Random hibernation on Asus C425TA at 70-80 % Battery

Bug Reports Firmware Bugs
1

I need some help on a random hibernation on my Asus C425TA at 70-80 % battery level. This chromebook was put on full-ROM Mrchromebox firmware and LMDE 6 in late July 2024. I believe the firmware should be 2405. I spent a long time in making audio working with chrultrabook audio setup (kernel 6.6.43) in July and August.

I upgraded LMDE many times according to Mint upgrade cycle. (I prefer using LMDE kernel when there is no need for audio support for security reasons.) But I noticed that once I upgraded the firmware from 2405 to 2408 a fews day (around 15 October 2024) after the LMDE upgraded to Debian 6.1.112 (4 October), the battery problem occurred. The Asus chromebook became erratically hibernated at around 70-80 % batter level. It occured to me 2 times already during a normal Intenet usages. Telltale symtom was the battery warning popup at 0 % and automatically hibernated immediately.

I plugged the power right after the hibernation, and tried bringing up the Asus. Surprisingly, the battery level reported at 70-80 %.

I regularly plug in the power supply only when the battery leve reaches 20 % (and charge until it reaches 100 %).

I did not find any unusual events occured in var/log/syslog prior to the hibernation.

Is there a possibility to downgrade Leona (Asus C425TA) firmware to version 2405?

Sorry for a long description, and thank you for your support.

2

Update on 3 December.
Since I suspected the firmware might be the problem. I reverted the OS to ChromeOS once more time, and found out that the problem was caused by hardware problems. First the power supply was erratic as mentioned earlier in the forum. Then, the mouse moved weirdly by moving ups and downs and clicked by itself. These behaviours were duplicated in the ChromeOS which I have reinstalled (I tried remove touchpad cable - still the problem existed). Next, I wanted to return to Linux and I have reinstaledl Mrchromebox firmware (14 September) with success. But I cannot now reinstall Linux as the mouse moved erratically.

The hardware problem might be caused by the overheat I have done during the 3 hour-long compilation of Linux kernel on this machine in August.