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Lenovo C320 cannot save the brightness level after replugging the external power supply


It is unable to save the brightness level on Lenovo C320 when you replug the external power supply. The brightness level setting can only maintain by keeping the power supply plug-in . The phenomenon happens to both BIOS interface and Windows.


Affected configurations

The above symptom may occur to the following systems:

  • Lenovo C320/C325/C225



    This is design limitation. It is normal. As C320 has no scalar IC, OSD Brightness adjustment will be saved in EC RAM and reset to default max brightness after re-plugging AC . Please feel free to use.


    • Alias ID: ID20120807-001
    • Document ID: HT074646
    • Last Updated :3/26/2014
    • (c) 2014 Lenovo