I had blacklisted the nouveau driver, and definitely had pixels up, so I know the nvidia driver was doing (some of) its trickery. I know to recompile/reinstall the driver whenever the kernel was updated, but I don't always do kernel updates all the time (ie: lock the package until I'm darn good and ready to perform a reboot) ... so I had not deemed it necessary to do anything with the video driver. Your mention of Mesa lead me to reassess that assumption ;) After downloading and installing the latest drivers, presto, I'm back to my happy, compositing, KDE5 environment. Sorry LXDE, nice to know you. Thanks, Wolfgang for your hints there! Cheers, Ken On 06/21/2015 12:34 PM, Wolfgang Bauer wrote:
Am Samstag, 20. Juni 2015, 11:05:44 schrieb Ken Savage:
Are there packages from kde4 that really should be blacklisted and purged from a KDE5 + Plasma install? Anything people can see from the stack traces that could hint at a solution?
Well, this rather looks like a graphics driver problem to me. nvidia is mentioned in the stack traces, so you apparently have that one installed. But is it working/are you using it?
Check with "glxinfo | grep render" (package Mesa-demo-x) , or check the Xorg.0.log.
I hope you are aware that you need to recompile the kernel module after each kernel update... ;-)
Background: nvidia replaces some system libraries with its own, incompatible, versions which breaks Mesa (including its OpenGL software renderer). If you are not using nvidia when it is installed, applications using OpenGL won't work therefore. And Qt5 does make use of OpenGL for certain things.
Kind Regards, Wolfgang
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