File site/docs/install/dell3050.md changed (mode: 100644) (index b01d0ac..8c9360f) |
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software freedom in the future. |
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Issues |
Issues |
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Before flashing, you must know that this board is still a work-in-progress. It |
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is using this patchset from the author, Mate Kukri: |
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<https://review.coreboot.org/c/coreboot/+/82053> (libreboot uses patch set 14) |
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Issues, as per Libreboot's testing, are as follows: |
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* PWM fan controls broken, so the system always run in a low-rpm state, even |
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under stress conditions, which could lead to overheating under stress. |
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To mitigate the PWM bug, simply cut the blue wire on the fan connector, and |
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cut the red wire but jump the cut (on red) with a 10ohm resistor or so; cutting |
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the blue one bypasses PWM, so the fan runs at full speed (very loud), and the |
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red wire powers it, so the resistor on the red wire will slow the fan down, but |
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leave it running faster than on idle. You can also cap the CPU speed however you |
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wish, via the `intel_pstate` driver. |
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An i7-6700k has been tested, delidded (thermal grizzly conductonaut under |
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the ihs) and arctic mx-6 paste on top (between ihs/cooler). On stress tests, |
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the CPU got just above 60c with the above 10ohm mod. |
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If you're using a 10ohm resistor on the fan power, make sure it's at least a 2W |
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one, since this is a very low-resistance fan (higher wattage). |
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This machine basically works flawlessly, as of the Libreboot 20241205 release. |
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All the initial bugs were fixed, e.g. PWM fan control works now. A very nice |
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machine, and inexpensive, plus very easy to set up for the average user. The |
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ideal Libreboot desktop. |
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Note that HDMI audio *does* work, but you have to select it in your audio |
Note that HDMI audio *does* work, but you have to select it in your audio |
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server e.g. pipewire. The `pavucontrol` utility in Linux (with pipewire) lets |
server e.g. pipewire. The `pavucontrol` utility in Linux (with pipewire) lets |
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you have a lot of control over audio I/O. Libreboot patches the board to add |
you have a lot of control over audio I/O. Libreboot patches the board to add |
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a verb, so headphones should work. |
a verb, so headphones should work. |
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Selection of audio devices and outputs is a bit idiosyncratic on this board. |
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Just play with pavucontrol for your setup and it should work fine. |
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Installation |
Installation |
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============ |
============ |
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Libreboot's build system automatically downloads and processes these files if |
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you build Libreboot from source, but the same logic that it uses must be re-run |
you build Libreboot from source, but the same logic that it uses must be re-run |
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if you're using a release image. |
if you're using a release image. |
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Of particular interest, this board uses the [deguard](deguard.md) software, |
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to disable Intel Boot Guard. This means also that the ME firmware no longer |
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has functional cryptographic signature checking for most of it; you can |
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theoretically run whatever you want on the ME coprocessor. |
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Libre ME doesn't exist yet, but it's now possible. Example use-case for a |
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libre ME could include, for example, running an out-of-bound packet filter |
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on a secure network (with flash write protection, making it invincible to any |
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OS-based software attacks). |
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MAC address |
MAC address |
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----------- |
----------- |
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change. This means: there is no GbE region in the flash. |
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You can still use something like GNU MAC Changer to change your MAC address |
You can still use something like GNU MAC Changer to change your MAC address |
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from Linux if you want to. |
from Linux if you want to. |
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This is great, because that's one less complexity to deal with during |
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installation. |
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Flash a ROM image (software) |
Flash a ROM image (software) |
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