[Bug 101966] New: System hangs after resume from hibernate (S4) on eM250 running kernel 4.9.38

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101966

            Bug ID: 101966
           Summary: System hangs after resume from hibernate (S4) on eM250
                    running kernel 4.9.38
           Product: DRI
           Version: DRI git
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: david.a58 at optusnet.com.au
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 133110
  --> https://bugs.freedesktop.org/attachment.cgi?id=133110&action=edit
dmesg before hibernation

This bug appears to be similar to #99669.
On resume from hibernate, after the messages about progress of the image
loading process, the display goes blank and the system is unresponsive, forcing
a hard power reset to restart.

I have found that if I do 'rmmod -f i915' prior to hibernation, then I can
blindly do 'modprobe i915' after resume and the display returns.

I am attaching four files created when executing
'intel_reg_dumper > ird_before; rmmod -f i915; dmesg > dmesg_before; echo disk
> /sys/power/state; dmesg > dmesg_after; intel_reg_dumper > ird_after; modprobe
i915'

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