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android CTS Display Refresh Rate failing on IMX6

Question asked by Divya Singhatwaria on Oct 26, 2017

Hello,

I am working on nitrogen6x SOM version1. We have ported Android 7.1 on it and have interfaced a 7.0'' 800x480 LVDS panel. The display is up and running smoothly. We do not see any functionality issue . But when we run the  Android CTS we are facing two failures related to display. Following test cases are failing:

android.view.cts.DisplayRefreshRateTest#testRefreshRate: This is related to the refresh rate of the display. I am getting following log:

01-01 00:16:05.752  3760  3776 D DisplayRefreshRateTest: claimed 61.000004 fps, achieved 50.55673 fps
01-01 00:16:15.760  3760  3781 D DisplayRefreshRateTest: restarting
01-01 00:16:25.808  3760  3776 D DisplayRefreshRateTest: claimed 61.000004 fps, achieved 50.557114 fps
01-01 00:16:35.816  3760  3781 D DisplayRefreshRateTest: restarting
01-01 00:16:45.865  3760  3776 D DisplayRefreshRateTest: claimed 61.000004 fps, achieved 50.555187 fps
01-01 00:16:55.875  3760  3781 D DisplayRefreshRateTest: restarting

 

The achieved fps is less than than the claimed fps due to which the testcase fails.

 

The second test case is:

android.view.cts.SurfaceViewSyncTests#testVideoSurfaceViewEdgeCoverage

In this test case it makes infinite objects on the screen and calculates the failed frames. the fail ratio of the frames is higher due to which the test case fails.

 

Can anyone please help to resolve these two issues?

 

Thank in advance.

Regards,

Divya

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