Difference between revisions of "Reactivating the Backlight"
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== Overview == | <languages/> | ||
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== Overview == <!--T:1--> | |||
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Some users - particularly those using laptops - are encountering a problem where the screen brightness is too dim upon replacing Microsoft Windows with a Linux distribution as their main operating system. This is because some unscrupulous hardware manufacturers have coded the BIOS to automatically disable the screen backlight if Windows is not detected running on the system. Fortunately, it is possible to fix this problem by entering a single command in the terminal. | Some users - particularly those using laptops - are encountering a problem where the screen brightness is too dim upon replacing Microsoft Windows with a Linux distribution as their main operating system. This is because some unscrupulous hardware manufacturers have coded the BIOS to automatically disable the screen backlight if Windows is not detected running on the system. Fortunately, it is possible to fix this problem by entering a single command in the terminal. | ||
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== Reactivating the Screen Backlight == <!--T:3--> | |||
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This problem can be easily fixed by ensuring that the GRUB bootloader re-activates the backlight. To do this, first open up your terminal, and enter the following command: | This problem can be easily fixed by ensuring that the GRUB bootloader re-activates the backlight. To do this, first open up your terminal, and enter the following command: | ||
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{{UserCmd|command= sudo sed "s/\(GRUB_CMDLINE_LINUX=\)\"\"/\1\"acpi_osi=Linux acpi_backlight=vendor\"/" /etc/default/grub -i}} | |||
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You will also have to enter your password to continue. Now enter the second and final command: | You will also have to enter your password to continue. Now enter the second and final command: | ||
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{{UserCmd|command= sudo update-grub}} | |||
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Once complete, close the terminal and re-boot your system for the changes to take permanent effect. | |||
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[[Category:Contents Page{{#translation:}}]] | |||
[[Category:Contents Page]] | |||
Latest revision as of 11:49, 21 March 2022
Overview
Some users - particularly those using laptops - are encountering a problem where the screen brightness is too dim upon replacing Microsoft Windows with a Linux distribution as their main operating system. This is because some unscrupulous hardware manufacturers have coded the BIOS to automatically disable the screen backlight if Windows is not detected running on the system. Fortunately, it is possible to fix this problem by entering a single command in the terminal.
Reactivating the Screen Backlight
This problem can be easily fixed by ensuring that the GRUB bootloader re-activates the backlight. To do this, first open up your terminal, and enter the following command:
user $ sudo sed "s/\(GRUB_CMDLINE_LINUX=\)\"\"/\1\"acpi_osi=Linux acpi_backlight=vendor\"/" /etc/default/grub -i
You will also have to enter your password to continue. Now enter the second and final command:
user $ sudo update-grub
Once complete, close the terminal and re-boot your system for the changes to take permanent effect.