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[Launchpad Bug Tracker <1376618@xxxxxxxxxxxxxxxxxx>]

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Hello,

on 27.09.2014 i did a system upgrade from ubuntu 12.04 (64bit) to ubuntu 14.04.1. LTS (GNU/Linux 3.13.0-36-generic x86_64)
(A test with the Live DVD 14.04 LTS before the dist-upgrade, was sucessfully.)
After reboot there was no GUI, only the console. After a login, doing nothing at this state, after some minutes a white screen appears. Seems to be the screensaver.
Trying tharting the GUI with "startx" there were following errors:

...
...
...
Initialializing...
Initialializing built in extension DRI2
Loading Extension GLX
(EE)
Fatal Server Error:
(EE) no screens found(EE)
(EE)
Please consult the X.Org Foundation Support
(EE) please check the log in file "/var/log/Xorg.0.log"....
(EE)
(EE) Server terminated with error (1). Closing Log File
xinit: giving up
xinit: unable to connect to x server: Connectino refused
xinit: server error

lspci -nnk | grep "VGA\|'Kern'\|3D\|Display" -A2
says:

01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] RV620/M82 [Mobility Radeon HD 3450/3470] [1002:95c4]
 Subsystem: Hewlett-Packard Company Device [103c:3600]
 Kernel driver in use: radeon

xrandr --prop
says:
cannot open Display

regards AstroPhysik

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bot-comment
-- 
LightDM Error: (EE) no screens found, after Upgrade from 12.04 to 14.04 (ubuntu 64 Bit) no GUI available
https://bugs.launchpad.net/bugs/1376618
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