according to [1], any the following fixes the bug:* removing the call to /usr/bin/clear_console from ~/.bash_logout (console is cleared anyway nowadays) * replacing the call to /usr/bin/clear_console with /usr/bin/reset in ~/.bash_logout
The discussion in [1] shows more information, the bug [2] at xorg is related or a duplicate
[1] https://groups.google.com/forum/#!topic/linux.debian.user/2G71U8P8c3Q [2] https://gitlab.freedesktop.org/xorg/xserver/issues/492
