[Bug 101412] New: [SKL] Dell XPS 9350 screen sometimes garbled after suspend/resume

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101412

            Bug ID: 101412
           Summary: [SKL] Dell XPS 9350 screen sometimes garbled after
                    suspend/resume
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: milan.plzik at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

After a suspend/resume cycle, screen of Dell XPS 9350 becomes garbled (last
tested with 4.11-rc8, linux mint/ubuntu-based) -- first few lines are correct,
the rest being more-or-less static random white lines. This state is preserved
across reboots, sometimes affecting POST screen.
A known remedy is to connect USB-C HDMI adapter and enter/leave dual-screen
mode, which sometimes tends to make the screen working again.

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