[Bug 95363] New: blackscreen after resume from hibernation

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=95363

            Bug ID: 95363
           Summary: blackscreen after resume from hibernation
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
          Assignee: xorg-driver-ati at lists.x.org
          Reporter: d9d9 at bk.ru
        QA Contact: xorg-team at lists.x.org

Created attachment 123644
  --> https://bugs.freedesktop.org/attachment.cgi?id=123644&action=edit
dmesg

I'm using Gentoo kernel 4.5, after resume from hibernation I have black screen.
I tried two kernel versions 4.5.0-r1 and 4.5.3. In the end of dmesg after every
resume I see:
[drm:radeon_dp_link_train] *ERROR* displayport link status failed
[drm:radeon_dp_link_train] *ERROR* clock recovery failed
Does displayport means DisplayPort(https://en.wikipedia.org/wiki/DisplayPort)?
Because I don't have this in my laptop.

media-libs/mesa-11.2.2 
sys-devel/llvm-3.7.1-r1 
sys-kernel/gentoo-sources-4.5.3 
sys-kernel/linux-headers-4.5 
sys-power/pm-quirks-20100619 
sys-power/pm-utils-1.4.1-r6 
sys-power/upower-0.99.4 
x11-base/xorg-drivers-1.18-r1 
x11-base/xorg-server-1.18.3 
x11-base/xorg-x11-7.4-r2 
x11-drivers/xf86-video-ati-7.7.0

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