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List:       kde-bugs-dist
Subject:    [plasmashell] [Bug 368838] plasmashell memory leak when slideshow is used for wallpaper/media frame/
From:       Ovidiu Chi <bugzilla_noreply () kde ! org>
Date:       2018-05-17 12:40:48
Message-ID: bug-368838-17878-2edIUS0Qqc () http ! bugs ! kde ! org/
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https://bugs.kde.org/show_bug.cgi?id=368838

--- Comment #117 from Ovidiu Chi <metalktulu@gmail.com> ---
> I am running a slideshow of 2560x1600 images every 2 seconds with QSG_RENDER_LOOP=basic

@Matt, You'd have to start the slideshow then, after a little while(a few
seconds), change the duration (e.g. from 3s to 2s).

I did some more tests.
I set `export QSG_RENDER_LOOP=threaded` in
`~/.config/plasma-workspace/env/env.sh` and logged back in.
I cannot reproduce the problem anymore. The memory either doesn't increase or
rises very little and gets freed afterwards. Everything looks stable.

I then set `export QSG_RENDER_LOOP=basic` in the same file and I could
reproduce again.
So it seems Kubuntu 18.04 is set to `basic` by default. I entered `QSG_INFO=1
plasmashell` in the terminal to find out the value, but nothing is displayed.

I don't know if the behavior is the same on all graphic cards.
If someone is able to test this out, great, otherwise it will be another tweak
I need to write down.

System details:
CPU: Intel i7-6700HQ (8) @ 3.500GHz 
GPU: Intel HD Graphics 530 
GPU: NVIDIA GeForce GTX 960M 

OpenGL renderer string: Mesa DRI Intel(R) HD Graphics 530 (Skylake GT2) 
I have not installed the Nvidia drivers.

I've set GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nouveau.modeset=0" in
`/etc/default/grub` so I can log in, shut down and suspend the laptop properly.

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