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synced 2026-10-03 17:41:58 +02:00
feat: Pin the kernel to 7.1.6-1 on a Steam Machine
Sub-option of Steam Machine support, ticked along with it: newer CachyOS kernels make the Steam Machine reboot instead of shutting down. Packages are kept in /var/cache/steamify/kernel and reinstalled from there; else pacman's cache, the CachyOS archive or mirror, or PINNED_KERNEL_URL.
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@@ -14,58 +14,145 @@ detect_valve_fremont() {
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[[ "$vendor" == "OEM" && "$product" == "F7F" ]]
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}
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# Kernel pinned on a Steam Machine: with newer linux-cachyos releases it
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# reboots instead of shutting down. The packages are kept in
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# PINNED_KERNEL_DIR, so re-applying (or reinstalling after an update slipped
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# through) needs no download.
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PINNED_KERNEL_VER="7.1.6-1"
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PINNED_KERNEL_KVER="7.1.6-1-cachyos"
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PINNED_KERNEL_PKGS=(linux-cachyos linux-cachyos-headers)
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PINNED_KERNEL_DIR="${PINNED_KERNEL_DIR:-/var/cache/steamify/kernel}"
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# Tried in order, after the kernel dir and pacman's cache. The archive keeps
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# every release; the mirror only the current one. PINNED_KERNEL_URL puts
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# another source (a directory holding the files) in front.
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PINNED_KERNEL_SOURCES=(
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${PINNED_KERNEL_URL:+"$PINNED_KERNEL_URL"}
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"https://archive.cachyos.org/archive/cachyos"
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"https://mirror.cachyos.org/repo/x86_64/cachyos"
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)
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pinned_kernel_installed() {
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local p
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for p in "${PINNED_KERNEL_PKGS[@]}"; do
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[[ "$(pacman -Q "$p" 2>/dev/null)" == "$p $PINNED_KERNEL_VER" ]] || return 1
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done
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}
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fetch_pinned_kernel_file() {
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# $1 = file name. Local kernel dir first, then pacman's cache, then the
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# download sources. Downloads go to a .part file so a broken one is never
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# mistaken for a finished one.
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local f="$1" dest="$PINNED_KERNEL_DIR/$1" src
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[[ -s "$dest" ]] && return 0
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if [[ -s "/var/cache/pacman/pkg/$f" ]]; then
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sudo cp "/var/cache/pacman/pkg/$f" "$dest" && return 0
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fi
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for src in "${PINNED_KERNEL_SOURCES[@]}"; do
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if sudo curl -fL --retry 2 --connect-timeout 15 -o "$dest.part" "$src/$f" 2>/dev/null; then
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sudo mv "$dest.part" "$dest"
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return 0
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fi
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warn "Couldn't get $f from $src, trying the next source..."
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done
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sudo rm -f "$dest.part"
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return 1
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}
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pin_kernel_in_pacman_conf() {
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# Adds our packages to IgnorePkg in [options], keeping what's there.
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local p
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for p in "${PINNED_KERNEL_PKGS[@]}"; do
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grep -Eq "^IgnorePkg\s*=.*(\s|=)$p(\s|$)" /etc/pacman.conf && continue
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if grep -Eq '^IgnorePkg\s*=' /etc/pacman.conf; then
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sudo sed -i -E "0,/^IgnorePkg\s*=/s/^(IgnorePkg\s*=.*)$/\1 $p/" /etc/pacman.conf
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else
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sudo sed -i -E "0,/^\[options\]/s//[options]\nIgnorePkg = $p/" /etc/pacman.conf
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fi
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done
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}
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unpin_kernel_in_pacman_conf() {
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local p
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for p in "${PINNED_KERNEL_PKGS[@]}"; do
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sudo sed -i -E "/^IgnorePkg\s*=/s/\s$p(\s|$)/\1/" /etc/pacman.conf
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done
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# Drop the line if nothing is left on it.
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sudo sed -i -E '/^IgnorePkg\s*=\s*$/d' /etc/pacman.conf
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}
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install_pinned_kernel() {
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# Define urls for downloading the kernel and it's headers
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local KERNEL_URL="https://archive.cachyos.org/archive/cachyos/linux-cachyos-7.1.6-1-x86_64.pkg.tar.zst"
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local KERNEL_SIG_URL="https://archive.cachyos.org/archive/cachyos/linux-cachyos-7.1.6-1-x86_64.pkg.tar.zst.sig"
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local HEADERS_URL="https://archive.cachyos.org/archive/cachyos/linux-cachyos-headers-7.1.6-1-x86_64.pkg.tar.zst"
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local HEADERS_SIG_URL="https://archive.cachyos.org/archive/cachyos/linux-cachyos-headers-7.1.6-1-x86_64.pkg.tar.zst.sig"
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# Resolve filenames
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local KERNEL_PKG=$(basename "$KERNEL_URL")
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local HEADERS_PKG=$(basename "$HEADERS_URL")
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info "Downloading CachyOS kernel packages and headers..."
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wget -c "$KERNEL_URL" "$KERNEL_SIG_URL" "$HEADERS_URL" "$HEADERS_SIG_URL" || { err "Failed to download kernel packages."; return 1; }
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info "Installing packages and verifying signatures via pacman..."
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sudo pacman -U --noconfirm "$KERNEL_PKG" "$HEADERS_PKG" || { err "Failed to install packages."; return 1; }
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info "Locking the kernel packages to prevent updates..."
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sudo sed -i '/^IgnorePkg/s/ linux-cachyos linux-cachyos-headers//' /etc/pacman.conf
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sudo sed -i '/^#IgnorePkg/s/^#//' /etc/pacman.conf
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sudo sed -i '/^IgnorePkg/ s/$/ linux-cachyos linux-cachyos-headers/' /etc/pacman.conf
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# FIX: Recover symlinks directly to accompany led install
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local CURRENT_KVER="7.1.6-1-cachyos"
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if [ -d "/usr/src/linux-${CURRENT_KVER}" ]; then
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info "Koppelen van kernel-headers symlink..."
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sudo ln -snf "/usr/src/linux-${CURRENT_KVER}" "/usr/lib/modules/${CURRENT_KVER}/build"
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sudo mkdir -p "$PINNED_KERNEL_DIR"
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pin_kernel_in_pacman_conf
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if pinned_kernel_installed; then
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ok "Kernel $PINNED_KERNEL_VER already installed and pinned."
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return 0
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fi
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rm -f "$KERNEL_PKG" "${KERNEL_PKG}.sig" "$HEADERS_PKG" "${HEADERS_PKG}.sig"
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ok "Custom kernel setup finished."
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local p f files=()
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info "Getting kernel $PINNED_KERNEL_VER (kept in $PINNED_KERNEL_DIR)..."
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for p in "${PINNED_KERNEL_PKGS[@]}"; do
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f="$p-$PINNED_KERNEL_VER-x86_64.pkg.tar.zst"
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fetch_pinned_kernel_file "$f" && fetch_pinned_kernel_file "$f.sig" ||
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{ err "Couldn't download $f from any source."; return 1; }
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files+=("$PINNED_KERNEL_DIR/$f")
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done
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# pacman checks each package against the .sig next to it.
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info "Installing kernel $PINNED_KERNEL_VER..."
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if ! sudo pacman -U --noconfirm "${files[@]}"; then
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err "Installing kernel $PINNED_KERNEL_VER failed. If a file is damaged, delete it from $PINNED_KERNEL_DIR and try again."
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return 1
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fi
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[[ "$(uname -r)" != "$PINNED_KERNEL_KVER" ]] && RESTART_FOR_LOGIN=true
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ok "Kernel $PINNED_KERNEL_VER installed and pinned (restart to use it)."
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}
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remove_kernel_pin() {
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# Back to CachyOS's current kernel. The packages stay in
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# PINNED_KERNEL_DIR, so turning support on again doesn't download.
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unpin_kernel_in_pacman_conf
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pinned_kernel_installed || return 0
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info "Updating the kernel back to CachyOS's current version..."
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sudo pacman -Syu --noconfirm ||
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{ warn "Updating the kernel failed; run: sudo pacman -Syu"; return 0; }
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RESTART_FOR_LOGIN=true
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}
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# "Pin the kernel" menu item, a sub-option of Steam Machine support.
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kpin_status() {
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pinned_kernel_installed && grep -Eq '^IgnorePkg\s*=.*\slinux-cachyos(\s|$)' /etc/pacman.conf
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}
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kpin_enable() {
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install_pinned_kernel || return 1
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# The DKMS pacman hook built leds-valve for the new headers; make sure.
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if pacman -Qi leds-valve-dkms-git >/dev/null 2>&1 &&
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! dkms status -k "$PINNED_KERNEL_KVER" leds-valve-dkms 2>/dev/null | grep -q installed; then
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sudo dkms install leds-valve-dkms/0.1 -k "$PINNED_KERNEL_KVER" ||
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warn "Building the LED driver for $PINNED_KERNEL_KVER failed."
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fi
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}
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kpin_disable() { remove_kernel_pin; }
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install_kernel_headers() {
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# DKMS can only build leds-valve against kernels whose headers are
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# installed. CachyOS ships several kernels (linux-cachyos, -lts, -bore,
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# ...); install the matching -headers package for every one present.
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local -a kernels headers=()
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local k
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local target_kver="7.1.6-1-cachyos"
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# FIX: Als de specifieke 7.1.6 headers al lokaal op de schijf staan, hoeft pacman niks te doen
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if [ -d "/usr/src/linux-${target_kver}" ] || [ -d "/usr/lib/modules/${target_kver}/build" ]; then
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info "Geverifieerd: Gevolgde CachyOS 7.1.6 headers zijn reeds lokaal aanwezig. Pacman-update overgeslagen."
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return 0
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fi
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# Originele fallback-loop voor het geval er andere kernels actief zijn
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mapfile -t kernels < <(pacman -Qqo /usr/lib/modules/*/pkgbase 2>/dev/null | sort -u)
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# Installed headers are left alone: -S would update them past a pinned
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# kernel (linux-cachyos-headers on a Steam Machine).
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local have=0
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for k in "${kernels[@]}"; do
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pacman -Q "${k}-headers" >/dev/null 2>&1 && { have=$((have + 1)); continue; }
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pacman -Si "${k}-headers" >/dev/null 2>&1 && headers+=("${k}-headers")
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done
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if [[ ${#headers[@]} -eq 0 && $have -gt 0 ]]; then
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ok "Kernel headers already installed."
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return 0
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fi
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if [[ ${#headers[@]} -eq 0 ]]; then
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warn "Couldn't work out which kernel headers package you need."
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warn "Install the -headers package for your kernel (e.g. linux-cachyos-headers) yourself."
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@@ -243,9 +330,6 @@ machine_status() {
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}
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machine_enable() {
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# Install and pin the specific CachyOS kernel first
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install_pinned_kernel || { err "Custom kernel setup failed."; return 1; }
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ensure_aur_helper || { warn "Couldn't set up an AUR helper automatically. Install yay or paru, then run the wizard again."; return 1; }
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install_valve_led_driver || { warn "LED driver setup ran into a problem - see errors above."; return 1; }
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install_headers_boot_check
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@@ -282,9 +366,6 @@ EOF
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machine_disable() {
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info "Removing Steam Machine support..."
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# Disables services, removes packages, and unpins the kernel
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sudo sed -i '/^IgnorePkg/s/ linux-cachyos linux-cachyos-headers//' /etc/pacman.conf
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sudo pacman -Syu --noconfirm linux-cachyos linux-cachyos-headers || { warn "Kernel upgrade issues."; }
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systemctl --user disable --now steamos-manager.service 2>/dev/null
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sudo systemctl disable --now steamos-manager.service 2>/dev/null
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sudo systemctl disable --now inputplumber.service 2>/dev/null
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