Question

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Grub can't be saved after modification

rated 0 times [ 0] [ 0] / answers: 1 / hits: 6136 / 2 Years ago, tue, march 15, 2022, 5:04:02

I have Ubuntu 14.04 32 bit machine on my lenovo g580. Default brightness keys are not working and can't decrease brightness in settings also. The brightness has been fixed at maximum. I followed few similar questions and modified grub document in /etc/default/grub, but I'm not being able to save this file after modification. Even though I have logged in as admin.It shows "You do not have the necessary permission to save the file", when I tried "save as" in the same location with the same name.
What should I do to decrease brightness? Please help.

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rofity

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Location: Albania

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1 Year ago

answered 2 Years ago njuash · Accepted Answer

Try this:

Open the Terminal app (Ctrl+Alt+T)

Type gksudo gedit

Type your password when asked for it (it will not show nothing, even asterisks) and press Enter

Text editor will open up

Then select Open and open the file to edit

Edit the file

Save the file