Currently, I am trying to change the brightness of my Ubuntu system. This is my first time using Ubuntu. I couldn't change the brightness using the fn key. This is because my keyboard don't have the fn key. So i found out through the online source that it is possible to change the brightness my modifying the value of the
acpi_video0/brightness file. I tried changing it. It seems that the value can be changed but in the screen has no effect. I have also tried changing commands in the GRUB file but its still the same. My Ubuntu system is too dim now. I need to increase it somehow.
*-display description: VGA compatible controller product: Intel Corporation vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 06 width: 64 bits clock: 33MHz capabilities: pciexpress msi pm vga_controller bus_master cap_list rom configuration: driver=i915_bpo latency=0 resources: irq:324 memory:de000000-deffffff memory:c0000000-cfffffff ioport:f000(size=64)