Recent answers to [firefox 89 and greater] Can't enable Legacy OpenGL compositorhttps://support.mozilla.org/km/questions/13404512021-08-22T07:18:28-07:00It is false.
to enable the older OpenGL renderer with firefox 89+, you must set :
gfx.webrender2021-08-22T07:18:28-07:00hamelg1https://support.mozilla.org/km/questions/1340451#answer-1437428<p>It is false.
</p><p>to enable the older OpenGL renderer with firefox 89+, you must set&nbsp;:
gfx.webrender.force-disabled = true
layers.acceleration.force-enabled = true
</p><p>However, it will not be possible after v92&nbsp;:
<a href="https://wiki.mozilla.org/Platform/GFX/WebRender_Where#Linux" rel="nofollow">https://wiki.mozilla.org/Platform/GFX/WebRender_Where#Linux</a>
</p>I found some information here .
There does not appear to be any way to turn it off. That is a bit of2021-08-22T05:57:16-07:00hamelg1https://support.mozilla.org/km/questions/1340451#answer-1437411<p>I found some information <a href="https://linuxreviews.org/Firefox_Is_Making_WebRender_The_Default_Rendering_Engine_On_Linux_This_Month_And_There_Is_A_Facelift_Coming_In_May" rel="nofollow">here </a>.
</p><p><em>There does not appear to be any way to turn it off. That is a bit of a shame because it means that GNU/Linux users no longer have the option of enabling the older OpenGL renderer by flipping layers.acceleration.force-enabled to true. That switch does absolutely nothing in Firefox 88+. The OpenGL renderer was never made a default on GNU/Linux even though it was much better than the "Basic" rendering Firefox has defaulted to on GNU/Linux until now, so it is hard to guess if they intentionally removed it as an option or if it is just a unfortunate side-effect of they way they are force-enabling WebRender. </em>
</p><p>I understand the opengl renderer has been removed since v89. If it is true, what is the alternatives to the <a href="https://wiki.archlinux.org/title/Firefox#Tearing_video_in_fullscreen_mode" rel="nofollow">tearing workaround</a> &nbsp;?
</p>I still have the issue with firefox 91.
You can take a look at the about:support of my mediacenter h2021-08-22T04:29:03-07:00hamelg1https://support.mozilla.org/km/questions/1340451#answer-1437404<p>I still have the issue with firefox 91.
You can take a look at the about:support of my mediacenter here&nbsp;:
<a href="https://app.box.com/s/dina3cf1fqi4sr8yzxvjeewf7iz6sarc" rel="nofollow">https://app.box.com/s/dina3cf1fqi4sr8yzxvjeewf7iz6sarc</a>
anyone can help me&nbsp;?
</p>I've checked the firefox-nightly-91.0a1.20210614215408. It doesn't fix my issue.
2021-06-15T04:53:47-07:00hamelg1https://support.mozilla.org/km/questions/1340451#answer-1421769<p>I've checked the firefox-nightly-91.0a1.20210614215408. It doesn't fix my issue.
</p>See also this bug (fixed for 91).
1715902 - Refuse WebRender on Linux if GL context backed by softw2021-06-14T07:25:22-07:00cor-elhttps://support.mozilla.org/km/questions/1340451#answer-1421527<p>See also this bug (fixed for 91).
</p>
<ul><li>1715902 - Refuse WebRender on Linux if GL context backed by software driver
</li></ul>no, it doesn't help :(
2021-06-14T06:57:49-07:00hamelg1https://support.mozilla.org/km/questions/1340451#answer-1421515<p>no, it doesn't help&nbsp;:(
</p>What about gfx.webrender.software?
2021-06-13T04:35:13-07:00TyDraniuhttps://support.mozilla.org/km/questions/1340451#answer-1421239<p>What about <em>gfx.webrender.software</em>?
</p>The settings gfx.webrender.software.opengl = true does nothing. Compositing stays on webrender "(sof2021-06-13T03:34:56-07:00hamelg1https://support.mozilla.org/km/questions/1340451#answer-1421223<p>The settings gfx.webrender.software.opengl = true does nothing. Compositing stays on webrender "(software)".
</p>I'm not linuxy and this may be our bug, but try to set gfx.webrender.software.opengl = true (restart2021-06-12T23:42:32-07:00TyDraniuhttps://support.mozilla.org/km/questions/1340451#answer-1421167<p>I'm not linuxy and this may be our bug, but try to set <em>gfx.webrender.software.opengl</em> = <strong>true</strong> (restart required).
</p>