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Created attachment 1145357 [details] screenshot Description of problem: Evolution not hangs, but symptoms I see as earlier. Many spinners in the bottom panel. And on every spinner showed popup message "Release unused memory for folder 'INBOX'"
Created attachment 1145358 [details] backtraces
Created attachment 1145359 [details] evolution console output
Thanks for a bug report. I see that there are many threads trying to update the folder structure, read it from the server. There is also one thread disconnecting your IMAPx account, waiting for a lock (maybe that's the cause). The screenshot also shows an issue with .ru account, the code failed to obtain a password for it. I suppose you have it configured in the GNOME Online Accounts, thus it can be that the goa-daemon failed/crashed for some reason, then the evolution(-data-server) failed to ask the goa-daemon for the password. That all can be eventually related to an intermittent disconnect. I think the problem is the Thread 15 and Thread 16 of the Evolution waiting on each other. Namely Thread 15 holds the GCancellable lock (as part of the g_cancellable_cancel() call) and is waiting for an idle_lock, of the CamelIMAPXServer in the imapx_server_wait_idle_stop_cancelled_cb(). The Thread 16 is holding the idle_lock in the camel_imapx_server_stop_idle_sync((), where it also calls g_cancellable_disconnect(), which seems to require the global GCancellable lock as well, but that one if held by the Thread 15 already. I fixed this with the below commits, but it was too late for the 3.20.1 release, thus it's part of the next release. Created commit 53dcb98 in eds master (3.21.1+) [1] Created commit b59863d in eds gnome-3-20 (3.20.2+) [1] https://git.gnome.org/browse/evolution-data-server/commit/?id=53dcb98