batteryIcon.py read SOC and AC status from /sys/class/power_supply,
which only exists when the oneUpPower kernel module is loaded. When the
module fails to load (e.g. a DKMS vermagic mismatch after a kernel
update), the icon showed only "N/A".
Read the battery IC directly over I2C (bus 1, addr 0x64, regs 0x04 and
0x0E -- the same registers oneUpPower.c uses) via smbus2. force=True
bypasses the I2C_SLAVE busy check so the read still works whether or not
the kernel module has claimed the address. The icon now works for an
ordinary user in the i2c group, with no sudo and no kernel module.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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