feat(deck): Support 32GB RAM modded Steam Decks with double the maximum VRAM.

Author: KyleGospo

README.md

@@ -82,6 +82,7 @@ Variant designed for usage as an alternative to SteamOS on the Steam Deck, avail
     - Service for low-risk undervolting of the Steam Deck via [RyzenAdj](https://github.com/FlyGoat/RyzenAdj), see `ryzenadj.service` and `/etc/default/ryzenadj`.
     - Service for limiting the max charge level of the battery, see `batterylimit.service` and `/etc/default/batterylimit`. <sup><sub>(Works even when the device is off)</sub></sup>
     - Built in support for display overclocking. For example, add `GAMESCOPE_OVERRIDE_REFRESH_RATE=40,70` to `/etc/environment`.
+    - 32GB RAM mod your Steam Deck? Enjoy double the maximum VRAM amount, automatically applied. <sup><sub>(Can you share your soldering skills?)</sub></sup>
 
 **For new installs ISOs can be downloaded from our releases page [here](https://github.com/ublue-os/bazzite/releases).**
 

system_files/desktop/shared/usr/bin/bazzite-hardware-setup

@@ -32,7 +32,12 @@ if [[ ":Jupiter:" =~ ":$SYS_ID:"  ]]; then
   fi
 
   if [[ ! $KARGS =~ "amdgpu.gttsize" ]]; then
-    NEEDED_KARGS="$NEEDED_KARGS --append=amdgpu.gttsize=8128"
+    if [[ "$(awk '/MemTotal/{print $(NF-1)}' /proc/meminfo)" = "31664740" ]]; then
+      echo "32GB Steam Deck detected"
+      NEEDED_KARGS="$NEEDED_KARGS --append=amdgpu.gttsize=16256"
+    else
+      NEEDED_KARGS="$NEEDED_KARGS --append=amdgpu.gttsize=8128"
+    fi
   fi
 
   if [[ ! $KARGS =~ "spi_amd.speed_dev" ]]; then