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IdeaPad Y470 Brightness Toggle Problem


Unit should be shipped with intel graphics driver, so that the FN + Up/Down will properly work with the on-screen display correctly moving from right to left.


Affected configurations

The symptom above may occur to the following systems:

Lenovo Y470



If you have upgrade Display Adapter from the Intel web page to, the on-screen display no longer works, it freezes, although the screen brightness changes. If we roll back the driver to 2342, the on-screen brightness display will again move as normal.


  • Alias ID: IN20121116-001
  • Document ID: HT075864
  • Last Updated :3/26/2014
  • (c) 2014 Lenovo