Bug#812555: gnome-session-flashback (temporary) black screen

[Massimo Martelli]

Thank you for your reply, however looks like it's not enabled on my
system. Is there any kind of log or output I could check?
The only thing that came to mind was to check for X11 logs, but there's
nothing interesting there, google was no help, and besides, other
sessions work just fine, so I figured it has to be this specific
session. Also I forgot to mention, I tried creating another user and
logging that in (out of fear that some per-user configuration was to
blame), but the problem keeps happening on that new user too.

On mar, 2016-01-26 at 14:47 +0200, Alberts Muktupāvels wrote:
> Any chance that you have enabled toolkit accessibility?
> org.gnome.desktop.interface toolkit-accessibility is enabled?
> 
> If so, can you patch at-spi2-core with patch from this bug:
> https://bugzilla.gnome.org/show_bug.cgi?id=753931
> 
> 
> On Mon, Jan 25, 2016 at 2:23 AM, Maxxie <hiroghkk at gmail.com> wrote:
> > Package: gnome-session-flashback
> > Version: 3.18.1-1
> > Severity: important
> > 
> > Every time I start a gnome flashback session it just shows me a
> > black screen
> > and the mouse which can't be moved. After waiting a couple of
> > minutes the
> > session starts and it works perfectly until the logout. While the
> > screen is
> > black I'm able to ssh to my computer and even start graphical
> > programs in it
> > (tried gedit). Switching user does not trigger the problem, nor
> > does standby.
> > Other gnome sessions work flawlessly.
> > 
> > 
> > 
> > -- System Information:
> > Debian Release: stretch/sid
> >   APT prefers unstable
> >   APT policy: (500, 'unstable'), (1, 'experimental')
> > Architecture: amd64 (x86_64)
> > 
> > Kernel: Linux 4.5.0-rc1-maxxie (SMP w/8 CPU cores; PREEMPT)
> > Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
> > Shell: /bin/sh linked to /bin/dash
> > Init: systemd (via /run/systemd/system)
> > 
> > Versions of packages gnome-session-flashback depends on:
> > ii  gnome-flashback                    3.18.1-1
> > ii  gnome-panel                        3.18.1-1
> > ii  gnome-session-bin                  3.18.1.2-1
> > ii  gnome-session-common               3.18.1.2-1
> > ii  gnome-settings-daemon              3.18.2-1
> > ii  gnome-shell [notification-daemon]  3.18.3-2
> > ii  metacity                           1:3.18.1-1
> > ii  nautilus                           3.18.4-1
> > ii  notification-daemon                3.18.1-1
> > 
> > Versions of packages gnome-session-flashback recommends:
> > ii  gnome-power-manager  3.18.0-1
> > ii  gnome-screensaver    3.6.1-7+b1
> > 
> > Versions of packages gnome-session-flashback suggests:
> > ii  desktop-base      8.0.2
> > ii  gnome-keyring     3.18.3-1
> > ii  gnome-user-guide  3.18.1-1
> > 
> > -- no debconf information
> > 
> > 
> 
>