23rd November 2017, 3:43
(12th July 2017, 6:16)kdemeoz Wrote: Given your answer, i decided to just go ahead & manually list below the Plasma/KWin settings i routinely use [ever since Mint 17 KDE4] - these have become a standard, important, part of my workflow, & i'm not prepared to dump them [ie, if a distro can't reliably support them, then i need to find another distro].
Compositor = OpenGL2.0 or 3.1 [if the distro is crash-susceptible, neither of these is better].
Desktop Effects = Zoom, Fade, Fall Apart, Glide, Login, Maximise, Morphing Popups, Scale In, Screen Edge, Sheet, Sliding Popups, Thumbnail Aside, Wobbly Windows, Logout, Magic Lamp, Dialogue Box Parent, Slide Back, Desktop Cube Animation, Desktop Cube, Desktop Grid, Flip Switch, Present Windows.
Screen Edges = Top LH Corner is Desktop Grid; LHS is Present Windows, Current Desktop; Bottom LH Corner is Activity Manager; Bottom is Desktop Grid [yes, that's deliberately a duplication, as the other one often stops working (in Maui; never in oS TW)]; Bottom RH Corner is MinimiseAll/ShowDesktop; RHS is Present Windows, All Desktops; Top RH Corner is Desktop Cube - Cube.
Window Management = DEactivate both "Maximise windows by dragging..." & "Tile windows by dragging...".
Other Settings = Switch desktop on edge: Only when moving Windows.
Virtual Desktops = 9, with 3 rows [ie, giving a 3x3 grid].
Activities = n/a... the same KWin crashes happen in my Test Scenario [on the susceptible distros] regardless of me setting these as 1, 2 or 3.
Please note this new info:
This morning, following on from your suggestion yesterday for me to try booting from Maui LiveUSB [which sadly proved that the "real" Maui KWin crashes under my specific test scenario* ALSO happened here, Live], i remembered i have some older other Plasma5 ISOs from last year or earlier this year (ie, NOT recent Plasma versions], so i burned them to USB & booted from them in Tower this morning. The results were interesting:
* Test Scenario: Configure KWin as above, then open various pgm/doc windows on multiple VDs, then display Desktop Grid then drag&drop individual windows from VD to VD keeping Desktop Grid displayed [the crash does not usually occur if DG is closed the instant the drop is done]. NB: Must test in "real" installations, or LiveMedia, NOT VMs [these crashes never happen in VMs].
1. KaOS [P5.8.5] - rock-solid!! Not a single KWin crash despite my rigorous test. It felt as robust as openSUSE TW does on Lappy.
2. KDE Neon [P5.7.5] - this crashed KWin as badly as Maui does, when doing my test. Frankly i was shocked at this, but then i wondered if this might make sense, given Maui uses KDE Neon for Plasma5...?
3. Mint 18 [P5.6.5] - identical KWin crashes. I can't say i was surprised, as instability was THE reason i abandoned Mint KDE last year & found Maui.
<<snip>>
Hello leszek
I don't know if you remember me, but i used to post here a lot, until i stopped using Maui several months ago due to disappointment at the problems discussed in this thread.
I feel duty-bound to now report back here with some very nice news about this protracted problem of KWin crashing when dragging windows from desktop to desktop in the Desktop Grid. I have solved it, & i thought you might like to know.
Well, i should rephrase that. I have not solved the underlying bug, but i have identified specifically what causes these tiresome crashes, & hence now i know how to workaround so that the crashes no longer occur. The bug somehow does seem to exist only in Ubuntu-16.04-based Plasma5 distros; as i wrote above, it does not occur in any of the RPM-based distros i have used & tested.
Pls note the large red bold italic font i used when i quoted my older post, above. It is specifically this desktop effect, "Fall Apart", which triggers the bug that crashes KWin. All other desktop effects, compositing, general settings, can still be used with safety. To avoid all those nasty crashes, i have now discovered that simply not using this one desktop effect, entirely avoids the problem.
I am really pleased to have finally discovered this from my ongoing testing, but now i also feel like an idiot. If i had realised this long ago i would never have needed to stop using Maui. Sigh.
