Comment 2 for bug 1926110

Thank you for your bug report, do you remember what packages got updated at the time the issue started (the /var/log/dpkg.log record could help figuring it out)? Could you try if starting an older kernel (https://askubuntu.com/questions/82140/how-can-i-boot-with-an-older-kernel-version) makes a difference? What videocard, driver and desktop environment do you use?