Intel Sandybridge Video,Linux and the latest kernel drivers

[mark9950]

Issue, brightness levels going to max between reboots,Need to know how to make the system stay the same level between reboots,no going back to max.I know the newer kernels above 15 fix the issue somewhat of being able to change my laptop brightness levels using my keyboard keys ,but not this issue of rebooting at a brightness level of 20 and not 100.Get it.

[Dave B]

Hi mark9950,

Imagine by now you will have found a solution, but just in case.

Open a Terminal and enter:

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sudo gedit /etc/rc.local

After gedit opens:
Directly above exit 0, add the following commands... (replacing "@" with desired brightness value, for example, some systems have a range of 0-7)

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sleep 2
echo @ > /sys/class/backlight/acpi_video0/brightness

Final result will look something like this:

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sleep 2
echo 5 > /sys/class/backlight/acpi_video0/brightness
exit 0

David

PS: If Mint is installed on a HDD rather than SSD, you may need to increase the sleep value to 5