Bug#917026: xorg: All the system freezes when ejects an USB stick with Thunar

[alain <rpnpif@free.fr>]

Source: xorg
Severity: important

Dear Maintainer,

I mount a fat USB sticker with Thunar (and udisks).
All work fine.
When I eject with the arrow button in Thunar, all xorg freezes. The
mouse does not work and only a poweroff with the power button works.

Alt-Fx does not work.

No errors log in syslog.

-- System Information:
Debian Release: 9.6
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-8-amd64 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8), LANGUAGE=fr_FR.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)