(8th October 2016, 12:37)leszek Wrote: Yeah but as KWin in Plasma 5 uses more OpenGL Features of the graphicscard it might be a broken driver will crash it.
Broken drivers are mostly the cause for these crashes.
Try to see if xrender works OK for you otherwise you can deactivate Effects with Alt+Shift+F12 like always.
As previously explained, running with no Desktop Effects at all is not an acceptable choice for me -- at that point the justification for me staying with a KDE distro dramatically shrinks.
I'm interested in your mention of possible broken drivers. As the pic shows, theoretically i'm using the recommended & latest NVidia one, even though for reasons i cannot understand [despite your earlier kind attempt to explain to me] why the Driver Manager persists in selecting the Nouveau one. Are you implying therefore that the NVidia 370.28 might be defective? If so, would that further imply that maybe i should sequentially experiment with the 367.44, then 364.19, then 361.45.18 etc, until i find one with which using OpenGL 2.0 or 3.1 does not keep crashing KWin / Plasmashell?
Further, can the kernel be a factor here? All this time i've been using the latest one available in the repo, = 4.4.0-38. Should i begin trying older kernels?
EDIT - UPDATE: OMZ this is exasperating! Less than 60 seconds after sending this post in its original form, KWin crashed AGAIN [already a few this morning, & several last night]. That's with me using [since last night] only XRender not either OpenGL. I am now about to experiment with my first NVidia driver downgrade, from 370.28 to 367.44, & will re-select OpenGL 2.0, then will reboot. Watch this space...