[Bug 91508] New: [i915] External monitor doesn't work resuming from screen saver

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91508

            Bug ID: 91508
           Summary: [i915] External monitor doesn't work resuming from
                    screen saver
           Product: xorg
           Version: 7.7 (2012.06)
          Hardware: Other
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/intel
          Assignee: chris at chris-wilson.co.uk
          Reporter: jim at ferrypath.org.uk
        QA Contact: intel-gfx-bugs at lists.freedesktop.org

I'm using a ThinkPad T540p, docking station, two identical external monitors
(HP LP2065), wired through the VGA (D-SUB) and DVI docking station ports. 
Latest Fedora 22.  XFCE.

Usually, I only use the external monitors for output.

When the screensaver kicks in (or when I run 'xset s activate', for example),
both monitors correctly go into power saving mode.

When I then move the mouse, the RHS monitor (connected through DVI) wakes up
and displays picture normally.  The LHS monitor (connected through the VGA)
does not wake up at all.  I have to manually disable the LHS monitor using
xfce4-display-settings, then manually re-enable it before it wakes up again.

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