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Re: [Libreboot] libreboot first-impressions

From: Michał Masłowski
Subject: Re: [Libreboot] libreboot first-impressions
Date: Tue, 06 Jan 2015 22:04:54 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4 (gnu/linux)

> 1. Noise!
>    Annoying.I found a few workarounds for the problem at the project
>    wiki. I liked the powertop approach, but sadly it didn't work for
>    me.  A silly solution; I have mplayer playing my fav radio station
>    on another terminal (muted of-course)

A subset of what powertop suggests solves this for me, unless I connect
an USB device.  The processor.max_cstate=2 kernel argument might help in
more cases, at a cost in battery life.  I don't know any more proper

> 2. Runs Hot
>    It usually runs hot when I watch a movie or two. Not a big deal,
>    but it would be great if this can be improved.

This might be an issue with the cooling assembly or thermal paste.  Or
is it hotter than before flashing libreboot?

>    Are there any tricks of the trade that you folks can share? One
>    particular idea that I have in mind is disabling devices that I
>    don't use (card-controller, ethernet, bluetooth and so on). Is it as
>    simple as black-listing the respective modules?

Reduce backlight brightness?  See what energy usage powertop shows and
use it to e.g. disable unused devices?

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