[Bug 93701] New: radeon: two "empty" pixel lines on left side of screen, rest of screen gets slightly squished

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=93701

            Bug ID: 93701
           Summary: radeon: two "empty" pixel lines on left side of
                    screen, rest of screen gets slightly squished
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.0-rc1
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri at kernel-bugs.osdl.org
          Reporter: frederik.hofe at gmail.com
        Regression: No

This happens in the current 4.0-rc1. 3.19 does not show this.

Basicly it looks like my resolution of 1920x1080 gets blitted into 1918,1080
with linear filtering somewhere before it gets on my screen.

When I take a screenshot with gimp, I get a normal 1920x1080 image without the
defect.

I use a Radeon 7870 (Pitcairn) -> HDMI -> Samsung S22A350H

Also I use the padoka PPA for bleeding edge mesa/llvm drivers.

glxinfo|grep OpenGL
OpenGL vendor string: X.Org
OpenGL renderer string: Gallium 0.4 on AMD PITCAIRN
OpenGL core profile version string: 3.3 (Core Profile) Mesa 10.6.0-devel
(padoka PPA)
OpenGL core profile shading language version string: 3.30
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 10.6.0-devel (padoka PPA)
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.0 Mesa 10.6.0-devel (padoka PPA)
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.00
OpenGL ES profile extensions:

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