[Nouveau] [Bug 110988] New: [NV49] Graphical issues on KDE desktop with GeForce 7950 GX2

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110988

            Bug ID: 110988
           Summary: [NV49] Graphical issues on KDE desktop with GeForce
                    7950 GX2
           Product: Mesa
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: praiogriff at gmail.com
        QA Contact: nouveau at lists.freedesktop.org

SUMMARY
Since I did a new installation of openSUSE tumbleweed on 29th March 2019, I
have severe graphical issues on my desktop:
https://abload.de/image.php?img=desktop3w4ks2.png
https://abload.de/image.php?img=desktop4myjjn.png
https://abload.de/image.php?img=desktop5xwk6d.png
https://abload.de/image.php?img=desktop6k8jb2.png

Before this new installation, everything was fine. Unfortunately, I don't know
which version the old driver had. I didn't expect such a problem so I didn't
pay attention for it. The old system was installed round about one year ago.
There the driver was locked and never updated.

Problems now appear as soon as the desktop is fully loaded.
Games like 0 A.D. or Supertux seem not to be affected or only at a lesser
extent.

STEPS TO REPRODUCE
1. installation
2. booting system

OBSERVED RESULT
- KDE-Menu is semi-transparent (see second picture:
https://abload.de/image.php?img=desktop4myjjn.png )
- Icon titles are overlapped with colored blocks (see third picture in the
upper line: https://abload.de/image.php?img=desktop5xwk6d.png )
- Program windows are overlapped with colored fields (see fourth picture:
https://abload.de/image.php?img=desktop6k8jb2.png )

EXPECTED RESULT
- Clear desktop presentation

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kernel 5.1.7-1, openSUSE tumbleweed 64-bit (current version)
(available in About System)
KDE Plasma Version: 5.16.0
KDE Frameworks Version: 5.58.0
Qt Version: 5.12.3

MY HARDWARE/DRIVER:
Motherboard: Asus P5N32-E SLI Plus
CPU: Intel Core2 Duo E8200 @ 2,66GHz
RAM: 4 GiB
Graphics card: [NV49] Gigabyte Nvidia GeForce 7950 GX2 with 2x 512 GDDR3
Graphics Driver: nouveau 
Graphics Renderer: NV49
OpenGL Version: 2.1 Mesa 19.0.5

ADDITIONAL INFORMATION
There are no problems when booting Windows XP. So I exclude defective hardware.

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