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update the 3050 page to match current status 

this board was perfected some time ago now

Signed-off-by: Leah Rowe <info@minifree.org>
master
Leah Rowe 2024-12-05 21:41:02 +00:00
parent cc2ee3d7ca
commit 4d3e6640cb
1 changed files with 20 additions and 23 deletions
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43
site/docs/install/dell3050.md
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@ -74,35 +74,19 @@ software freedom in the future.
Issues
======
Before flashing, you must know that this board is still a work-in-progress. It
is using this patchset from the author, Mate Kukri:
<https://review.coreboot.org/c/coreboot/+/82053> (libreboot uses patch set 14)
Issues, as per Libreboot's testing, are as follows:
* PWM fan controls broken, so the system always run in a low-rpm state, even
under stress conditions, which could lead to overheating under stress.
To mitigate the PWM bug, simply cut the blue wire on the fan connector, and
cut the red wire but jump the cut (on red) with a 10ohm resistor or so; cutting
the blue one bypasses PWM, so the fan runs at full speed (very loud), and the
red wire powers it, so the resistor on the red wire will slow the fan down, but
leave it running faster than on idle. You can also cap the CPU speed however you
wish, via the `intel_pstate` driver.
An i7-6700k has been tested, delidded (thermal grizzly conductonaut under
the ihs) and arctic mx-6 paste on top (between ihs/cooler). On stress tests,
the CPU got just above 60c with the above 10ohm mod.
If you're using a 10ohm resistor on the fan power, make sure it's at least a 2W
one, since this is a very low-resistance fan (higher wattage).
This machine basically works flawlessly, as of the Libreboot 20241205 release.
All the initial bugs were fixed, e.g. PWM fan control works now. A very nice
machine, and inexpensive, plus very easy to set up for the average user. The
ideal Libreboot desktop.
Note that HDMI audio *does* work, but you have to select it in your audio
server e.g. pipewire. The `pavucontrol` utility in Linux (with pipewire) lets
you have a lot of control over audio I/O. Libreboot patches the board to add
a verb, so headphones should work.
Selection of audio devices and outputs is a bit idiosyncratic on this board.
Just play with pavucontrol for your setup and it should work fine.
Installation
============
@ -117,6 +101,16 @@ Libreboot's build system automatically downloads and processes these files if
you build Libreboot from source, but the same logic that it uses must be re-run
if you're using a release image.
Of particular interest, this board uses the [deguard](deguard.md) software,
to disable Intel Boot Guard. This means also that the ME firmware no longer
has functional cryptographic signature checking for most of it; you can
theoretically run whatever you want on the ME coprocessor.
Libre ME doesn't exist yet, but it's now possible. Example use-case for a
libre ME could include, for example, running an out-of-bound packet filter
on a secure network (with flash write protection, making it invincible to any
OS-based software attacks).
MAC address
-----------
@ -126,6 +120,9 @@ change. This means: there is no GbE region in the flash.
You can still use something like GNU MAC Changer to change your MAC address
from Linux if you want to.
This is great, because that's one less complexity to deal with during
installation.
Flash a ROM image (software)
-----------------