Difference between revisions of "PinePhone FAQ"

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==== How can I turn on the backlight? ====
==== How can I turn on the backlight? ====


When the brightness is too low, the backlight turns off completely. At which point this happens requires calibration. It also depends on whether the device is being charged or not, due to how the backlight is physically regulated. The backlight can be turned on by increasing the brightness. If the brightness is too low but non-zero, as can happen when using a gui slider, try connecting the phone to a charger.
When the brightness setting is too low, the backlight turns off completely. At which point this happens requires calibration. It also depends on whether the pinephone is connected to a charger or not, due to how the backlight is physically regulated. The backlight can be turned on by increasing the brightness setting. If the brightness setting is too low but non-zero, as can happen when using a gui slider, try connecting the phone to a charger.


On most systems the brightness level is an integer between 0 and 1000 and available at runtime in /sys/class/backlight/backlight/brightness and stored at shutdown and loaded at boot from /var/lib/systemd/backlight/platform-backlight:backlight:backlight by systemd-backlight. Changing the brightness can be done at runtime, for example over SSH, by executing as root <code>echo 500 > /sys/class/backlight/backlight/brightness</code>. The stored brightness can be modified using another system, by mounting at $mnt the root filesystem of the system you want to fix and executing <code>echo 500 > $mnt/var/lib/systemd/backlight/platform-backlight\:backlight\:backlight</code>.
On most systems the brightness setting is an integer between 0 and 1000 and available at runtime in /sys/class/backlight/backlight/brightness and stored at shutdown and loaded at boot from /var/lib/systemd/backlight/platform-backlight:backlight:backlight by systemd-backlight@backlight:backlight.service. Changing the brightness setting can be done at runtime, for example over SSH, by executing as root <code>echo 500 > /sys/class/backlight/backlight/brightness</code>. The stored brightness setting can be modified using another system, by mounting at $mnt the root filesystem of the system you want to fix and executing <code>echo 500 > $mnt/var/lib/systemd/backlight/platform-backlight\:backlight\:backlight</code>.


=== SMS ===
=== SMS ===