Hello, I am using xmonad on Arch Linux on a ThinkPad X1 Carbon (Gen 4). Over the past few months, I have occasionally had issues where my X session suddenly ends and I am dumped back into my display manager. There is no relevant information in /var/log/Xorg.0.log.old, simply the line [ 4566.334] (II) Server terminated successfully (0). Closing log file The only relevant lines I see in the journal are: Jan 17 08:26:55 monolith lightdm[31036]: pam_unix(lightdm:session): session closed for user jschwab Jan 17 08:26:55 monolith org.a11y.atspi.Registry[31192]: XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0" Jan 17 08:26:55 monolith org.a11y.atspi.Registry[31192]: after 885 requests (885 known processed) with 0 events remaining. I finally found a 100% reproducible case, which is to launch the program audacity. I confirmed that this issue occurs using the example xmonad configuration shipped with the Arch Linux package (/usr/share/x86_64-linux-ghc-8.0.1/xmonad-0.12/man/xmonad.hs). I suspect that xmonad is at least a contributing factor, because I installed another window manager (openbox) and confirmed that the problem does not occur there. I also confirmed that the issue occurs with the xmonad-git and xmonad-contrib-git packages, which track master on GitHub, so this hasn't been fixed since 0.12. Does anyone have any suggestions on how to track down the source of this problem? Josiah P.S. This was cross-posted on the Arch Linux forums. https://bbs.archlinux.org/viewtopic.php?pid=1684595