Merge pull request 'hp8560w: gpu updates' (#108) from Riku_V/lbwww:master into master

Reviewed-on: https://codeberg.org/libreboot/lbwww/pulls/108

site/docs/hardware/hp8560w.md

@@ -20,7 +20,7 @@ OR YOU MIGHT BRICK YOUR MACHINE: [SAFETY PRECAUTIONS](../../news/safety.md)**
 | **Chipset**                | Intel QM67                                     |
 | **CPU**                    | Intel Sandy Bridge (socketed)                  |
 | **Graphics**               | MXM-A (3.0), socketed                          |
-| **Display**                | 15" 1600x900 or 1920x1080 TFT                  |
+| **Display**                | 15.6" 1600x900 or 1920x1080 LCD                |
 | **Memory**                 | Two or four slots, max 8GB/slot
                                (16GB or 32GB), DDR3/SODIMM                    |
 | **Architecture**           | x86_64                                         |
@@ -60,11 +60,32 @@ Introduction
 **Unavailable in Libreboot 20240126 or earlier. You must [compile from
 source](../build/), or use a release newer than 20240126.**
 
-This is a beastly 15" Sandy Bridge platform from HP. It has upgradeable
+This is a beastly 15" Sandy Bridge mobile workstation from HP.
-graphics in the MXM-A 3.0. Only the Quadro 2000M that shipped with some
+
-of these laptops is tested with Libreboot so far. 1000M is expected to
+GPU
-work as well. The very newest modules might not work, because the internal
+---
-panel is an LVDS one. Newest GPUs supposedly only support eDP panels.
+
+This laptop has upgradeable GPU: it has a socketed MXM-A 3.0 card. So far,
+only Quadro 1000M and 2000M (which shipped with the laptop originally) have
+been tested with Libreboot.
+
+These laptops shipped with eDP and LVDS panels. If you choose to upgrade the
+graphics card, make sure it is compatible with the panel you have. Use the
+following command to check:
+
+	xrandr
+
+Or if using Wayland:
+
+	wlr-randr
+
+If you have "LVDS-1 connected", your GPU upgrade needs to support LVDS.
+According to [this forum thread](https://forums.macrumors.com/threads/2011-imac-graphics-card-upgrade.1596614/),
+AMD's 1st gen GCN cards are the newest and most powerful to support LVDS.
+If you have an eDP panel, you should be able to use newer cards than that.
+
+As long as the card has an onboard VBIOS, Libreboot will execute it and
+everything *should* work. **However, this is currently untested.**
 
 Build ROM image from source
 ---------------------------