2 days into the downgrade I have flashing, so it’s something else The flashing can be provoked by adding another 50 Chromium tabs, so it is related to the amount of drawn graphics objects
The flashing in Chromium is because as you hover over tabs and bookmarks, Chromium is to show a tooltip. This no work and instead Chromium flashes black squares intermittently in various parts of the UI. It seems flashing depends on what is visible at the moment. I don’t know why slideshare causes static flashing, but after 2 days, that site hasn’t started to flash yet. It did so after 6 - 8 days of uptime, and at that time GNOME Shell may freeze on any usual activity. My last freeze was triggered by playing a 1080p youtube video. That video normally plays fine, but with increased flashing, it triggered a freeze. The other interesting thing is what software is sending SIGTRAP to GNOME applications? The user has very few processes so some other resource has been depleted. SIGTRAP is supposed to launch the debugger, if there is no debugger that becomes a crash creating files in /var/crash. By calculating backwards the problem appeared to start 2017-01-11, and the mutter upgrade was 2017-01-09. It does not seem to be an adequate conclusion. This is likely going to be a problem in GNOME 3.22. The bugs they give us in GNOME 3.24 on 2017-03 are hopefully going to be different. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1658350 Title: Chromium Shows Flashing Black Squares in GPU Rendering To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-gnome/+bug/1658350/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
