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Terminal Garbled/Unusable - Win10 Firefox (latest)



  • When I open a terminal it looks like this:
    2020_09_30_13_31_09_Terminal.png

    It's not my dark background and light text extension for sure, as I disabled it and it still happens.
    Not sure what else could be causing this.
    uBlock Origin is disabled on this domain.


  • App Dev

    Not happening for me, on MacOS, with Firefox latest.

    Is it happening only for this one app, or for all of them ?



  • @mehdi
    It's on all of the apps. I have to switch to another browser to see what I'm doing.

    I can type out commands just fine but output is all garbled.

    The file manager also doesn't display contents of files when clicked on. blank screen. Probably related.


  • Staff

    These might be two different issues I think. The filemanager uses the monaco text editor, while the terminal is using xtermjs.

    For the terminal, this could be a regression since the last update to the latest xtermjs version. Anyways would be good if you could triage this first to see which OS/browser combination is affected. At least I cannot reproduce this here for a proper bug report upstream.

    Issues would be at https://github.com/xtermjs/xterm.js/issues

    Since you mention Firefox on Win10, they enabled webrender there, so one test could be to go into about:config and set gfx.webrender.all to false, then restart the browser and check the terminal again.



  • Since you mention Firefox on Win10, they enabled webrender there, so one test could be to go into about:config and set gfx.webrender.all to false, then restart the browser and check the terminal again.

    This is already set to false.


  • Staff

    So, is it garbled on all browsers or just Firefox latest? What does latest mean (doesn't about:config show some version?)



  • Since I had just updated FF to 81.0 it's the latest.

    Now there looks to be 81.0.1 and will try it out.



  • Quite happy with FF Nightly and the new WebRender Experimental setting, seems to be faster. Dunno if it helps here but might help to see if it's fixed in up-coming versions or not.


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