oiaohm I just fired up AC: Unity on both Windows and Linux to check for a shadow rendering bug, and it both equally tears like hell in fullscreen without vsync.
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KWin-LowLatency: An Effort To Yield Less Stutter & Lower Latency With The KDE Desktop
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That test shows issues just with userspace disable of vsync in form. Run X11 without a compositor with vsync off in the x11 server you will see a change for the worse. You cannot even drag basic windows around the X11 screen without them tearing in that setup let alone more fancy test. Of course that does not help the Unity test..
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Originally posted by debianxfce View PostI see only tearing when moving windows fast around the Xfce desktop. Applications work fine without compositing and scrolling in the web browser does not cause tearing. So I do not use the compositor or anything that slows down system performance.
Vsync total off scrolling the web browser it will from time to time tear there as well on x11 server. The fact you said it was not tearing you have left the servers vsync on..
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Without compositor or TearFree, Xorg can only be free of tearing for fullscreen windows (because they trigger page flipping). Drag a video player window playing a juddertest video to the very top or bottom of the screen to spot the tearing in windowed mode. That has nothing to do with the chosen DE, believing otherwise is just a proof of incompetence.
That being said, I don't know why anyone should care about the tearing without compositor or TearFree. These features are there for a purpose and should function without issues (otherwise fill a bug report)...
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Originally posted by debianxfce View PostIn gnome3, kde and some others you have tearing, but not with the Xfce desktop. The Xfce desktop is light and fast without compositing and any vsync on.
Note that when Tearfree is auto, it is off normally. See man amdgpu.
If this option isn't set, the default value of the property is auto, which means that TearFree is on for rotated outputs, outputs with RandR transforms applied and for RandR 1.4 slave outputs, otherwise off.
XFCE TearFree is on unless you particularly set it off.
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Originally posted by debianxfce View PostYou invent your own theories., an example:
A property that has values auto, on and off can not be half on. Tearfree is a digital value, not analog. Wayland is garbage and will never replace X, see:
https://gitlab.freedesktop.org/wayland/wayland/issuesFor all those people who find it more convenient to bother you with their question rather than to Google it for themselves.
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Originally posted by debianxfce View Post
When running above I have a couple of centiliters tearing at the bottom of the bar. I can not see such a thing when watching TV with VLC. The Xfce desktop is light and fast, try it yourself.
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Originally posted by debianxfce View PostA property that has values auto, on and off can not be half on. Tearfree is a digital value, not analog.
Originally posted by debianxfce View PostWayland is garbage and will never replace X, see:
https://gitlab.freedesktop.org/wayland/wayland/issues
Really Wayland does not have that many bugs.
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Originally posted by debianxfce View Post
I mean the damn thing enforces pebkac to an extreme. Who ever wrote obviously never worked in an environment with more than a few people. When you get forced to enter a root password for every little thing, somebody around you is going to get that password, it's inevitable... It's fucking retarded....
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