Bay trail-M N2920 S3 DDI1_BKLTCTL

["shadow.yang" <Shadow.Yang@xxxxxxxxxxxxxxxx>]

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

Attachment: xrandr.log
Description: Binary data

Attachment: xrandr_S3.log
Description: Binary data

Attachment: dmesg.log
Description: Binary data

Attachment: dmesg_S3.log
Description: Binary data

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