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Hi I've bought this laptop and immediately install archlinux. Now I've got this problem, keyboard backllight doesn't work on KDE ( but during installation it's works fine) the starnge thing is that if i take the laptop with my hands and recline it start to work!?
I've try to set /sys/devices/platform/sony-laptop/kbd_backlight and /sys/devices/platform/sony-laptop/kbd_backlight_timeout to 1 but nothing happen, and when i reboot they are set to the default values -1
Please Help me
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If reclining makes it work it sounds like it's going or something is rolling around (a screw?) in the laptop. Seems like it might be hardware not software that is the problem, but you should be able to fix the value of kbd_backlight_timeout as well. That part is software, but it maybe controlled by BIOS/Firmware, look there for a backlight on/off control. You didn't mention if it's a BIOS or UEFI firmware booting laptop, but whichever, look there for a control that will work though multiple reboots.
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I have Bios. I dont't think is an hardware problem because it's run perfect on windows and during the installetion as well. Can someone suggest me some other files that may controll the keyboard backlight.
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Any help?
On windows it works fine, if you need i'll give you some output but I don't know which
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