Apr 01, 2018 3:32 pm    Post subject: Reply with quote

perdomwx wrote:
fedeliallalinea wrote:
But the physical key work on keyboard?

Yes the keys work.

You have configured CONFIG_DELL_SMBIOS and CONFIG_DELL_SMBIOS_WMI in your kernel?
Code:
$ grep CONFIG_DELL_SMBIOS /usr/src/linux/.config
CONFIG_DELL_SMBIOS=m
CONFIG_DELL_SMBIOS_WMI=m
# CONFIG_DELL_SMBIOS_SMM is not set

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perdomwx
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PostPosted: Sun Apr 01, 2018 4:52 pm    Post subject: Reply with quote

fedeliallalinea wrote:
perdomwx wrote:
fedeliallalinea wrote:
But the physical key work on keyboard?

Yes the keys work.

You have configured CONFIG_DELL_SMBIOS and CONFIG_DELL_SMBIOS_WMI in your kernel?
Code:
$ grep CONFIG_DELL_SMBIOS /usr/src/linux/.config
CONFIG_DELL_SMBIOS=m
CONFIG_DELL_SMBIOS_WMI=m
# CONFIG_DELL_SMBIOS_SMM is not set


No I haven't. Although, I don't have those options present in the config file. I'm using kernel 4.9.76-gentoo-r1.

EDIT: Nevermind, I found the options after enabling CONFIG_DCDBAS and CONFIG_ACPI_WMI. Enabling them now
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fedeliallalinea
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PostPosted: Sun Apr 01, 2018 5:04 pm    Post subject: Reply with quote

if not work try to change brightness through applet and see error returned in dmesg
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PostPosted: Sun Apr 01, 2018 5:47 pm    Post subject: Reply with quote

The options did not seem to enable the control. How can I change the brightness through the applet if I'm only able to change it via the button?

EDIT: I figured out I had to enable the CONFIG_DELL_LAPTOP option. To enable the control. Now it works thanks
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