for what it's worth, JetBrains bug reports find that the problem is triggered by requesting grayscale anti-aliasing.
https://youtrack.jetbrains.com/issue/IDEA-350864/Idea.sh-abort-X-window -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/2060354 Title: Segfaults and assertion failures in Xorg's render/glyph.c To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/2060354/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp