How to solve the keyboard ctrl key lockup

Causes and solutions for the Ctrl key being locked:
1. First, check if the left Ctrl key of the keyboard is broken. If it is stuck, If there is garbage, etc., you can choose to clean the keyboard. If there is no problem, please see the language bar settings - (preferences) key settings to restore the default.
2. Press the left shift key 5 times to bring up the sticky keys, then set it, uncheck it and check again. If it doesn't work, reinstall the system.

　3. 3. It may be that the contact is not good after a long time. You can change the keyboard.

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