2024/09/08(日)LinuxマシンのBIOS更新（ASUS製マザーボード）
巷を騒がせている，Intel Core iシリーズの13，14世代の不具合（Intel microcode 0x129問題）に対応する更新です．
Windowsマシンであれば，OS上から更新するツールがあるので深く考えなくてもできると思いますが，
Linux向けにそういったツールはないので*1，別の方法を探しました．
ネットを徘徊した結果，最近のASUSマザーは“ASUS EZ Flash 3”という，
USBメモリからBIOS更新をするツールが用意されていることがわかったので，それを使いました．
更新対象としたのは，過去の記事に書いたとおり，ASUS PRIME H770-PLUS D4というマザーボードです．
ASUSの解説を見ながら，USBメモリの一番上の階層に更新ファイルを置いて，BIOS画面上からEZ Flash 3を実行するだけですんなり完了しました．
適用後にffmpegで動画ファイルエンコード処理をしましたが，以前は温度爆上がり状態だったものが，マイルドになって温度が下がり，ちょっと処理速度が落ちました．
BIOS更新前の挙動は安定していて，かつ思いっきりぶん回している感があって良かったのですが*2，
長期的に見ると壊れてしまう可能性は捨てきれないので仕方がないですね．
性能は低下しましたが，それでも十分速いので当面はこのまま使います．
参考・記録として，BIOS更新前後のffmpeg実行中のsensorsコマンドの結果を貼っておきます．
下の通り更新前はCPU温度が100度付近に張り付いていたので，
壊れる上限まで動かして大丈夫なのか少しだけ不安でした．
リテールの空冷ファンだから仕方ないというのと，壊れるような制御はしないだろうと思っていたのですが……．
Before:
ushi@bigowl:~$ sensors nct6798-isa-0290 Adapter: ISA adapter in0: 1.04 V (min = +0.00 V, max = +1.74 V) in1: 1.02 V (min = +0.00 V, max = +0.00 V) ALARM in2: 3.38 V (min = +0.00 V, max = +0.00 V) ALARM in3: 3.28 V (min = +0.00 V, max = +0.00 V) ALARM in4: 1.02 V (min = +0.00 V, max = +0.00 V) ALARM in5: 200.00 mV (min = +0.00 V, max = +0.00 V) ALARM in6: 1.02 V (min = +0.00 V, max = +0.00 V) ALARM in7: 3.38 V (min = +0.00 V, max = +0.00 V) ALARM in8: 3.14 V (min = +0.00 V, max = +0.00 V) ALARM in9: 528.00 mV (min = +0.00 V, max = +0.00 V) ALARM in10: 600.00 mV (min = +0.00 V, max = +0.00 V) ALARM in11: 816.00 mV (min = +0.00 V, max = +0.00 V) ALARM in12: 1.07 V (min = +0.00 V, max = +0.00 V) ALARM in13: 1.02 V (min = +0.00 V, max = +0.00 V) ALARM in14: 1.02 V (min = +0.00 V, max = +0.00 V) ALARM fan1: 0 RPM (min = 0 RPM) fan2: 3154 RPM (min = 0 RPM) fan4: 0 RPM (min = 0 RPM) fan5: 0 RPM (min = 0 RPM) fan6: 0 RPM (min = 0 RPM) fan7: 0 RPM (min = 0 RPM) SYSTIN: +34.0°C (high = +80.0°C, hyst = +75.0°C) sensor = thermistor CPUTIN: +72.5°C (high = +80.0°C, hyst = +75.0°C) sensor = thermistor AUXTIN0: +25.5°C sensor = thermistor AUXTIN1: +15.0°C sensor = thermistor AUXTIN2: -9.0°C sensor = thermistor AUXTIN3: +25.0°C sensor = thermistor PECI Agent 0 Calibration: +87.5°C PCH_CHIP_CPU_MAX_TEMP: +0.0°C PCH_CHIP_TEMP: +0.0°C PCH_CPU_TEMP: +0.0°C intrusion0: OK intrusion1: ALARM beep_enable: disabled acpitz-acpi-0 Adapter: ACPI interface temp1: +27.8°C (crit = +105.0°C) coretemp-isa-0000 Adapter: ISA adapter Package id 0: +100.0°C (high = +80.0°C, crit = +100.0°C) Core 0: +98.0°C (high = +80.0°C, crit = +100.0°C) Core 4: +92.0°C (high = +80.0°C, crit = +100.0°C) Core 8: +97.0°C (high = +80.0°C, crit = +100.0°C) Core 12: +96.0°C (high = +80.0°C, crit = +100.0°C) Core 16: +95.0°C (high = +80.0°C, crit = +100.0°C) Core 20: +100.0°C (high = +80.0°C, crit = +100.0°C) Core 24: +85.0°C (high = +80.0°C, crit = +100.0°C) Core 25: +85.0°C (high = +80.0°C, crit = +100.0°C) Core 26: +85.0°C (high = +80.0°C, crit = +100.0°C) Core 27: +85.0°C (high = +80.0°C, crit = +100.0°C) Core 28: +88.0°C (high = +80.0°C, crit = +100.0°C) Core 29: +88.0°C (high = +80.0°C, crit = +100.0°C) Core 30: +88.0°C (high = +80.0°C, crit = +100.0°C) Core 31: +88.0°C (high = +80.0°C, crit = +100.0°C) ushi@bigowl:~$After:
ushi@bigowl:~$ sensors nct6798-isa-0290 Adapter: ISA adapter in0: 880.00 mV (min = +0.00 V, max = +1.74 V) in1: 1.02 V (min = +0.00 V, max = +0.00 V) ALARM in2: 3.38 V (min = +0.00 V, max = +0.00 V) ALARM in3: 3.30 V (min = +0.00 V, max = +0.00 V) ALARM in4: 1.02 V (min = +0.00 V, max = +0.00 V) ALARM in5: 192.00 mV (min = +0.00 V, max = +0.00 V) ALARM in6: 1.01 V (min = +0.00 V, max = +0.00 V) ALARM in7: 3.38 V (min = +0.00 V, max = +0.00 V) ALARM in8: 3.14 V (min = +0.00 V, max = +0.00 V) ALARM in9: 528.00 mV (min = +0.00 V, max = +0.00 V) ALARM in10: 600.00 mV (min = +0.00 V, max = +0.00 V) ALARM in11: 816.00 mV (min = +0.00 V, max = +0.00 V) ALARM in12: 1.07 V (min = +0.00 V, max = +0.00 V) ALARM in13: 1.02 V (min = +0.00 V, max = +0.00 V) ALARM in14: 1.02 V (min = +0.00 V, max = +0.00 V) ALARM fan1: 0 RPM (min = 0 RPM) fan2: 1841 RPM (min = 0 RPM) fan4: 0 RPM (min = 0 RPM) fan5: 0 RPM (min = 0 RPM) fan6: 0 RPM (min = 0 RPM) fan7: 0 RPM (min = 0 RPM) SYSTIN: +27.0°C (high = +80.0°C, hyst = +75.0°C) sensor = thermistor CPUTIN: +57.0°C (high = +80.0°C, hyst = +75.0°C) sensor = thermistor AUXTIN0: +25.5°C sensor = thermistor AUXTIN1: +15.0°C sensor = thermistor AUXTIN2: -10.0°C sensor = thermistor AUXTIN3: +25.0°C sensor = thermistor PECI Agent 0 Calibration: +57.0°C PCH_CHIP_CPU_MAX_TEMP: +0.0°C PCH_CHIP_TEMP: +0.0°C PCH_CPU_TEMP: +0.0°C intrusion0: OK intrusion1: ALARM beep_enable: disabled acpitz-acpi-0 Adapter: ACPI interface temp1: +27.8°C (crit = +105.0°C) coretemp-isa-0000 Adapter: ISA adapter Package id 0: +68.0°C (high = +80.0°C, crit = +100.0°C) Core 0: +66.0°C (high = +80.0°C, crit = +100.0°C) Core 4: +66.0°C (high = +80.0°C, crit = +100.0°C) Core 8: +67.0°C (high = +80.0°C, crit = +100.0°C) Core 12: +67.0°C (high = +80.0°C, crit = +100.0°C) Core 16: +66.0°C (high = +80.0°C, crit = +100.0°C) Core 20: +68.0°C (high = +80.0°C, crit = +100.0°C) Core 24: +62.0°C (high = +80.0°C, crit = +100.0°C) Core 25: +62.0°C (high = +80.0°C, crit = +100.0°C) Core 26: +62.0°C (high = +80.0°C, crit = +100.0°C) Core 27: +62.0°C (high = +80.0°C, crit = +100.0°C) Core 28: +62.0°C (high = +80.0°C, crit = +100.0°C) Core 29: +62.0°C (high = +80.0°C, crit = +100.0°C) Core 30: +62.0°C (high = +80.0°C, crit = +100.0°C) Core 31: +62.0°C (high = +80.0°C, crit = +100.0°C) ushi@bigowl:~$