[Bug 103202] New: Tearing with reverse prime (intel primary, nouveau secondary) - bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ

From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [Bug 103202] New: Tearing with reverse prime (intel primary, nouveau secondary)
Date: Tue, 10 Oct 2017 20:00:19 +0000	[thread overview]
Message-ID: <bug-103202-8800@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=103202

            Bug ID: 103202
           Summary: Tearing with reverse prime (intel primary, nouveau
                    secondary)
           Product: xorg
           Version: 7.7 (2012.06)
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: post+fdo-8yesU2pFZgY@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

I have a Lenovo P50 and I am using Debian testing with Xorg 7.7 and Linux 4.12.
 The machine has its HDMI connector wired to the built-in NVidia card GM107GLM
(Quadro M2000M).  I am calling `xrandr --setprovideroutputsorce` to make the
connectors on the NVidia card available in my Xorg session.  On the Xorg side,
both cards are using the modesetting driver.  My DE is Gnome 3.26.

With this setup, I am seeing no tearing when I run full-screen OpenGL
applications on the internal screen.  However, when I do the same on a screen
connected via HDMI, there is tearing.  I am seeing the tearing both in my
little test application (https://git.ralfj.de/gltest.git) and when scrolling in
Firefox.

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