Thanks for answering for me.

I take it someone is providing you with the hardware, and you have no control over what you get?

Could happen.

For example, myself I received from the Company where I work a laptop and a phablet of 7 inches. Of course, for job. No one asked me about their hardware, thought...

BTW, I do not installed Slackware in laptop. Honestly, because its hard drive is NVMe and I do not dared to install -current for job.

And that happens somewhere in Eastern Europe, not in United Stars of Klingon, where quantum drives are usual...

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I think that the lack of support for NVMe in 14.2 is so critical that is worth for releasing a minor 14.2.1 with updates about.

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BTW, in the attached screenshot is our latest LTS Plasma5, aligned for including in Slackware-current.

Please note its wonderful icons and buttons on taskbar. Happens suddenly within several hours, with no laments in logs. Nothing.

BTW, that happens in a relative clean[1] installation of x86_64 -current, on a Phenom x4 9650 with an on-board Radeon HD3200 and 8GB RAM, but also in a Bulldozer x8 with an Radeon HD6450 and 32GB RAM.

[1] As in the Slackware packages and Plasma5, then additionally are: SMPlayer, Chromium (and PeperFlash), QupZilla, Flash Player and LibreOffice. Excluding QupZilla and SMPlayer, the rest of them are binaries from Eric's repository.

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Here is my Plasma 5 Darth! I've never had that problem with Plasma 5.

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And mine...

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@RadicalDreamer, @chrisretusn you are kind to show also your hardware specs, like Darth Vader done?

Because also myself I have a similar issue with an Athlon x2 7850 with a discrete Radeon HD4350 and 4GB RAM, while Plasma5 works perfectly on an Intel i5-650 (dual core) with on-board Intel HD video and 4GB RAM.

Then, the issue is valid, and hardware dependant. Most likelly a Mesa issue on the relative old Radeon video cards.

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Well, except k3b, the rest have substitutes in the "full" installation.

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Screen shot shows my system. Graphics card GeForce GT 730.

Other systems I run plasma on.
ASRock MB Athlon x2 processor, 8GB memory, NVIDIA graphics card.
Sony VAIO Intel Core2 Duo Processor P8600, 3GB memory, ATI Radeon HD 3470
Acer Aspire Intel Core i3-7100U Processor 4GB memory, Intel HD 620

Specs Intel i7 3770, NVIDIA GTX 1070

exactly

Thanks for confirming my issue!

BUT, if the issue is on the Mesa side, how you explain that natively shipped KWin (compositor?) from KDE4 works like a charm, while the one from Plasma5 go nuts?

desktop not refreshing after sleep mode same problem 3 years. Thats Eric's work. Great trouble shoot for the big blue.
I am sure sure Pat can handle that simple problem. I did. but every time I use his build with out my fixes it is a crappy set of icons that do not refresh.
Simple stuff Eric.

I use 14.2 on 4 computers with NVMe ssd's: 2 notebooks with Samsung ssd's and a workstation and a server with Intel ssd's.
For installation I did a minor change to the installer, described (2 years ago) in https://www.linuxquestions.org/quest...ml#post5538267