Set Battery thresholds x230

[Franz]

When a laptop is always connected to power, e very good behavior to strongly prolong battery life is to avoid charging it to 100% and limiting it to lower threshold, perhaps 80%.

Thinkpads have this facility on linux. But the Fedora command for that is:

to first install tlp package which works with

sudo qubes-dom0-update tlp

then, it is required to install packages that are not availble from the official Fedora repositories, instead you need RPM Fusion and TLP repositories in a root shell.

The Fedora command is the following:

dnf install kernel-devel akmod-acpi_call

Is there a way to get this working without compromising security?

Best

[dhorf-hfre...@hashmail.org]

On Wed, Mar 18, 2020 at 11:56:31AM -0300, Franz wrote:
> When a laptop is always connected to power, e very good behavior to
> strongly prolong battery life is to avoid charging it to 100% and limiting
> it to lower threshold, perhaps 80%.

i am using a (perl) script for doing this on my qubes chromebooks.
trivial if you have ways to a) get the current battery level and
b) control the charger (charge/idle/discharge).

> The Fedora command is the following:
> dnf install kernel-devel akmod-acpi_call

mixing random custom kernel modules with a qubes kernel is unlikely
to work. at all. even if you figure out how to install the pkgs.

depending on whats in these pkgs (does it have a Kconfig and can be
built out of tree?) and what parts of it you actualy need rolling
your own kernel-latest pkg may work.

and even if you have a working kernel+module combo it simply may not
work under xen. (depends on what kind of interfaces it is using)

> Is there a way to get this working without compromising security?

depends on what you mean by "security" there.
did you review the code already?

[Franz]

On Wed, Mar 18, 2020 at 1:08 PM <dhorf-hfre...@hashmail.org> wrote:

On Wed, Mar 18, 2020 at 11:56:31AM -0300, Franz wrote:
> When a laptop is always connected to power, e very good behavior to
> strongly prolong battery life is to avoid charging it to 100% and limiting
> it to lower threshold, perhaps 80%.

i am using a (perl) script for doing this on my qubes chromebooks.
trivial if you have ways to a) get the current battery level and
b) control the charger (charge/idle/discharge).


> The Fedora command is the following:
> dnf install kernel-devel akmod-acpi_call

mixing random custom kernel modules with a qubes kernel is unlikely
to work. at all. even if you figure out how to install the pkgs.

Thanks for replying, now I understand it is too difficult for me. I have another x230 with arch and it worked immediately, so supposed Qubes only required some trick, but now understand it is far beyond my capabilities.

Many thanks