Can't change brightness on Toshiba l755 laptop
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albert
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Published on 2012-09-30T15:16:04Z
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2012/09/30
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I have a Toshiba l755 laptop, and I installed 12.04 64bit on it. The default brightness of the laptop is set to maximum value, and I can't change it.
If I go to Configuration ? Brightness, the brightness doesn't change and neither does pressing the function keys.
I tried changing some parameters of grub file, setting GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=Linux acpi_backlight=vendor"
.
When changing the brightness from configuration, the value of /sys/class/backlight/toshiba/brightess
changes, but screen remains the same. If I use the key functions, it changes the "actual_brightness" files. I don't know what else can I do, any suggestions?
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