[Intel-gfx] Bay trail-M N2920 S3 DDI1_BKLTCTL

[shadow.yang]

Hi Intel:



The system platform is Bay trail-M N2920.
The DDI1_BKLTCTL has output at S3 resume on WIN7 /8.
but Linux ubuntu 1404 Kernel 3.19 the DDI1_BKLTCTL is no signal at S3
resume.



The xrand and dmesg file please reference the attachment.
"dmesg.log" /  "xrand.log" before enter S3.
"dmesg_S3.log" /  "xrand_S3.log" after enter S3.
We are using Legacy VBIOS.
To update the Fedora23's LiveCD,the DDI1_BKLTCTL still no output PWM.

 

Do you have suggestion for this issue?

 

Regards,

shadow

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