Monorepo for Aesthetic.Computer
aesthetic.computer
init: remove tty0 debug text + add boot-timing log
Silences the "[init] USB_MOUNTED=1", "[init] GPU: card0 USB=1",
"[init] launching ac-native (SDL3 GPU enabled)...", and crash-info
echoes that flashed as raw white text over the splash for ~1 sec
on every boot. All that information is still captured in:
/mnt/pre-launch.log (existing PCI/ACPI/GPU/ALSA dump)
/mnt/ac-init.log (NEW — ac-native launch/exit/crash events)
/mnt/boot-timing.log (NEW — per-phase timing from kernel-handoff
to ac-native launch)
boot-timing.log format is one row per phase:
kernel-handoff Δ 0.000s @ 1.234s
tmpfs-mounts + creds Δ 0.012s @ 1.246s
gpu-wait + usb-mount converge Δ 0.876s @ 2.122s
power-governor + sound PM Δ 0.008s @ 2.130s
pre-ac-native launch Δ 0.003s @ 2.133s
Δ shows per-phase cost; @ is total seconds of kernel uptime at the
mark. Lets us see where the init spends its time so further boot-
speed optimizations are data-driven — we know which phase is worth
cutting vs which is already <10 ms.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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fedac/native/initramfs/init
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fedac/native/initramfs/init
···
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export PATH="/bin:/sbin:/usr/bin:/usr/sbin"
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# Capture kernel-handoff timestamp as early as possible so the boot
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# timing log has a meaningful zero. /proc/uptime is the first reliable
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# wall-clock source (shell `date` is usually epoch-zero at this point).
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# Falls back to 0 if /proc isn't mounted yet — which we fix in the next
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# block anyway.
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BOOT_INIT_START_SEC=$(awk '{print $1}' /proc/uptime 2>/dev/null || echo 0)
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mount -t proc proc /proc 2>/dev/null
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mount -t sysfs sysfs /sys 2>/dev/null
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mount -t devtmpfs devtmpfs /dev 2>/dev/null
···
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mount -t tmpfs tmpfs /tmp 2>/dev/null
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mount -t tmpfs tmpfs /run 2>/dev/null
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mount -t efivarfs efivarfs /sys/firmware/efi/efivars 2>/dev/null
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# Boot-phase timing helper. Appends "phase: +X.XXs @ T.TTs" to
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# /run/boot-timing so we can see where seconds are spent between
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# kernel handoff and ac-native launch. The full file is copied to
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# /mnt/boot-timing.log near the top of the pre-launch diagnostic
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# dump (when the USB config partition is available).
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BOOT_TIMING_LOG="/run/boot-timing"
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: > "$BOOT_TIMING_LOG"
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_boot_mark() {
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local now=$(awk '{print $1}' /proc/uptime 2>/dev/null || echo 0)
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local delta=$(awk "BEGIN{printf \"%.3f\", $now - $BOOT_INIT_START_SEC}")
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printf '%-32s Δ%6ss @%7ss\n' "$1" "$delta" "$now" >> "$BOOT_TIMING_LOG"
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BOOT_INIT_START_SEC=$now
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}
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_boot_mark "kernel-handoff"
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# debugfs — needed for ASoC DAPM state inspection in audio-diag.
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# CONFIG_DEBUG_FS must be y in the kernel; mount early so everything
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# downstream (audio-diag, gpio dump, etc) can read it.
···
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echo "root:x:0:" > /etc/group
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echo "root:x:0:root" > /etc/passwd
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_boot_mark "tmpfs-mounts + creds"
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# Kick off USB mount in the background — independent of GPU probe, so
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# we overlap the two waits instead of running them serially. The main
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# thread then waits for GPU (below) and finally waits for this mount
···
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# Converge: wait for the background USB mount to settle, pick up its result.
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wait $USB_MOUNT_PID 2>/dev/null
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[ -f /run/usb-mounted ] && USB_MOUNTED=$(cat /run/usb-mounted 2>/dev/null) && [ -z "$USB_MOUNTED" ] && USB_MOUNTED=0
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_boot_mark "gpu-wait + usb-mount converge"
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# Performance governor (silently skip if cpufreq not available)
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if [ -d /sys/devices/system/cpu/cpu0/cpufreq ]; then
···
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# Set AC_NOLAUNCH_DIAG=1 on the kernel cmdline to skip the dump entirely
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# (useful for locked-down production kiosks that don't want the sysfs
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# scraping cost at all).
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echo "[init] USB_MOUNTED=$USB_MOUNTED" > /dev/tty0 2>/dev/null
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_boot_mark "power-governor + sound PM"
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# Debug console writes to /dev/tty0 have been removed — they flashed
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# raw "[init] USB_MOUNTED=1" style text over the splash for ~1s on
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# every boot. Everything useful is still captured in the pre-launch
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# log + the new /mnt/boot-timing.log, visible post-hoc on the USB.
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if [ "$USB_MOUNTED" = "1" ]; then
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LOG=/mnt/pre-launch.log
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else
···
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*" AC_NOLAUNCH_DIAG=1 "*) : ;;
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*) _pre_launch_diag & ;;
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esac
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echo "[init] GPU: $(ls /dev/dri/ 2>/dev/null || echo NONE) USB=$USB_MOUNTED" > /dev/tty0 2>/dev/null
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# GPU + USB state used to echo here as raw "[init] GPU: card0 USB=1"
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# over the splash. Dropped — both are captured in the pre-launch log
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# and the new boot-timing log for post-mortem review.
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# Start Swank server in background (if SBCL image exists)
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SWANK_PID=0
···
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SWANK_PID=$!
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fi
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_boot_mark "pre-ac-native launch"
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# Copy the timing log to USB before ac-native takes over stdout/err
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# — so the user can post-mortem "how long did each phase take" right
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# off the stick without having to dig into kmsg.
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if [ "$USB_MOUNTED" = "1" ]; then
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cp /run/boot-timing /mnt/boot-timing.log 2>/dev/null
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fi
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# Main loop — ac-native runs as a child process (not PID 1).
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# First attempt: with SDL3/GPU env vars.
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# If it crashes (signal), retry without SDL (AC_NO_SDL=1).
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# If that also crashes, keep retrying without SDL with backoff.
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#
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# All launch / exit / crash messages are appended to /mnt/ac-crash.log
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# (persistent) and the stderr log. We no longer write them to /dev/tty0
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# because that paints raw text on top of the splash during the boot
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# transition.
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CRASH_COUNT=0
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SDL_ENABLED=1
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while true; do
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if [ "$SDL_ENABLED" = "1" ]; then
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echo "[init] launching ac-native (SDL3 GPU enabled)..." > /dev/tty0 2>/dev/null
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LD_LIBRARY_PATH="/lib64" LIBGL_DRIVERS_PATH="/lib64/dri" GBM_DRIVERS_PATH="/lib64/dri" MESA_LOADER_DRIVER_OVERRIDE=iris \
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/ac-native /piece.mjs >>/mnt/ac-native-stdout.log 2>>/mnt/ac-native-stderr.log &
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else
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echo "[init] launching ac-native (DRM only)..." > /dev/tty0 2>/dev/null
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LD_LIBRARY_PATH="/lib64" AC_NO_SDL=1 \
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/ac-native /piece.mjs >>/mnt/ac-native-stdout.log 2>>/mnt/ac-native-stderr.log &
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fi
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CHILD_PID=$!
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wait $CHILD_PID
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EXIT_CODE=$?
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# Save crash info
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echo "[init] ac-native (pid $CHILD_PID) exited: code=$EXIT_CODE crash=$CRASH_COUNT sdl=$SDL_ENABLED" > /dev/tty0 2>/dev/null
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head -5 /tmp/ac-native-stderr.log > /dev/tty0 2>/dev/null
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# Exit info → log files only (not tty0; the splash stays clean).
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if [ "$USB_MOUNTED" = "1" ]; then
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echo "[init] ac-native pid=$CHILD_PID exit=$EXIT_CODE crash=$CRASH_COUNT sdl=$SDL_ENABLED $(date 2>/dev/null)" >> /mnt/ac-init.log
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fi
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# Save crash info to USB if mounted
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if [ "$USB_MOUNTED" = "1" ]; then
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echo "exit=$EXIT_CODE crash=$CRASH_COUNT $(date 2>/dev/null)" >> /mnt/ac-crash.log
···
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if [ "$SDL_ENABLED" = "1" ] && [ "$EXIT_CODE" -gt 128 ]; then
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# Exit > 128 = killed by signal (128 + signal number)
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SIG=$((EXIT_CODE - 128))
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echo "[init] Signal $SIG with SDL — disabling GPU, retrying with DRM..." > /dev/tty0 2>/dev/null
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SDL_ENABLED=0
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if [ "$USB_MOUNTED" = "1" ]; then
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echo "sdl_crash: signal=$SIG, disabling SDL" >> /mnt/ac-crash.log