Comment 16 for bug 1782984

Ok, so at least several filesystems do have this problem.

To get at the bottom of this, we need to be very careful about conflating issues together. There may be some other things that are possibly related, but let's not jump there quite yet. First we need to identify the nature of the problem. Let's stick to one particular set of symptoms triggered by a specific set of actions.

That said, many questions remain:

 1. To reproduce, what conditions are necessary and exactly what do I need to do to to make this happen?
 2. What are the actual results? I see mentions of freezing and crashing, sometimes both, but those are very different things.
 3. Is this only on upgraded versions? Do new installs have the same situation?
 4. Any errors in /var/log/syslog, `dmesg`?
 5. Any output from pcmanfm itself if run from the command line? `killall pcmanfm && pcmanfm --desktop --profile lubuntu` should do the trick.
 6. Does this only happen on real hardware or can this be reproduced on a virtual machine?

In an ideal world, this would be testable on a virtual machine and one could just boot up the live system of bionic and perform a particular set of steps and see the actual symptoms. Random things are incredibly hard (let's say virtually impossible) to fix, especially if no particular errors are shown. That said, until we can figure out the above, I've set the bug to incomplete.

I suspect the error about the conf file is a red herring, by the way. Using `strace` on pcmanfm it looks for several possible config files before it finds what it's looking for and this is not uncommon.

Not found:
openat(AT_FDCWD, "/etc/xdg/xdg-Lubuntu/libfm/libfm.conf", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/home/lubuntu/.config/libfm/dir-settings.conf", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/etc/xdg/lubuntu/pcmanfm/lubuntu/pcmanfm.conf", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/etc/xdg/xdg-Lubuntu/pcmanfm/lubuntu/pcmanfm.conf", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/home/lubuntu/.config/pcmanfm/lubuntu.conf", O_RDONLY) = -1 ENOENT (No such file or directory)

Found:
openat(AT_FDCWD, "/etc/xdg/libfm/libfm.conf", O_RDONLY) = 8
openat(AT_FDCWD, "/etc/xdg/lubuntu/libfm/libfm.conf", O_RDONLY) = 8
openat(AT_FDCWD, "/home/lubuntu/.config/libfm/libfm.conf", O_RDONLY) = 8
openat(AT_FDCWD, "/home/lubuntu/.config/user-dirs.dirs", O_RDONLY) = 12
openat(AT_FDCWD, "/etc/xdg/pcmanfm/lubuntu/pcmanfm.conf", O_RDONLY) = 12
openat(AT_FDCWD, "/home/lubuntu/.config/pcmanfm/lubuntu/pcmanfm.conf", O_RDONLY) = 12
openat(AT_FDCWD, "/home/lubuntu/.config/pcmanfm/lubuntu/desktop-items-0.conf", O_RDONLY) = 12
openat(AT_FDCWD, "/home/lubuntu/.config/pcmanfm/lubuntu/desktop-items-0.conf", O_RDONLY) = 13