On 04/08/2020 03:59 PM, Snidely Whiplash wrote: > When switching virtual desktops back to the one where Firefox is open, when > certain pages are displaying on the active tab, the window contents do not > repaint until moving the mouse over a mouseover effect (e.g. a hoverable link) > changes the window status. The window then shows its contents. > > This started for me with Firefox 73, got somewhat better with Firefox 74 > (could only reproduce it on one page, a specific Vbulletin forum listing) and > got worse than ever with Firefox 75. Now it happens with most pages that have > a list of hoverable links. For example Vbulletin forum listings, and even > https://www.kernel.org > > This does not happen with Fluxbox, seems to be only with TDE/twin. I can > reproduce it on both my Manjaro and Linux From Scratch systems. > > I thought maybe enabling the compositing ("composition manager") might help > with this (I build support for it, but I don't enable it) but it neither helps > nor harms. > > A previous cause of this in Firefox was "focusmanager.testmode" but that's set > to false now and not applicable. > > Anybody else seeing this behaviour, or know of any settings or command line > arguments for twin that might change this paint behaviour? > > Thanks, If I recall correctly 73 has hardware acceleration enabled on Linux by default for the first time. This will cause the problem you describe. Check the about:config page and if you have: layers.acceleration.force-enabled true You can disable it (which was the default up to that point), and see if the issue remains (may need a restart of firefox for it to take effect, I can't recall) -- David C. Rankin, J.D.,P.E. --------------------------------------------------------------------- To unsubscribe, e-mail: trinity-users-unsubscribe@xxxxxxxxxxxxxxxxxxxxxxxxxx For additional commands, e-mail: trinity-users-help@xxxxxxxxxxxxxxxxxxxxxxxxxx Read list messages on the web archive: http://trinity-users.pearsoncomputing.net/ Please remember not to top-post: http://trinity.pearsoncomputing.net/mailing_lists/#top-posting
