[kde] [Bug 357376] cannot use OpenGL or compositing for desktop effects-- insists on XRender

[m00nraker via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=357376

m00nraker <m00nraker at gmx.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |m00nraker at gmx.net

--- Comment #7 from m00nraker <m00nraker at gmx.net> ---
Hi.

I can confirm this. Since Plasma 5.x I run into quite the same problems. My
NVidia graphics adapter initializes fine and is working, but I cannot activate
compositing for desktop effects. You can see it in Bill Olivers config. that
compositing in his plasmashell is set to not active.

My system:

openSUSE Leap 42.1 (x64) (updated from OBS repos)
KDE Plasma Version 5.5.5 (OBS repo)
Qt: 5.5.1
Graphics Adapter: NVidia Geforce Go 7950 GTX
NVidia-Driver: current 304.131 from nvidia-repository

Nouveau is disabled (blacklisted)

uname -a output:
Linux linux-gss9.suse 4.1.15-8-default #1 SMP PREEMPT Wed Jan 20 16:41:00 UTC
2016 (0e3b3ab) x86_64 x86_64 x86_64 GNU/Linux

rpm -qa | grep -i nvidia
nvidia-gfxG02-kmp-default-304.131_k4.1.12_1-38.1.x86_64
nvidia-computeG02-304.131-39.1.x86_64
x11-video-nvidiaG02-304.131-39.1.x86_64

NVidia initializes fine and is working.

In Plasma Systemsettings/Display/Compositor:
Enable Compositor on startup (checked)
Rendering Backend: OpenGL 2.0
OpenGL interface: GLX

qdbus org.kde.KWin /KWin supportInformation
https://paste.kde.org/pg1ped3w4/kaatmd

You can see, that the compositor is not active.

I also use sddm:

rpm -qa | grep sddm
kcm_sddm-lang-5.5.5-49.1.noarch
sddm-0.13.0-58.16.x86_64
sddm-branding-openSUSE-0.13.0-58.16.x86_64
kcm_sddm-5.5.5-49.1.x86_64

rpm -qa | grep -i mesa
Mesa-libGL1-11.0.8-137.1.x86_64
Mesa-libva-11.1.2-133.1.x86_64
Mesa-libEGL1-32bit-11.0.8-137.1.x86_64
Mesa-libGL-devel-11.0.8-137.1.x86_64
Mesa-libglapi0-11.0.8-137.1.x86_64
Mesa-libEGL1-11.0.8-137.1.x86_64
Mesa-demo-x-8.2.0-4.4.x86_64
Mesa-libGL1-32bit-11.0.8-137.1.x86_64
Mesa-11.0.8-137.1.x86_64
Mesa-libEGL-devel-11.0.8-137.1.x86_64
Mesa-libglapi0-32bit-11.0.8-137.1.x86_64
Mesa-libGLESv2-2-11.0.8-137.1.x86_64
Mesa-32bit-11.0.8-137.1.x86_64

I have this compositing-not-active problem since Plasma 5.x. No problems with
compositing with KDE SC 4.x.

My Plasma desktop feels so slow without compositing. I can switch over to using
xrender. But thats not an option, its too slow. I would like to get back
desktop effects via OpenGL.

Expected results: active compositing with OpenGL 2.0

Any idea or workaround?

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