Monorepo for Aesthetic.Computer
aesthetic.computer
ac-native: enable KMS for direct-boot SDL3, log SDL3 to ac_log
- Remove `nomodeset` from kernel cmdline so i915 KMS works when
booting the kernel directly as BOOTX64.EFI (no systemd-boot).
This was preventing SDL3 KMSDRM backend from initializing.
- Change loglevel=7 to loglevel=3 quiet for clean direct-boot.
- Route all SDL3 init/probe messages through ac_log() instead of
fprintf(stderr) so they persist in /mnt/ac-native.log.
- Fix MAC partition sizing in flash-helper (STAGE_MB*2+128) to
fit both boot.efi and BOOTX64.EFI copies of the kernel.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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fedac/native/kernel/config-minimal
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fedac/native/kernel/config-minimal
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CONFIG_LEGACY_VSYSCALL_XONLY=y
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# CONFIG_LEGACY_VSYSCALL_NONE is not set
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CONFIG_CMDLINE_BOOL=y
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CONFIG_CMDLINE="console=tty0 loglevel=7 vt.global_cursor_default=0 init=/init mitigations=off snd_intel_dspcfg.dsp_driver=0 snd_hda_intel.power_save=0 nmi_watchdog=0 tsc=reliable no_timer_check acpi_backlight=native thinkpad_acpi.brightness_enable=1 i8042.reset i8042.nomux nomodeset efi=noruntime"
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CONFIG_CMDLINE="console=tty0 quiet loglevel=3 vt.global_cursor_default=0 init=/init mitigations=off snd_intel_dspcfg.dsp_driver=0 snd_hda_intel.power_save=0 nmi_watchdog=0 tsc=reliable no_timer_check acpi_backlight=native thinkpad_acpi.brightness_enable=1 i8042.reset i8042.nomux efi=noruntime"
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# CONFIG_CMDLINE_OVERRIDE is not set
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CONFIG_MODIFY_LDT_SYSCALL=y
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# CONFIG_STRICT_SIGALTSTACK_SIZE is not set
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fedac/native/src/drm-display.c
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fedac/native/src/drm-display.c
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#include <signal.h>
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#include <sys/wait.h>
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extern void ac_log(const char *fmt, ...);
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// Probe whether SDL3 can init without crashing (runs in a child process)
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static int sdl_probe_safe(void) {
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pid_t pid = fork();
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int status = 0;
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waitpid(pid, &status, 0);
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if (WIFSIGNALED(status)) {
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fprintf(stderr, "[sdl3] Probe crashed (signal %d) — skipping SDL3\n",
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WTERMSIG(status));
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ac_log("[sdl3] Probe crashed (signal %d) — skipping SDL3\n",
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WTERMSIG(status));
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return 0;
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}
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if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
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return 1;
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}
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fprintf(stderr, "[sdl3] Probe failed (exit %d) — skipping SDL3\n",
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WIFEXITED(status) ? WEXITSTATUS(status) : -1);
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ac_log("[sdl3] Probe failed (exit %d) — skipping SDL3\n",
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WIFEXITED(status) ? WEXITSTATUS(status) : -1);
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return 0;
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}
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···
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if (!sdl_lib) {
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sdl_lib = dlopen("libSDL3.so.0", RTLD_LAZY);
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if (!sdl_lib) {
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fprintf(stderr, "[sdl3] libSDL3.so.0 not found — skipping\n");
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ac_log("[sdl3] libSDL3.so.0 not found — skipping\n");
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return NULL;
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}
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}
···
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}
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if (!SDL_Init(SDL_INIT_VIDEO)) {
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fprintf(stderr, "[sdl3] SDL_Init failed: %s\n", SDL_GetError());
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ac_log("[sdl3] SDL_Init failed: %s\n", SDL_GetError());
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return NULL;
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}
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// Get primary display and its mode
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SDL_DisplayID primary = SDL_GetPrimaryDisplay();
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if (!primary) {
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fprintf(stderr, "[sdl3] No primary display: %s\n", SDL_GetError());
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ac_log("[sdl3] No primary display: %s\n", SDL_GetError());
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SDL_Quit();
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return NULL;
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}
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const SDL_DisplayMode *dm = SDL_GetDesktopDisplayMode(primary);
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if (!dm) {
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fprintf(stderr, "[sdl3] GetDesktopDisplayMode failed: %s\n", SDL_GetError());
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ac_log("[sdl3] GetDesktopDisplayMode failed: %s\n", SDL_GetError());
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SDL_Quit();
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return NULL;
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}
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SDL_Window *win = SDL_CreateWindow("ac-native", dm->w, dm->h,
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SDL_WINDOW_FULLSCREEN);
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if (!win) {
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fprintf(stderr, "[sdl3] CreateWindow failed: %s\n", SDL_GetError());
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ac_log("[sdl3] CreateWindow failed: %s\n", SDL_GetError());
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SDL_Quit();
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return NULL;
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}
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SDL_Renderer *ren = SDL_CreateRenderer(win, NULL);
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if (!ren) {
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fprintf(stderr, "[sdl3] CreateRenderer failed: %s\n", SDL_GetError());
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ac_log("[sdl3] CreateRenderer failed: %s\n", SDL_GetError());
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SDL_DestroyWindow(win);
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SDL_Quit();
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return NULL;
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// Log renderer info
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const char *ren_name = SDL_GetRendererName(ren);
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fprintf(stderr, "[sdl3] Renderer: %s\n", ren_name ? ren_name : "unknown");
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ac_log("[sdl3] Renderer: %s\n", ren_name ? ren_name : "unknown");
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ACDisplay *d = calloc(1, sizeof(ACDisplay));
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d->fd = -1;
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snprintf(d->sdl_renderer_name, sizeof(d->sdl_renderer_name), "%s",
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ren_name ? ren_name : "unknown");
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fprintf(stderr, "[sdl3] Ready (%dx%d)\n", d->width, d->height);
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ac_log("[sdl3] Ready (%dx%d)\n", d->width, d->height);
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return d;
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}
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#endif /* USE_SDL */
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#ifdef USE_SDL
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ACDisplay *sdl = sdl_init();
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if (sdl) return sdl;
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fprintf(stderr, "[drm] SDL3 failed, falling back to DRM dumb buffers\n");
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ac_log("[drm] SDL3 failed, falling back to DRM dumb buffers\n");
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#endif
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ACDisplay *d = calloc(1, sizeof(ACDisplay));