Hi, On Thu, 25 Apr 2019 21:41:27 +1000 Ben Sturmfels wrote: > Apr 25 20:30:54 localhost gdm: gdm_session_set_environment_variable: > assertion 'value != NULL' failed Yeah, that one again. It might make sense to patch that so the assertion actually prints name and value passed. You can also set "debug"'s "Enable=true" in gnu/services/xorg.scm , in gdm-configuration-file , but it will only help in a limited way here. > Apr 25 20:30:55 localhost gdm: Could not start command > '/gnu/store/072cd7r7zx2fgp1v16bv2si5s435lwkj-gdm-3.26.2.1/libexec/gdm- > session-worker': Too many open files WTF. Parts of gdm have full root privileges and for it to contain simple mistakes like that is worrying. > Apr 25 20:30:55 localhost gdm: GLib: g_child_watch_add_full: assertion > 'pid > 0' failed gdm should have checked for errors before calling g_child_watch_add_full. > Apr 25 20:30:55 localhost gdm: Child process -15096 was already dead. > Apr 25 20:30:55 localhost gdm: Child process 15093 was already dead. > Apr 25 20:30:55 localhost gdm: Unable to kill session worker process WTF. I hope they don't kill the same pid twice and thus risk killing innocent bystanders that happen to reuse the pid of the dead process. common/gdm-common.c gdm_signal_pid ... yes, they do.