Hi.
After I updated today, the “max charge level” is gone from Power managment - advanced.
Is it under another setting now?
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I still see that on the M2 Macbook Pro 13" and KDE Plasma 6.1.3, although with an udev-rule to apply the charge limit on boot.
Does /sys/class/power_supply/macsmc-battery/charge_control_end_threshold exists? Can you read/write inot as root? What happens if you write 80 into it like echo 80 | sudo tee /sys/class/power_supply/macsmc-battery/charge_control_end_threshold?
No the file does not exist.
I get permission dnied with sudo.
echo 80 | sudo tee /sys/class/power_supply/macsmc-battery/charge_control_end_threshold
Please touch the device.
tee: /sys/class/power_supply/macsmc-battery/charge_control_end_threshold: Permission denied
80
If the file doesn’t exists writing to it won’t do anything. Does the directory exists? Can you list it contents? I don’t see how the files might be missing completely. They are potentially not writable but should exist.
Please paste the output of journalctl -k -g macsmc.
Please provide details on the device. What diud you upgrade? Fedora? or macOS?
journalctl -k -g macsmc
aug. 11 17:37:45 fedora kernel: power_supply macsmc-battery: driver failed to report constant_charge_current' property: -132 aug. 11 17:37:45 fedora kernel: power_supply macsmc-battery: driver failed to report constant_charge_current’ property: -132
aug. 11 17:37:45 fedora kernel: power_supply macsmc-battery: driver failed to report constant_charge_current' property: -132 aug. 11 17:37:45 fedora kernel: power_supply macsmc-battery: driver failed to report constant_charge_current’ property: -132
aug. 11 17:37:45 fedora kernel: power_supply macsmc-battery: driver failed to report constant_charge_current' property: -132 aug. 11 17:37:45 fedora kernel: power_supply macsmc-battery: driver failed to report constant_charge_current’ property: -132
aug. 11 17:37:45 fedora kernel: power_supply macsmc-battery: driver failed to report constant_charge_current' property: -132 aug. 11 17:37:45 fedora kernel: power_supply macsmc-battery: driver failed to report constant_charge_current’ property: -132
aug. 11 17:37:45 fedora kernel: power_supply macsmc-battery: driver failed to report constant_charge_current' property: -132 aug. 11 17:37:45 fedora kernel: power_supply macsmc-battery: driver failed to report constant_charge_current’ property: -132
Macbook pro 14" M1
macos Sequoia beta
The SMC firmware from Sequoia removed or renamed the setting used to control the charge limit. We’re looking how/if we can control that with the Sequoia SMC fw. The error messages is unrelated and will be gone in the next kernel release.
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An alternate way to implement this has been found and will be included in the next kernel update. This will allow to set custom end thresholds instead of the hardcoded 80%. We will also soon have a solution for making the setting persistent (saving it on every write and restoring it on boot).
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Excellent! Thanks to the Asahi team for all the great work you do!
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