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Hi All,

We updated ubuntu MATE 15.04 and Lubuntu 15.04 on our PowerPC computers
(Power Mac G5 Quad and AMIGA one X1000) last week. Synaptic told us that
it want to remove xserver-xorg-video-radeon and xserver-xorg-video-ati.
But there are new versions available (xserver-xorg-video-radeon
1:7.5.0-1ubuntu2 and xserver-xorg-video-ati 1:7.5.0-1ubuntu2). Synaptic
removed both old packages and Xorg doesn't work after that. I selected
both new packages and updated them manually. After a restart I had a
black screen with a blink cursor. There aren't any error messages in the
log file '/var/log/Xorg.0.log' but I found some error messages in the
log file '/var/log/syslog':

    . Exiting.
    Mar 19 11:45:41 ubuntu systemd[1]: lightdm.service: main process exited, code=exited, status=1/FAILURE
    Mar 19 11:45:41 ubuntu systemd[1]: Unit lightdm.service entered failed state.
    Mar 19 11:45:41 ubuntu systemd[1]: lightdm.service failed.
    Mar 19 11:45:41 ubuntu systemd[1]: lightdm.service holdoff time over, scheduling restart.
    Mar 19 11:45:41 ubuntu systemd[1]: Starting Light Display Manager...
    Mar 19 11:45:41 ubuntu systemd[1]: Started Light Display Manager.
    Mar 19 11:45:41 ubuntu lightdm[20218]: initctl: Verbindung zu Upstart nicht möglich: Failed to connect to socket /com/ubuntu/upstart: Verbindungsaufbau abgelehnt
    Mar 19 11:45:42 ubuntu systemd[1]: Started Session c109 of user lightdm.
    Mar 19 11:45:42 ubuntu systemd[1]: Starting Session c109 of user lightdm.
    Mar 19 11:45:42 ubuntu lightdm[20218]: ** (lightdm:20218): WARNING **: Error using VT_WAITACTIVE 7 on /dev/console: No such device or address
    Mar 19 11:45:43 ubuntu kernel: lightdm-gtk-gre[20251]: unhandled signal 11 at 00000000 nip 6f4e61c4 lr 6f4e619c code 30001
    Mar 19 11:45:44 ubuntu org.gtk.vfs.Daemon[20250]: A connection to the bus can't be made
    Mar 19 11:45:44 ubuntu org.gtk.vfs.Daemon[20250]: g_dbus_connection_real_closed: Remote peer vanished with error: Underlying GIOStream returned 0 bytes on an async read (g-io-error-quark, 0). Exiting.
    Mar 19 11:45:44 ubuntu systemd[1]: lightdm.service: main process exited, code=exited, status=1/FAILURE
    Mar 19 11:45:44 ubuntu systemd[1]: Unit lightdm.service entered failed state.
    Mar 19 11:45:44 ubuntu systemd[1]: lightdm.service failed.
    Mar 19 11:45:44 ubuntu systemd[1]: lightdm.service holdoff time over, scheduling restart.
    Mar 19 11:45:44 ubuntu systemd[1]: Starting Light Display Manager...
    Mar 19 11:45:44 ubuntu systemd[1]: Started Light Display Manager.
    Mar 19 11:45:44 ubuntu lightdm[20381]: initctl: Verbindung zu Upstart nicht möglich: Failed to connect to socket /com/ubuntu/upstart: Verbindungsaufbau abgelehnt
    Mar 19 11:45:45 ubuntu systemd[1]: Started Session c110 of user lightdm.
    Mar 19 11:45:45 ubuntu systemd[1]: Starting Session c110 of user lightdm.
    Mar 19 11:45:45 ubuntu lightdm[20381]: ** (lightdm:20381): WARNING **: Error using VT_WAITACTIVE 7 on /dev/console: No such device or address
    Mar 19 11:45:46 ubuntu kernel: lightdm-gtk-gre[20414]: unhandled signal 11 at 00000000 nip 6f4e61c4 lr 6f4e619c code 30001
    Mar 19 11:45:46 ubuntu org.gtk.vfs.Daemon[20413]: A connection to the bus can't be made
    Mar 19 11:45:46 ubuntu org.gtk.vfs.Daemon[20413]: g_dbus_connection_real_closed: Remote peer vanished with error: Underlying GIOStream returned 0 bytes on an async read (g-io-error-quark, 0)

------------------------------------------------------------------------------

I installed Upstart again but unfortunately it didn't solve the problem
with the black screen and the blink cursor.

The temporary solution is to downgrade Xorg:

sudo dpkg -i xserver-xorg-core_1.16.0-1ubuntu1.3_powerpc.deb
sudo dpkg -i xserver-xorg-video-radeon_7.4.0-2ubuntu2_powerpc.deb
sudo dpkg -i xserver-xorg-video-ati_7.4.0-2ubuntu2_powerpc.deb

I created a package with all debs and Mesa libs for the downgrade last
week.

Download:
http://www.xenosoft.de/Xorg_and_unofficial_Mesa_for_ubuntu_MATE_15.04_AMIGA_one_X1000.tar.gz

Further information: http://ubuntuforums.org/showthread.php?t=2264322

PLEASE help us.

Thanks in advance.

Cheers,

Christian

** Affects: xserver-xorg-video-ati (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: black blink cursor radeon screen
-- 
ubuntu MATE 15.04 PPC/Lubuntu 15.04 PPC Xorg: Only black screen with blink cursor after update
https://bugs.launchpad.net/bugs/1434036
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