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Some noticeable screen tearing on MC23.0.10 Beta

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Rizlaw:
I have noticed screen tearing (mild amount) in both MC 22.0.108 and MC 23.0.10 Beta. Mostly on SciFi movies when film is panning up/down or left/right. I' m using a GTX1080 video card and Acer Predator 34x14 monitor (21x9 aspect ratio). I don't see this tearing if I decrease the widescreen image in MC22 or 23 by going from full screen to "normal" screen (not sure what else to call it in MC). I also don't see tearing when viewing the same films in Gnome MPV video player. I'm using the latest Nvidia 381 proprietary driver for Ubuntu Gnome 17.04.

6/23/17: I did some more troubleshooting this morning. I turned off and disconnected the second monitor (NEC 2490WUXI) and disconnected it from the computer. It has a lower resolution (1920x1200) than monitor 1, so I thought the difference in monitor resolutions might be contributing to the tearing issue. Unfortunately, this did not eliminate the problem, but it did seem to mitigate it a little bit in full screen mode (3440x1440) where the tearing is most noticeable.

BTW, on a dual monitor setup (like I use) can MC23 be on monitor 2 and playback of movies on monitor 1? I can't find any settings in MC that would facilitate this type of movie playback.

bob:

--- Quote from: Rizlaw on June 22, 2017, 08:33:05 pm ---I have noticed screen tearing (mild amount) in both MC 22.0.108 and MC 23.0.10 Beta. Mostly on SciFi movies when film is panning up/down or left/right. I' m using a GTX1080 video card and Acer Predator 34x14 monitor (21x9 aspect ratio). I don't see this tearing if I decrease the widescreen image in MC22 or 23 by going from full screen to "normal" screen (not sure what else to call it in MC). I also don't see tearing when viewing the same films in Gnome MPV video player. I'm using the latest Nvidia 381 proprietary driver for Ubuntu Gnome 17.04.

6/23/17: I did some more troubleshooting this morning. I turned off and disconnected the second monitor (NEC 2490WUXI) and disconnected it from the computer. It has a lower resolution (1920x1200) than monitor 1, so I thought the difference in monitor resolutions might be contributing to the tearing issue. Unfortunately, this did not eliminate the problem, but it did seem to mitigate it a little bit in full screen mode (3440x1440) where the tearing is most noticeable.

BTW, on a dual monitor setup (like I use) can MC23 be on monitor 2 and playback of movies on monitor 1? I can't find any settings in MC that would facilitate this type of movie playback.

--- End quote ---
I'm not sure what to say about the tearing, I've not see it.

As far as the monitor selection goes, we are starting to implement that in linux now.

InflatableMouse:
Screen tearing is more of a generic issue on Linux with the proprietary drivers, especially Nvidia. But the few AMD cards I've had, had tearing issues too.

Anyway, there is a fix. Try this from a terminalas your regular user (no sudo):


--- Code: ---nvidia-settings --assign CurrentMetaMode="nvidia-auto-select +0+0 { ForceFullCompositionPipeline = On }"
--- End code ---

Your screen will blink for a sec and come back. Test it and if it works, adjust /etc/X11/xorg.conf.d/20-nvidia.conf:


--- Code: ---Section "Screen"
    Identifier     "Screen0"
    Option         "metamodes" "nvidia-auto-select +0+0 { ForceFullCompositionPipeline = On }"
    Option         "AllowIndirectGLXProtocol" "off"
    Option         "TripleBuffer" "on"
EndSection
--- End code ---

You may have to adjust the above a bit to accomodate for current values in that file, or if you have other exotic configurations. failure to do so may result in a black screen or xorg no longer starting after a reboot. Also check there aren't any other files in that directory with conflicting settings.

Ps. make a backup of the files you change :).

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