103 lines
3.6 KiB
Bash
Executable File
103 lines
3.6 KiB
Bash
Executable File
#!/bin/bash
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# Creates a swap file in the btrfs subvolume, adds the swap file to /etc/fstab,
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# adds a resume hook to mkinitcpio, and configures suspend-then-hibernate.
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if [[ ! -f /sys/power/image_size ]]; then
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echo -e "Hibernation is not supported on your system" >&2
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exit 0
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fi
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if ! command -v limine-mkinitcpio &>/dev/null; then
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echo "Skipping hibernation setup (requires Limine bootloader)"
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exit 0
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fi
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MKINITCPIO_CONF="/etc/mkinitcpio.conf.d/nomarchy_resume.conf"
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# Check if hibernation is already configured
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if [[ -f $MKINITCPIO_CONF ]] && grep -q "^HOOKS+=(resume)$" "$MKINITCPIO_CONF"; then
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echo "Hibernation is already set up"
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exit 0
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fi
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if [[ $1 != "--force" ]]; then
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MEM_TOTAL_HUMAN=$(free --human | awk '/Mem/ {print $2}')
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if ! gum confirm "Use $MEM_TOTAL_HUMAN on boot drive to make hibernation available?"; then
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exit 0
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fi
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fi
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SWAP_SUBVOLUME="/swap"
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SWAP_FILE="$SWAP_SUBVOLUME/swapfile"
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# Create btrfs subvolume for swap
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if ! sudo btrfs subvolume show "$SWAP_SUBVOLUME" &>/dev/null; then
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echo "Creating Btrfs subvolume"
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sudo btrfs subvolume create "$SWAP_SUBVOLUME"
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sudo chattr +C "$SWAP_SUBVOLUME"
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fi
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# Create swapfile
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if ! sudo swaplabel "$SWAP_FILE" &>/dev/null; then
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echo "Creating swapfile in Btrfs subvolume"
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MEM_TOTAL_KB="$(awk '/MemTotal/ {print $2}' /proc/meminfo)k"
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sudo btrfs filesystem mkswapfile -s "$MEM_TOTAL_KB" "$SWAP_FILE"
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fi
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# Add swapfile to fstab
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if ! grep -Fq "$SWAP_FILE" /etc/fstab; then
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echo "Adding swapfile to /etc/fstab"
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sudo cp -a /etc/fstab "/etc/fstab.$(date +%Y%m%d%H%M%S).back"
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printf "\n# Btrfs swapfile for system hibernation\n%s none swap defaults,pri=0 0 0\n" "$SWAP_FILE" | sudo tee -a /etc/fstab >/dev/null
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fi
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# Enable swap
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if ! swapon --show | grep -q "$SWAP_FILE"; then
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echo "Enabling swap on $SWAP_FILE"
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sudo swapon -p 0 "$SWAP_FILE"
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fi
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# Add resume hook to mkinitcpio
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sudo mkdir -p /etc/mkinitcpio.conf.d
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echo "Adding resume hook to $MKINITCPIO_CONF"
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echo "HOOKS+=(resume)" | sudo tee "$MKINITCPIO_CONF" >/dev/null
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# Ensure keyboard backlight doesn't prevent sleep
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sudo cp -p "$OMARCHY_PATH/default/systemd/system-sleep/keyboard-backlight" /usr/lib/systemd/system-sleep/
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# Add resume= kernel parameters so the initramfs resume hook knows where to find the
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# hibernation image. Without these, resume happens late (after GPU drivers load) and fails.
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RESUME_DROP_IN="/etc/limine-entry-tool.d/resume.conf"
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if [[ ! -f $RESUME_DROP_IN ]]; then
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echo "Adding resume kernel parameters"
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sudo swapon -p 0 "$SWAP_FILE" 2>/dev/null
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RESUME_DEVICE=$(findmnt -no SOURCE -T "$SWAP_FILE" | sed 's/\[.*\]//')
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RESUME_OFFSET=$(sudo btrfs inspect-internal map-swapfile -r "$SWAP_FILE")
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sudo mkdir -p /etc/limine-entry-tool.d
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echo "KERNEL_CMDLINE[default]+=\" resume=$RESUME_DEVICE resume_offset=$RESUME_OFFSET\"" | sudo tee "$RESUME_DROP_IN" >/dev/null
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sudo tee -a /etc/default/limine < "$RESUME_DROP_IN" >/dev/null
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fi
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# Use ACPI alarm for RTC wakeup on s2idle systems (needed for suspend-then-hibernate)
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if grep -q "\[s2idle\]" /sys/power/mem_sleep 2>/dev/null; then
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LIMINE_DROP_IN="/etc/limine-entry-tool.d/rtc-alarm.conf"
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if [[ ! -f $LIMINE_DROP_IN ]]; then
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echo "Enabling ACPI RTC alarm for s2idle suspend"
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sudo mkdir -p /etc/limine-entry-tool.d
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echo 'KERNEL_CMDLINE[default]+=" rtc_cmos.use_acpi_alarm=1"' | sudo tee "$LIMINE_DROP_IN" >/dev/null
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sudo tee -a /etc/default/limine < "$LIMINE_DROP_IN" >/dev/null
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fi
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fi
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# Regenerate initramfs and boot entry
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echo "Regenerating initramfs..."
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sudo limine-mkinitcpio
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sudo limine-update
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echo
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if [[ $1 != "--force" ]] && gum confirm "Reboot to enable hibernation?"; then
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nomarchy-system-reboot
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fi
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