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Since Firefox 55, pages go blank after using mpv/vlc
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guido-pe
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Joined: 10 May 2004
Posts: 62

PostPosted: Sat Aug 26, 2017 12:11 pm    Post subject: Since Firefox 55, pages go blank after using mpv/vlc Reply with quote

Hi,

I have lately noticed a weird problem with Firefox where the pages in all open Firefox windows and tabs will go blank and stay blank after I play a video on fullscreen using MPV or VLC. The Firefox controls surrounding the page display area stay visible and working, just the page itself goes blank. If I switch tabs, I will get a loading spinner in the middle of the page, but nothing else. It appears the page is still loaded and working, just not visible, because when this happens with a Youtube page, and I click on the area of the (blank) page where the video ought to be, I can hear the video starting again. The only thing I have found that solves this is to close all Firefox windows and start a new instance. Of course, this is seriously problematic if I have been typing something in some web page I had open at that moment that I don't want to lose...

Has anyone else noticed this weirdness? Any known fixes or workarounds? Any idea where that comes from?

This is happening on two different computers of mine so far, my main desktop which uses a fairly recent AMD graphics card with the AMDGPU driver, and my notebook, a 9 years old Thinkpad with intel graphics.

In all cases, I am using Plasma 5 as the window manager on top of X (as opposed to Wayland).
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fcl
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Joined: 31 Dec 2016
Posts: 72

PostPosted: Sat Aug 26, 2017 2:54 pm    Post subject: Reply with quote

I have the same issue. As a workaround I disabled "Allow applications to block compositing" in the compositor settings.
AMDGPU, Plasma, mpv, Firefox here too..
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