07-18-2014, 08:55 AM
Hi Scott
As you say its a old Problem .
I understand the developers time is limited and this problem may not be considered important and so does not get fixed . The downside it leads to a lot of frustrated users wasting time and effort trying to fix it themselves .
This can have a negative impact on the take up of Ubutu and its derivatives because they are deemed not fit for purpose for the non tech user who wants it to work out of the box .
I found this --- but Lite does not have Gedit installed . Should I be able to use the "Simple Text Editor " ad how do I get the equivalent of( sudo gedit /etc/default/grub)
Well my friends have been facing brightness problem in Ubuntu 12.04 Precise Pangolin. And every one were facing and asking me to help me out with it. So, I viewed all over the Internet and helped them out. I helped with it myself too in Dell XPS 13. And for friends Acer Aspire, HP Pavilion DV6. So it might work on most of all the PCs.
My friends were just trying the xrand solution that just decreases the Contrast which had no effect on the power consumption. So, this solution was the most to be kept. I am feeling quite when the Fn(Function key) and the Brightness Up and Down are working great. You can follow up the procedure that I have kept in an easy steps.
Open terminal ( Ctrl+Alt+T ) and type:
sudo gedit /etc/default/grub
You will find this line in the new opened window:
1
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
Change it to:
1
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"
Save and close the window and type this in the terminal:
sudo update-grub
This will update your grub and while rebooting your PC, it will set an extra parameter on the grub menu during boot. This problem might have occur on due to the upgrade on kernel.
Enjoy the power saving system.
As you say its a old Problem .
I understand the developers time is limited and this problem may not be considered important and so does not get fixed . The downside it leads to a lot of frustrated users wasting time and effort trying to fix it themselves .
This can have a negative impact on the take up of Ubutu and its derivatives because they are deemed not fit for purpose for the non tech user who wants it to work out of the box .
I found this --- but Lite does not have Gedit installed . Should I be able to use the "Simple Text Editor " ad how do I get the equivalent of( sudo gedit /etc/default/grub)
Well my friends have been facing brightness problem in Ubuntu 12.04 Precise Pangolin. And every one were facing and asking me to help me out with it. So, I viewed all over the Internet and helped them out. I helped with it myself too in Dell XPS 13. And for friends Acer Aspire, HP Pavilion DV6. So it might work on most of all the PCs.
My friends were just trying the xrand solution that just decreases the Contrast which had no effect on the power consumption. So, this solution was the most to be kept. I am feeling quite when the Fn(Function key) and the Brightness Up and Down are working great. You can follow up the procedure that I have kept in an easy steps.
Open terminal ( Ctrl+Alt+T ) and type:
sudo gedit /etc/default/grub
You will find this line in the new opened window:
1
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
Change it to:
1
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"
Save and close the window and type this in the terminal:
sudo update-grub
This will update your grub and while rebooting your PC, it will set an extra parameter on the grub menu during boot. This problem might have occur on due to the upgrade on kernel.
Enjoy the power saving system.
I Learn something new Every Day !
An "example" is worth a 1000 words
An "example" is worth a 1000 words