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I have installed Ubuntu GNOME 14.04 with gnome shell version 3.12.In log-in screen there is three options : "System Default","Gnome Classic" & "Gnome". When I select "Gnome" there is no problem & I can use it flawlessly but if I select "Gnome Classic" it boots into a gray screen with a mouse pointer and nothing happened.So how can I open the "Gnome Classic".

PS: Here how to troubleshoot the Gnome Classic Session? is the same problem as of me.But there is no answer.

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  • Did you try to rename temporarilly your ~/.gnome directory and restart your session? – Philippe Gachoud May 27 '15 at 8:12
  • No I have not.But how can I do that please explain. – Bodhoday Mukherjee May 27 '15 at 8:13
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For me the following solution worked:

  1. Install the kernel

linux-image-3.15.0-031500rc2-generic_3.15.0-031500rc2.201404201435_amd64.deb

and the headers

linux-headers-3.15.0-031500rc2_3.15.0-031500rc2.201404201435_all.deb linux-headers-3.15.0-031500rc2-generic_3.15.0-031500rc2.201404201435_amd64.deb

then reboot.

  1. Install nvidia-331, bumblebee and primus

sudo apt-get install nvidia-331 bumblebee bumblebee-nvidia primus

  1. Edit the bumblebee.conf file

sudo gedit /etc/bumblebee/bumblebee.conf

line 22: Driver=nvidia line 55: KernelDriver=nvidia-331 line 58: LibraryPath=/usr/lib/nvidia-331:/usr/lib32/nvidia-331 line 61: XorgModulePath=/usr/lib/nvidia-331/xorg,/usr/lib/xorg/modules

save and reboot

From here

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Try out

  1. ctr+alt+f1 and log in
  2. sudo service lightdm stop
  3. mv ~/.gnome ~/.gnome_backup or mv ~/.config ~/.config_backup
  4. sudo service lightdm start
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  • I am using gdm instead of lightdm.Though I have tried the above commands.But nothing happens. – Bodhoday Mukherjee May 27 '15 at 12:32
  • did you try the same as above with ~/.config as askubuntu.com/questions/628468/… it solved a problem for me... – Philippe Gachoud May 28 '15 at 19:26
  • No.But today I have installed ubuntu 15.04 with gnome shell version 3.14.So there is no issue now. – Bodhoday Mukherjee May 28 '15 at 20:42

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