I wanted to let you know that I am experiencing very similar behaviour on Kubuntu 20.04 after updating from 18.04 to 20.04, and I have my doubts that it's related to Mutter. For now I can confirm that I have an issue on KDE Plasma - to be able to paste (middle mouse click, Ctrl+C/V or Copy/Paste context menu options), I have to copy the same text twice, in one of the ways described below: 1. select text (ie. double click it), then click anywhere to lose focus from it, then select exactly the same text again - then I am able to paste with middle mouse button; or: 2. when text is already selected, I need to hit Ctrl+C twice, then I can paste it with Ctrl+V. Above is suspiciously close to what Davide mentioned above in comment https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1879968/comments/3 and that's why I decided my problem is probably related.
My suspicion - this may be related to some application I use. On KDE this issue manifests almost right away after logging in now, but there's a short period after logging in, when it doesn't happen yet. Maybe I've got something in autostart that triggers it. On other environments (Openbox, LXQT and Gnome Shell) I did not experience this problem, however I did test only for a minute. My plan for next few days is to switch to LXQT and wait for the problem to happen again, and let you know. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1879968 Title: copy/paste still sometimes fails in LibreOffice on mutter 3.36.2 Status in Mutter: Unknown Status in mutter package in Ubuntu: Confirmed Bug description: In Ubuntu 19.10 and 20.04 there was a bug that caused copy and paste operations to fail pretty often: the text that was pasted was not the text that was just copied. See the long discussion at bug #1852183. The bug was recently marked closed, since the package mutter - 3.36.2-1ubuntu1~20.04.1 landed in focal-updates and makes the bug occur much less frequently. Unfortunately the bug still exists, and is not difficult to reproduce. I am running Ubuntu 20.04 and have the new 3.36.2-1ubuntu1~20.04.1 version of mutter. I just opened two LibreOffice Writer windows side by side, and repeatedly selected some text in the left window, copied it, then attempted to paste it into the right window. In my experiment, approximately 1 in every 20 paste operations failed: it did not paste the text that was just copied, but instead the text that was copied before that. Now, an error rate of 1 in 20 may not seem so bad. On the other hand, if you spend all day writing a document and copy and paste dozens of times during the day, then you may hit this bug multiple times per day (as I have been recently), which is a significant annoyance. I tested in LibreOffice since that is where I have seen the bug most often, but I have also seen it occur in other applications as well. To manage notifications about this bug go to: https://bugs.launchpad.net/mutter/+bug/1879968/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
