Results 1 to 6 of 6

Thread: GPU Installation: Desktop Does Not Load Unity Afterwards

  1. #1
    Join Date
    Mar 2010
    Location
    MI, United States
    Beans
    109
    Distro
    Ubuntu 14.04 Trusty Tahr

    Cool GPU Installation: Desktop Does Not Load Unity Afterwards

    I've got a weird problem after installing a new GPU in my desktop. Everything goes awesome until I log into Ubuntu. After I type in my password and log in, all that shows is my wallpaper and mouse cursor: there is no panel or unity dash. I can move my cursor around the screen, but a right-click does not trigger the usual cursor menu. Keyboard shortcuts also do not work. Before I installed the GPU, I did the usual apt-get update and apt-get upgrade, so everything not-GPU-related should be up to date.

    Isn't this weird? I was expecting either everything to work or nothing to work at all, but what happened was somewhere in between. I'm guessing there's a little, trivial thing I overlooked or forgot to do.

    Previously, I just had an APU, and now I've added a GPU into a PCI slot. So both an APU and a GPU are running. (They're compatible with each other too; I checked.) I also installed a new power supply at the same time, but I doubt that would make a difference.

    Any ideas before I do a fresh install? Keep being awesome, Ubuntu men.

    Here's my tech specs:
    OS: Ubuntu 14.04 64 bit
    APU: AMD Kaveri A10-7850K
    GPU: AMD Radeon HD7970 (Sapphire)
    RAM: 8GB
    Laptop: ASUS k53e, Intel i5 2410M CPU, 120GB Samsung SSD - Ubuntu 14.04 (64 bit) and Windows 7 (64 bit)
    Desktop: ASUS A88X motherboard, AMD Kaveri A10-7850K APU, AMD Radeon HD7970 GPU, 8GB Mushkin RAM, 250GB Samsung 840 SSD - Ubuntu 14.04 (64 bit)

  2. #2
    Join Date
    Jun 2006
    Beans
    514

    Re: GPU Installation: Desktop Does Not Load Unity Afterwards

    Found this online:

    I had a similar problem, I solved it by switching in terminal (CTRL+ALT+F1) then removing the configuration file ~/.config/dconf/user like this :

    sudo service lightdm stop
    rm ~/.config/dconf/user
    sudo service lightdm start

    What this does is causes the OS to create a new desktop configuration for the user. This will reset your settings to defaults.

  3. #3
    Join Date
    Jun 2010
    Location
    London, England
    Beans
    6,941
    Distro
    Ubuntu Development Release

    Re: GPU Installation: Desktop Does Not Load Unity Afterwards

    And what video driver did you have activated before you made the hardware change? An open source video driver or a proprietary video driver? Which adapter is running? The APU or the GPU?

    Regards.
    It is a machine. It is more stupid than we are. It will not stop us from doing stupid things.
    Ubuntu user #33,200. Linux user #530,530


  4. #4
    Join Date
    Mar 2010
    Location
    MI, United States
    Beans
    109
    Distro
    Ubuntu 14.04 Trusty Tahr

    Cool Re: GPU Installation: Desktop Does Not Load Unity Afterwards

    Quote Originally Posted by mooreted View Post
    Found this online:

    I had a similar problem, I solved it by switching in terminal (CTRL+ALT+F1) then removing the configuration file ~/.config/dconf/user like this :

    sudo service lightdm stop
    rm ~/.config/dconf/user
    sudo service lightdm start

    What this does is causes the OS to create a new desktop configuration for the user. This will reset your settings to defaults.
    Choice as! I already did a clean install of Ubuntu, but I'm still having problems getting the drivers from AMD's website to work. I'll try that out tonight. I'm guessing that'll work cause right now my problem is that, after I login, the xserver crashes and resets itself back to the login screen. So basically it's the login that never ends.

    Quote Originally Posted by grahammechanical View Post
    And what video driver did you have activated before you made the hardware change? An open source video driver or a proprietary video driver? Which adapter is running? The APU or the GPU?

    Regards.
    I can't remember exactly. I know I was using fglrx-updates for a bit, but I think I installed the 12.4 Catalyst driver from AMD's website.

    Which adapter exactly? Like which one my monitor is connected to? My HDMI cord is plugged into the GPU. It doesn't seem to work if I plug it into the HDMI port on the motherboard while the GPU is installed.

    Thanks for the help, men!
    Laptop: ASUS k53e, Intel i5 2410M CPU, 120GB Samsung SSD - Ubuntu 14.04 (64 bit) and Windows 7 (64 bit)
    Desktop: ASUS A88X motherboard, AMD Kaveri A10-7850K APU, AMD Radeon HD7970 GPU, 8GB Mushkin RAM, 250GB Samsung 840 SSD - Ubuntu 14.04 (64 bit)

  5. #5
    Join Date
    Jul 2008
    Location
    The Left Coast of the USA
    Beans
    Hidden!
    Distro
    Kubuntu

    Re: GPU Installation: Desktop Does Not Load Unity Afterwards

    Hello!

    By default, Ubuntu installs without the file /etc/X11/xorg.conf. The open source driver does not need that file as it used to.

    However, when you install a proprietary driver, that file is required. In your case it is especially necessary because you have multiple GPUs. I'm going to assume for the moment that you have a clean install -- and only one install -- of the fglrx driver.

    For AMD/ATi GPUs (in your case more than one), that file is created by issuing the following command:

    Code:
    sudo amdconfig --adapter=all --initial
    There are posts aplenty saying this is no longer necessary, but given the number of times I have had to help people out by doing this I am convinced it still is.

    Since you are unable to reach a GUI, you will probably have to go to Recovery mode to reach the command line.

    (The following is from memory -- probably faulty):

    To do that, press and hold SHIFT (can't remember if it's left or right SHIFT at the moment). That will bring you to the GRUB menu. Select "Advanced Options". Under that, select Root. At the root prompt, mount your system in read/write mode

    Code:
    mount -o remount,rw /
    You may now issue the command, but you need not include the sudo. So:

    Code:
    amdconfig --adapter=all --initial
    Reboot and let us know what the result is.

  6. #6
    Join Date
    Mar 2010
    Location
    MI, United States
    Beans
    109
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: GPU Installation: Desktop Does Not Load Unity Afterwards

    Quote Originally Posted by QIII View Post
    Hello!

    By default, Ubuntu installs without the file /etc/X11/xorg.conf. The open source driver does not need that file as it used to.

    However, when you install a proprietary driver, that file is required. In your case it is especially necessary because you have multiple GPUs. I'm going to assume for the moment that you have a clean install -- and only one install -- of the fglrx driver.

    For AMD/ATi GPUs (in your case more than one), that file is created by issuing the following command:

    Code:
    sudo amdconfig --adapter=all --initial
    There are posts aplenty saying this is no longer necessary, but given the number of times I have had to help people out by doing this I am convinced it still is.

    Since you are unable to reach a GUI, you will probably have to go to Recovery mode to reach the command line.

    (The following is from memory -- probably faulty):

    To do that, press and hold SHIFT (can't remember if it's left or right SHIFT at the moment). That will bring you to the GRUB menu. Select "Advanced Options". Under that, select Root. At the root prompt, mount your system in read/write mode

    Code:
    mount -o remount,rw /
    You may now issue the command, but you need not include the sudo. So:

    Code:
    amdconfig --adapter=all --initial
    Reboot and let us know what the result is.
    Thanks QIII. I never got to try your suggestion unfortunately because I went ahead and reinstalled Ubuntu. Your suggestion probably would have been WAY easier.

    The legacy driver worked great after I reinstalled Ubuntu, but a program I wanted to run wouldn't work with that driver. The proprietary drivers were giving me some trouble too, so it was a bit of a battle. I tried installing the 12.4, 12.6, 12.8, and 14.4 AMD Catalyst drivers, and all of them had problems. But ironically, the 14.6 Beta driver works amazing. Who would have thought?
    Last edited by GreenRaccoon; July 19th, 2014 at 07:09 PM. Reason: /touch this
    Laptop: ASUS k53e, Intel i5 2410M CPU, 120GB Samsung SSD - Ubuntu 14.04 (64 bit) and Windows 7 (64 bit)
    Desktop: ASUS A88X motherboard, AMD Kaveri A10-7850K APU, AMD Radeon HD7970 GPU, 8GB Mushkin RAM, 250GB Samsung 840 SSD - Ubuntu 14.04 (64 bit)

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •