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lenovo_thinkpad_e490 [2019/05/05 23:45]
hankwang [Notes] how to interrupt boot
lenovo_thinkpad_e490 [2019/05/12 15:14] (current)
hankwang Refer to [[Thinkpad battery management]]
Line 37: Line 37:
 To **select a boot device** or enter BIOS setup: press ENTER immediately when the red Lenovo logo appears. You only have a fraction of a second. ​ To **select a boot device** or enter BIOS setup: press ENTER immediately when the red Lenovo logo appears. You only have a fraction of a second. ​
  
-It is possible to control the **battery charging** to extend the lifetime of the built-in battery (stop charging at 80%, start charging below 75%; most of the battery wear is due to charging from 80% to 100%). For that, install tpacpi, tpacpi-bat, and tlp. Run these commands as root: +It is possible to control the battery charging to extend the lifetime of the built-in battery (stop charging at 80%, start charging below 75%). See [[Thinkpad battery management]].
- +
-  apt install tlp git wget +
-  wget https://​github.com/​teleshoes/​tpacpi-bat/​archive/​master.zip +
-  unzip -d /tmp master.zip && cd /​tmp/​tpacpi-bat-master && ./​install.pl && cd - +
-  cp /​tmp/​tpacpi-bat-master/​tpacpi-bat /​usr/​local/​bin +
- +
-  tpacpi-bat -s start 1 75 +
-  tpacpi-bat -s stop  1 80 +
-   +
-The two tpacpi-bat commands need to be executed at reboot; you can create /​etc/​rc.local (permission 755) for that purpose.+
  
 This Thinkpad will sometimes emit a continuous beep during booting (stops when the OS is loaded). It seems to be related to a disabled SecureBoot. This Thinkpad will sometimes emit a continuous beep during booting (stops when the OS is loaded). It seems to be related to a disabled SecureBoot.
lenovo_thinkpad_e490.txt · Last modified: 2019/05/12 15:14 by hankwang