Monorepo for Aesthetic.Computer
aesthetic.computer
native: eMMC drivers, SOF audio, Chromebook ESP install, sysrq reboot
Fixes G7 Chromebook (Jasper Lake) install + audio + reboot issues
diagnosed from USB pre-launch.log:
- kernel/config-minimal: CONFIG_MMC + SDHCI_PCI/ACPI (eMMC was invisible
— no /dev/mmcblk* nodes); CONFIG_MAGIC_SYSRQ=y so echo b > sysrq-trigger
can rescue a hung reboot on kernels where busybox reboot(2) is blocked
- CONFIG_CMDLINE: drop snd_intel_dspcfg.dsp_driver=0 — forcing legacy HDA
breaks SOF on Jasper Lake; let the driver autoprobe (SOF on Chromebook,
legacy HDA on ThinkPad X13)
- ac-native.c: install loop scans p1..p16 over two passes; pass 0 is
non-destructive so Chromebook ESP at p12 is found before the p1 rescue
mkfs would clobber the stateful (ext4) partition
- initramfs/init: log mmcblk/pci/rfkill/asound state; pipe /dev/kmsg
instead of dmesg (busybox applet absent); after reboot -f, fall back
to sysrq-b then sysrq-c so the machine never silently freezes
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
+72
-10
+43
-4
fedac/native/initramfs/init
+43
-4
fedac/native/initramfs/init
···
133
133
ls -la /dev/dri/ >> $LOG 2>&1
134
134
ls -la /dev/fb* >> $LOG 2>&1
135
135
echo "block devs:" >> $LOG
136
-
ls /dev/sd* /dev/nvme* >> $LOG 2>&1
137
-
echo "=== DMESG ===" >> $LOG
138
-
dmesg >> $LOG 2>&1
136
+
ls /dev/sd* /dev/nvme* /dev/mmcblk* 2>/dev/null >> $LOG
137
+
echo "net ifaces:" >> $LOG
138
+
ls /sys/class/net/ 2>/dev/null >> $LOG
139
+
echo "rfkill:" >> $LOG
140
+
for rf in /sys/class/rfkill/rfkill*; do
141
+
[ -d "$rf" ] || continue
142
+
echo " $(basename $rf): type=$(cat $rf/type 2>/dev/null) soft=$(cat $rf/soft 2>/dev/null) hard=$(cat $rf/hard 2>/dev/null)" >> $LOG
143
+
done
144
+
echo "sound cards:" >> $LOG
145
+
cat /proc/asound/cards 2>/dev/null >> $LOG
146
+
echo "pci devices (storage/audio/net):" >> $LOG
147
+
if [ -d /sys/bus/pci/devices ]; then
148
+
for d in /sys/bus/pci/devices/*; do
149
+
[ -d "$d" ] || continue
150
+
class=$(cat $d/class 2>/dev/null)
151
+
# 0x0c* = serial bus (eMMC), 0x0104* = RAID, 0x0106* = SATA, 0x0108* = NVMe
152
+
# 0x0280* = network wireless, 0x0403* = audio
153
+
case "$class" in
154
+
0x010*|0x028*|0x040*|0x080501|0x0805*)
155
+
ven=$(cat $d/vendor 2>/dev/null)
156
+
dev=$(cat $d/device 2>/dev/null)
157
+
drv=$(basename $(readlink $d/driver 2>/dev/null) 2>/dev/null)
158
+
echo " $(basename $d) class=$class ven=$ven dev=$dev drv=${drv:-NONE}" >> $LOG
159
+
;;
160
+
esac
161
+
done
162
+
fi
163
+
echo "=== DMESG (kernel ring) ===" >> $LOG
164
+
# Capture 2s of /dev/kmsg output (busybox dmesg applet may be absent)
165
+
( cat /dev/kmsg >> $LOG 2>&1 ) &
166
+
KMSG_PID=$!
167
+
sleep 2
168
+
kill $KMSG_PID 2>/dev/null
139
169
echo "=== CPUINFO ===" >> $LOG
140
170
head -30 /proc/cpuinfo >> $LOG 2>&1
141
171
echo "=== CMDLINE ===" >> $LOG
···
193
223
sync
194
224
echo 0 > /proc/sys/kernel/printk 2>/dev/null
195
225
printf '\033[?25l\033[2J' > /dev/tty0 2>/dev/null
226
+
# Enable all sysrq if kernel supports it (belt-and-suspenders)
227
+
echo 1 > /proc/sys/kernel/sysrq 2>/dev/null
228
+
# Try every reboot path in order — different kernels accept different ones
196
229
reboot -f 2>/dev/null
197
230
echo b > /proc/sysrq-trigger 2>/dev/null
198
-
sleep 30
231
+
# Last resort: direct reboot(2) syscall via busybox `reboot`
232
+
busybox reboot -f 2>/dev/null
233
+
halt -f 2>/dev/null
234
+
sleep 5
235
+
# If we're still here, kernel panic is preferable to a silent freeze
236
+
echo c > /proc/sysrq-trigger 2>/dev/null
237
+
sleep 5
199
238
break
200
239
fi
201
240
+17
-3
fedac/native/kernel/config-minimal
+17
-3
fedac/native/kernel/config-minimal
···
424
424
CONFIG_LEGACY_VSYSCALL_XONLY=y
425
425
# CONFIG_LEGACY_VSYSCALL_NONE is not set
426
426
CONFIG_CMDLINE_BOOL=y
427
-
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"
427
+
CONFIG_CMDLINE="console=tty0 quiet loglevel=3 vt.global_cursor_default=0 init=/init mitigations=off 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"
428
428
# CONFIG_CMDLINE_OVERRIDE is not set
429
429
CONFIG_MODIFY_LDT_SYSCALL=y
430
430
# CONFIG_STRICT_SIGALTSTACK_SIZE is not set
···
3336
3336
CONFIG_UCSI_ACPI=y
3337
3337
CONFIG_USB_ROLE_SWITCH=y
3338
3338
CONFIG_USB_ROLES_INTEL_XHCI=y
3339
-
# CONFIG_MMC is not set
3339
+
CONFIG_MMC=y
3340
+
CONFIG_PWRSEQ_EMMC=y
3341
+
CONFIG_PWRSEQ_SIMPLE=y
3342
+
CONFIG_MMC_BLOCK=y
3343
+
CONFIG_MMC_BLOCK_MINORS=32
3344
+
CONFIG_MMC_SDHCI=y
3345
+
CONFIG_MMC_SDHCI_IO_ACCESSORS=y
3346
+
CONFIG_MMC_SDHCI_PCI=y
3347
+
CONFIG_MMC_RICOH_MMC=y
3348
+
CONFIG_MMC_SDHCI_ACPI=y
3349
+
CONFIG_MMC_SDHCI_PLTFM=y
3350
+
CONFIG_MMC_CQHCI=y
3340
3351
# CONFIG_SCSI_UFSHCD is not set
3341
3352
# CONFIG_MEMSTICK is not set
3342
3353
CONFIG_NEW_LEDS=y
···
4355
4366
#
4356
4367
# Generic Kernel Debugging Instruments
4357
4368
#
4358
-
# CONFIG_MAGIC_SYSRQ is not set
4369
+
CONFIG_MAGIC_SYSRQ=y
4370
+
CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x1ff
4371
+
CONFIG_MAGIC_SYSRQ_SERIAL=y
4372
+
CONFIG_MAGIC_SYSRQ_SERIAL_SEQUENCE=""
4359
4373
# CONFIG_DEBUG_FS is not set
4360
4374
CONFIG_HAVE_ARCH_KGDB=y
4361
4375
# CONFIG_KGDB is not set
+12
-3
fedac/native/src/ac-native.c
+12
-3
fedac/native/src/ac-native.c
···
1176
1176
if (rem == 1) continue; // removable = USB
1177
1177
}
1178
1178
1179
-
// Try partitions 1-8
1180
-
for (int p = 1; p <= 8 && !installed; p++) {
1179
+
// Two-pass partition scan. Pass 0: probe p1..p16 for an existing
1180
+
// vfat partition (non-destructive) — finds the Chromebook ESP at
1181
+
// p12 before we would otherwise reformat p1 (stateful/ext4) on
1182
+
// Chromebooks and clobber user data. Pass 1: fall back to the
1183
+
// p=1 rescue reformat for stock Linux layouts where no ESP exists.
1184
+
for (int pass = 0; pass < 2 && !installed; pass++) {
1185
+
int allow_rescue_mkfs = (pass == 1);
1186
+
for (int p = 1; p <= 16 && !installed; p++) {
1181
1187
char devpath[32];
1182
1188
// NVMe + eMMC use "p<N>" suffix (name ends in a digit); SATA
1183
1189
// just appends the number to the base name.
···
1197
1203
// sfdisk created it but mkfs never succeeded), try to format
1198
1204
// it now. Only attempt this on the first partition (which is
1199
1205
// the ESP slot) and only if the partition is large enough.
1200
-
if (p == 1) {
1206
+
// Gated to pass==1 so we never clobber Chromebook p1 STATE
1207
+
// when an existing vfat ESP is available elsewhere (e.g. p12).
1208
+
if (p == 1 && allow_rescue_mkfs) {
1201
1209
long long part_bytes = 0;
1202
1210
int pfd = open(devpath, O_RDONLY | O_CLOEXEC);
1203
1211
if (pfd >= 0) {
···
1732
1740
}
1733
1741
1734
1742
umount("/tmp/hd");
1743
+
}
1735
1744
}
1736
1745
}
1737
1746