Hi! I can reproduce this bug too. System just going to freeze and does not react to keyboard. After reboot sometimes it happens again (for example while watching youtube video in vivaldi browser). Here's part of syslog attached.
** Attachment added: "syslog.1" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1664979/+attachment/4887785/+files/syslog.1 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1664979 Title: EQ overflowing. Additional events will be discarded until existing events are processed. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1664979/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs