Hello, I recently upgraded my computer to Fedora 28 and experienced some strange behaviour with the cinnamon deskop when having two screens. On the second screen there was a black "border" around windows (eg terminals) that was flickering and expanding eg when the mouse was moving....
This was somewhat unpleasant but manageable... Today, it started bothering me a little, so I did a little search and found (rather easily once I had the right keywords): https://fedoraproject.org/wiki/Changes/VA-API_1.0.0 which clearly states that for intel graphic cards, it is necessary to install libva-intel-driver which is only available from rpmfusion-free. In my case, it was not installed, so I guess the troubles were coming from the software rendering... What I find strange is that fedora 28 depends (in my configuration with the two external screen configuration, which is probably not that common) on something which is outside it repositories to properly function. And the information on this new dependency is not very explicit (eg in the release notes as far as I can tell). I just wanted to share this small glitch for others that might have encountered the same problem and in the hope that this situation can improve so that it become invisible to the end-user. For example, can the rpm migrate to fedora repos since it's free and the proper dependency is added, so that it is installed by default with desktops (or the desktops that need it) ? Or otherwise, fix the software rendering (which is probably more difficult and more work). Otherwise Fedora 28 is so far a great vintage... Tahnk you for all the great work. Theo.
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