Jesse, Jesse Gibbons wrote:
My Librem 13 laptop battery lasts much longer with a lower screen brightness. When it runs gnome on guix (and I haven't tried any other de) I have to turn down the brightness every time. This is not so withmy other partition running PureOS. Is there a way to configure a default screen brightness in guix/gnome?
Guix doesn't have a notion of ‘default’ screen brightness because it doesn't know anything about brightness.
My guess is that PureOS uses systemd; systemd provides a backlight.service that reads the backlight brightness at shutdown, stores it to disc, and writes that value back to the device at next start-up.
It would be a relatively trivial service to add, but that hasn't been done yet :-)
We do already provide a simple, script-friendly abstraction tool¹: $ guix install light $ sudo light -S 50 # percentage It can even run setuid. Kind regards, T G-R[1]: As opposed to manually reading and writing `find /sys -path *backlight*brightness*`.
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