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Thread: gnome flashback sessions black screen

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  1. #1
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    gnome flashback sessions black screen

    Is it just me? I have tested this on an old install(partially broken due to dbus and systemd issues), a semi new install(installed yesterday) and a brand new install, logging into flashback sessions hangs at a black screen.
    This behavior started about this morning.
    I lay down on my bed, looking at the stars, and starting to wonder............................................ .where the **** is my roof..

  2. #2
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    Re: gnome flashback sessions black screen

    This happens to me after today's update. I thought it was Grub2 as it was updated.
    Code:
    cavsfan@cavsfan-MS-7529:~$ grub-install -v
    grub-install (GRUB) 2.00-18ubuntu1
    But, I can confirm it is not caused by that that I can see. I am in Unity now which is unaffected.

    I cannot login to flashback though all I have is a black screen too. I can bring up a terminal with ALT+TAB+t but that is about all.
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  3. #3
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    Re: gnome flashback sessions black screen

    I believe this is from the upgrade of upstart to 1.9.1-0ubuntu5
    (not the only issue with upstart but certainly significant for flashback users

  4. #4
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    Re: gnome flashback sessions black screen

    Pretty easy to fix --
    Code:
    sudo nano /etc/upstart-xsessions
    change
    gnome-fallback
    gnome-fallback-compiz
    to
    gnome-flashback
    gnome-flashback-compiz

    Or maybe install the dummy fallback packages to match this dummy upgrade

    https://bugs.launchpad.net/ubuntu/+s...t/+bug/1217991
    Last edited by mc4man; August 28th, 2013 at 06:00 PM.

  5. #5
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    Re: gnome flashback sessions black screen

    Quote Originally Posted by mc4man View Post
    Pretty easy to fix --
    Code:
    sudo nano /etc/upstart-xsessions
    change
    gnome-fallback
    gnome-fallback-compiz
    to
    gnome-flashback
    gnome-flashback-compiz

    Or maybe install the dummy fallback packages to match this dummy upgrade

    https://bugs.launchpad.net/ubuntu/+s...t/+bug/1217991
    Thanks!

  6. #6
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    Re: gnome flashback sessions black screen

    I installed ..
    Code:
    sudo apt-get install gnome-session-fallback
    eary thismorning while doing some overclocking on one of my systems. I was not able to get Unity to work in full screen mode so I used gnome fallback. It worked just fine with (no effects). It worked for a while @ 4.002GHz in gnome-flashback (classic) but eventually became unstable during an upgrade. ( the upgrade process [unpacking/installing] caused a heavier than normal load on the cpu).
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  7. #7
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    Re: gnome flashback sessions black screen

    Quote Originally Posted by mc4man View Post
    Pretty easy to fix --
    Code:
    sudo nano /etc/upstart-xsessions
    change
    gnome-fallback
    gnome-fallback-compiz
    to
    gnome-flashback
    gnome-flashback-compiz

    Or maybe install the dummy fallback packages to match this dummy upgrade

    https://bugs.launchpad.net/ubuntu/+s...t/+bug/1217991
    Thank you for this..
    I was playing with gnome3 ppa and gnome3-staging ppa(oh noes)...that.did.not.go.well.
    After ppa-purge I was left blackscreen, and thats when I thought my whole year of tweaking on this install is done for..
    I started fresh, and encountered this problem(After I installed, I tried to chroot & upgrade, so the old install got this problem as well).
    After 2 days of endless log reading, file diffing, I magically fixed my old friend

    Yay for Thursday!
    I lay down on my bed, looking at the stars, and starting to wonder............................................ .where the **** is my roof..

  8. #8
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    Re: gnome flashback sessions black screen

    There is a new build that should fix without any mucking around
    (if one edited the upstart file then set back
    gnome-panel (1:3.6.2-0ubuntu13) saucy; urgency=low

    * Drop bin/gnome-session-flashback as it wasn't consistently used and
    caused problems with upstart user sessions. (LP: #1217991)
    * Add aliases for gnome-fallback to gnome-flashback and
    gnome-fallback-compiz to gnome-flashback-compiz.
    Here I just purged gnome-session-flashback then re-installed with new one, seems ok

  9. #9
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    Re: gnome flashback sessions black screen

    Glad I had time to give this some thought. Today I ended up being able to alt+tab+f1 into a cli session and installed gnome-session-fallback.
    Then I attempted to get the updates again and it updated fine. Then sudo service lightdm restart brought me back to the login screen
    and flashback works like a champ now. Noticed that gnome-session-fallback and gnome-session-flashback were in the updates.

    Oddly yesterday the login screen was the default Ubuntu color and today it is back to matching my background. So glad I didn't have to re-install.
    Although I was prepared to.
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  10. #10
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    Re: gnome flashback sessions black screen

    I'm too busy to follow up on this but maybe someone needs to amend the sessions here:

    https://lists.ubuntu.com/archives/ub...st/000511.html

    From: Stéphane Graber <stgraber at ubuntu.com>
    Date: 26 August 2013 09:00
    Subject: Uploading upstart tomorrow, turning on user sessions for everyone
    To: gilir at ubuntu, com at castiana, jriddell at ubuntu.com, knome at ubuntu.com,
    jbicha at ubuntu.com

    Hi,

    I talked to every one of you independently a while back about enabling
    Upstart user sessions for the desktop environment used in your flavours.

    Back then I said I'd wait a couple of weeks then switch to that by
    default, unfortunately due to other work commitments, traveling and
    conferences I never quite got to that. With Feature Freeze fast
    approaching, I'm now planning to do that tommorow unless one of you has
    a very good reason not to go ahead.

    The change I'd be pushing would basically be adding the following to
    /etc/upstart-xsessions:
    ubuntustudio
    xfce
    xubuntu
    kde-plasma
    Lubuntu
    Lubuntu-Netbook
    lubuntu-nexus7
    lxgames
    qlubuntu
    gnome
    gnome-fallback
    gnome-fallback-compiz

    All of those were tested a while back and confirmed not to cause any
    obvious regressions. Some extra testers for each flavour have been
    playing with that and so far I've not heard of any problem caused by
    this, so I'm pretty confident it should be a painless change.

    --
    Stéphane Graber
    Ubuntu developer
    I seem to recall Jeremy Bicha requesting they add "gnome-classic" but I can't find that message right now. Maybe the "flashback" sessions need to be added too

    Sorry to play hit-n-run.

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