Bug ID: 177731
           Summary: Skylake gen6 suspend/resume video regression
           Product: ACPI
           Version: 2.5
    Kernel Version: 4.9-rc1
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Power-Sleep-Wake
        Regression: No

Created attachment 241821
Kernel config file

Intel suspend/resume regression is seen under Linux 4.9-rc1, and same config
file under Linux 4.8 works fine.

Attaching my config file for 4.9. I recompilied 4.8 with this config file and
no problem have been detected

I had this issue before at kernel 4.6, fixed on 4.7 or 4.8 (I don't remember),
now is broken again at 4.9-rc1. The specific problem is the video doesn't turn
on after resume. In past, this behavior happened after 2-3 suspensions, and may
it be fixed with a couple of suspend/resume with a random screen fix. Now the
video doesn't turn on after first suspension, and doesn't get back after doing
multiple S3-S0.

I'm sorry to not be able to provide some better information, but I can do tests
if you can tell me specifically what to do.

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