win10 when using an external monitor, always two minutes automatic sleep.
This is a set sleep time when the system is unattended, the default is two minutes.
Solution:
1. Run the registry manager, win + r, input Regedit.exe
2. Navigate to HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ Power \ PowerSettings \ 238C9FA8-0AAD-41ED-83F4-97BE242C8F20 \ 7bc4a2f9-d8fc-4469 33eb785aaca0--b07b
3. modify attributes of a value of 2
4. Go to "control panel \ All control panel items \ power options \ edit plan settings" setting, click "change advanced power settings." In the "sleep" option will appear in the "Unattended system sleep timeout" will be modified to the default of two minutes time you want, I changed it to 5 minutes and 10 minutes.
5.'re done, you can see for yourself
Links: https://www.zhihu.com/question/39263412/answer/87430653