[Pkg-lxde-maintainers] Possible bug in pcmanfm, 1m30s hang on shutdown, similar to FEDORA-2020-b41760de92

[Real Carbonneau]

Hi Andriy,

It happens under many conditions in Debian 11 Bullseye (testing) and in
some cases with Debian 10 Buster (stable) with some packages installed
from testing.

Easy to reproduce (I just did it in a KVM/QEMU)
1) Fresh install Debian 11 Bullseye Testing
2) Text-based install
3) Only choose LXDE and System Utilities (uncheck all others)
4) Reboot
5) Login
6) Plug in a USB device
7) Shutdown hangs for 1m30s
8) All subsequent shutdown and reboots hang for 1m30s, regardless if
there is a USB connected or not.
9) If a logout is performed before the shutdown, the shutdown occurs
correctly.  

Other notes:
6a) If a shutdown is performed on a fresh install before connecting a
USB device, the shutdown behaves correctly.

It seems to be related to pcmanfm, see the two bug reports here:
https://bodhi.fedoraproject.org/updates/FEDORA-2020-b41760de92
https://bugs.archlinux.org/task/66268


-- 
Kind regards,
Réal



On Fri, 2020-05-01 at 14:23 +0300, Andriy Grytsenko wrote:
>     Hello!
> 
> Real Carbonneau has written on Wednesday, 29 April, at  9:29:
> 
> > I a using Debian 10 Buster and I have a similar bug to FEDORA-2020-
> > b41760de92.  When I create a symlink from under /home/user/ to a
> > ZFS
> > mount, pcmanfm hangs (1m30s) on shutdown, but if I remove the
> > symlink
> > it does not hang and if I log out of lxde before shutdown, it does
> > not
> > hang neither (as reported in the Fedora bugfix and ArchLinux bug.
> > https://bodhi.fedoraproject.org/updates/FEDORA-2020-b41760de92
> > https://bugs.archlinux.org/task/66268
> > Neither updating systemd, the kernel nor pcmanfm to the testing
> > versions corrected the problem.
> > I have tested the following workarounds all with success:
> > -Log out of LXDE first, then shutdown
> > -Remove the symlinks in /home/user/ to a ZFS mount
> > My installation:
> > pcmanfm: 1.3.1-1
> > uname -v: #1 SMP Debian 4.19.98-1+deb10u1 (2020-04-27)
> > zfs version: zfs-0.8.3-1~bpo10+1, zfs-kmod-0.8.3-1~bpo10+1
> 
> This looks pretty strange. Does that happen only for symlink pointing
> to ZFS
> mount or that happens for any other mount as well?
> 
> With best regards,
> Anfriy.