I have some additional information regarding the crash. I use a samba share with mp3fs on it. This is a file system that transfers files to mp3 upon access (https://khenriks.github.io/mp3fs/).
Janos Verebes wrote that PCmanFM does not crash while performing actions. I have made the experience that it does crash the connection to the file system while copying from that special file system. This results in a broken mount point on the samba share - broken in the sense that "ls -all" shows "?????" on permission rights and user/group. I have then to unmount it and mount it again. I am not 100% sure if the file system/mount point crashes because of PCmanFM, though. PCmanFM does not crash in the sense that the UI gets unresponsive. But I have the feeling both isses are related. I never had troubles using mp3fs before upgrading to 18.04. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1782984 Title: PCManFM crashes frequently on Lubuntu 18.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pcmanfm/+bug/1782984/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs