brightness keys not working

ps.hpk001 July 2017

I installed fedora 20 on my hp laptop .One problem i face after installation .Brightness keys not working..pls any one knows hw to fix this problem pls help m
adeshagarwal02 July 2017

Try this sudo yum install xbacklight xbacklight -set choice here choice is yours 10,20,30 and so on 
ps.hpk001 July 2017

thanks
saurabh.hmr009 August 2017

try installing x backlight . Then go the the grub file and acpi_backlight=vendor in "GRUB_CMDLINE_LINUX=".
save and then again rebuild your grub .

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