[Bug 82096] New: Blank screen ater suspend with Intel Ironlake GPU

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82096

          Priority: medium
            Bug ID: 82096
          Assignee: chris at chris-wilson.co.uk
           Summary: Blank screen ater suspend with Intel Ironlake GPU
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: nalimilan at club.fr
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: 7.7 (2011)
         Component: Driver/intel
           Product: xorg

Created attachment 103913
  --> https://bugs.freedesktop.org/attachment.cgi?id=103913&action=edit
dmesg

About every 3 suspend/resume cycles, my screen remains blank; I can still SSH
into the machine. This is with an HP dv6 with an Intel Ironlake GPU (8086:0046)
on Fedora 20. When this bug does not happen on resume, the desktop works fine
except that the mouse cursor is not visible and that gnome-shell crashes
(before restarting fine).

Everything used to work fine when only using the VESA driver. Installing the
Intel driver made the problem appear.

This is a dual-GPU machine, the other card being an ATI Radeon, which is
apparently turned off according to vgaswitcheroo:
0:IGD:+:Pwr:0000:00:02.0
1:DIS: :DynOff:0000:01:00.0
2:DIS-Audio: :Off:0000:01:00.1

A weird thing that I noticed is that the GNOME Screens panel shows two
integrated displays, the second one of which is not visible.

Please ask if you need any additional information.

xorg-x11-server-Xorg-1.14.4-11
xorg-x11-drv-intel-2.21.15-7

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