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Minsc

Member

Registered: 2012-07-16

Posts: 95

Dell Inspiron 7567 - Gaming laptop. Keyboard backlight?

Hi Guys,

Laptop: Dell Inspiron 7567 - gaming model.

I have no idea where to start to get the keyboard backlight working. I looked around on the net and I've seen people say you can enable the 7200 series' backlight in the BIOS. I don't see that, nor do I have any idea how to get it working.

This is purely cosmetic and would be nice to have - but if anyone knows how to get it working, that would be awesome.

I can post sys stats or whatever is needed. I don't even know what to look for in dmesg.

Any pointers would be appreciated.

Thanks.

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,653

Re: Dell Inspiron 7567 - Gaming laptop. Keyboard backlight?

Do you have a directory /sys/class/leds ?  Anything in that directory look like it may have to do with keyboard backlights?,

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Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
The shortest way to ruin a country is to give power to demagogues.— Dionysius of Halicarnassus
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How to Ask Questions the Smart Way

Minsc

Member

Registered: 2012-07-16

Posts: 95

Re: Dell Inspiron 7567 - Gaming laptop. Keyboard backlight?

I do indeed!

jake@kronos ~ $ ls -la /sys/class/leds/ 
total 0
drwxr-xr-x  2 root root 0 Jun 24 04:07 .
drwxr-xr-x 61 root root 0 Jun 24 04:07 ..
lrwxrwxrwx  1 root root 0 Jun 24 04:08 input4::capslock -> ../../devices/platform/i8042/serio0/input/input4/input4::capslock
lrwxrwxrwx  1 root root 0 Jun 24 04:08 input4::numlock -> ../../devices/platform/i8042/serio0/input/input4/input4::numlock
lrwxrwxrwx  1 root root 0 Jun 24 04:08 input4::scrolllock -> ../../devices/platform/i8042/serio0/input/input4/input4::scrolllock
lrwxrwxrwx  1 root root 0 Jun 24 04:08 phy0-led -> ../../devices/pci0000:00/0000:00:1c.5/0000:03:00.0/leds/phy0-led

$ dmesg | grep phy0
[    3.508973] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'

Last edited by Minsc (2018-06-25 07:49:12)

Minsc

Member

Registered: 2012-07-16

Posts: 95

Re: Dell Inspiron 7567 - Gaming laptop. Keyboard backlight?

Just realising it, but none of the lights work. That includes caps and num (and the none existent scroll, which of course was probably banished during the 90s.)

Hm...

I'd love to know how to fix this!

Cheers guys.

Last edited by Minsc (2018-06-25 08:01:30)

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,653

Re: Dell Inspiron 7567 - Gaming laptop. Keyboard backlight?

Unfortunately, none of those are your keyboard backlight.
Off topic, you should be able to get the LEDs to come on with a command such as:

sudo bash -c "echo 1 > /sys/class/leds/input4\:\:capslock/brightness"

If '1' does not work,, try '255'

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Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
The shortest way to ruin a country is to give power to demagogues.— Dionysius of Halicarnassus
---
How to Ask Questions the Smart Way

Minsc

Member

Registered: 2012-07-16

Posts: 95

Re: Dell Inspiron 7567 - Gaming laptop. Keyboard backlight?

Hm. That sucks

I also tried echoing 1 & 255 to numlock/brightness but it also doesn't work....

Is this a kernel issue do you think?

Thanks for your help so far.