theupriser/steamify-cachyos
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feat: NVIDIA modules in the initramfs only while every kernel has them, decided again by a pacman hook at every kernel change

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theupriser committed 2026-10-01 14:42:06 +02:00
1 parent 68d28b95ed
commit 30b315e678
7 files changed
+103 -23
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lib/nvidia.sh
+22 -15
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@@ -9,6 +9,9 @@
NVIDIA_PARAMS="nvidia-drm.modeset=1 nvidia-drm.fbdev=1"
NVIDIA_INITRAMFS_CONF=/etc/mkinitcpio.conf.d/90-steamify-nvidia.conf
# The script and pacman hook that keep the initramfs file right at every kernel change.
NVIDIA_SCRIPT=${NVIDIA_SCRIPT:-/usr/local/libexec/steamify-nvidia-initramfs}
NVIDIA_HOOK=${NVIDIA_HOOK:-/etc/pacman.d/hooks/85-steamify-nvidia-initramfs.hook}
# The DRM devices in sysfs; the tests point this at a fake tree.
NVIDIA_DRM_DIR=${NVIDIA_DRM_DIR:-/sys/class/drm}
@@ -46,16 +49,14 @@ nvidia_initramfs_ok() {
}
nvidia_modules_everywhere() {
# 0 when every installed kernel has the nvidia_drm module: mkinitcpio fails
# on a MODULES entry a kernel lacks, and limine-mkinitcpio then skips that
# kernel's initramfs and boot entry, so the parameters never reach it.
local k found=0
for k in "${NVIDIA_MODULES_DIR:-/usr/lib/modules}"/*/; do
[[ -f "$k/pkgbase" || -d "$k/kernel" || -d "$k/updates" || -d "$k/extramodules" ]] || continue
find "$k" -name 'nvidia-drm.ko*' -print -quit 2>/dev/null | grep -q . || return 1
found=1
done
[[ $found == 1 ]]
# 0 when every installed kernel has the nvidia_drm module (the script's own check).
patch_file steamify-nvidia-initramfs.sh | NVIDIA_MODULES_DIR="${NVIDIA_MODULES_DIR:-/usr/lib/modules}" bash -s check
}
nvidia_hook_install() {
patch_file steamify-nvidia-initramfs.sh | sudo install -Dm755 /dev/stdin "$NVIDIA_SCRIPT" &&
patch_file steamify-nvidia-initramfs.hook | fill SCRIPT="$NVIDIA_SCRIPT" |
sudo install -Dm644 /dev/stdin "$NVIDIA_HOOK"
}
nvidia_rebuild_boot() {
@@ -107,12 +108,17 @@ nvidia_enable() {
changed=1
fi
fi
if ! nvidia_initramfs_ok && ! nvidia_modules_everywhere; then
warn "Not every installed kernel has the NVIDIA modules: skipping loading them early (the kernel parameters still apply)."
elif ! nvidia_initramfs_ok; then
nvidia_hook_install || { err "Installing the NVIDIA initramfs hook failed."; return 1; }
local had=0; [[ -f "$NVIDIA_INITRAMFS_CONF" ]] && had=1
sudo env NVIDIA_INITRAMFS_CONF="$NVIDIA_INITRAMFS_CONF" NVIDIA_MODULES_DIR="${NVIDIA_MODULES_DIR:-/usr/lib/modules}" "$NVIDIA_SCRIPT" sync
if [[ -f "$NVIDIA_INITRAMFS_CONF" && $had == 0 ]]; then
info "Loading the NVIDIA modules early (initramfs)..."
printf 'MODULES+=(nvidia nvidia_modeset nvidia_uvm nvidia_drm)\n' |
sudo install -Dm644 /dev/stdin "$NVIDIA_INITRAMFS_CONF" && changed=1
changed=1
elif [[ ! -f "$NVIDIA_INITRAMFS_CONF" && $had == 1 ]]; then
warn "A kernel without the NVIDIA modules is installed: not loading them early any more (rebuilding the initramfs without them)."
changed=1
elif [[ ! -f "$NVIDIA_INITRAMFS_CONF" ]] && ! nvidia_initramfs_ok; then
warn "Not every installed kernel has the NVIDIA modules: not loading them early for now (the kernel parameters still apply; this is checked again at every kernel update)."
fi
if [[ $changed == 1 ]]; then
nvidia_rebuild_boot || { err "Rebuilding the boot entries failed."; return 1; }
@@ -132,6 +138,7 @@ nvidia_disable() {
changed=1
fi
[[ -f "$NVIDIA_INITRAMFS_CONF" ]] && { sudo rm -f "$NVIDIA_INITRAMFS_CONF"; changed=1; }
sudo rm -f "$NVIDIA_HOOK" "$NVIDIA_SCRIPT"
[[ $changed == 1 ]] && nvidia_rebuild_boot
return 0
}