Perform the following:
- Ctrl + Alt + F3.
- Login as your user.
sudo service lightdm stop
Please post the results in your original question. I'll update this answer depending on your output.
As per your comments, now that we've verified your terminal is working we need to install some tools, you may already have these:
sudo apt-get install lshw pciutils nano
Now that we have the tools, post the output of
lshw -class display and
nano -w /var/log/XOrg.0.log
Knowing your Laptop model is a Compaq 615 AMD Athlon X2 Dual Core QL-66 leads me to the official tech spec document, and the following Linux Mint Post:
ATI Mobility Radeon HD 3200 Proprietary Driver for Linux Mint 12
The big red note on that link is what you're experiencing.
During the distribution upgrade process your kernel was updated to a newer kernel. Doing so, the upgrade process was unable to use the default radeon driver for your cards, because you had the
frglx driver installed. Since your old driver is not compatible with the newer kernel, we have 2 options:
- Downgrade to the kernel your
frglx driver works with, or
- Replace the
frglx driver with the default driver and then manually install the older
I personally prefer option 2. So without further ado, I present the
- From the Command Prompt, issue a:
sudo apt-get remove --purge xorg-driver-fglrx fglrx*
sudo apt-get install --reinstall libgl1-mesa-glx:amd64 libgl1-mesa-dri:amd64 libgl1-mesa-glx:i386 libgl1-mesa-dri:i386 xserver-xorg-core
sudo dpkg-reconfigure xserver-xorg
This should get
lightdm started so you have a GUI, because we need a browser to go to the Legacy AMD Driver Download Page and Download Legacy Version 13.1 for ATI Radeon Series 3xxx. If something failed, and you have no GUI, issue:
sudo apt-get install wget && wget http://www2.ati.com/drivers/legacy/amd-driver-installer-catalyst-13.1-legacy-linux-x86.x86_64.zip
Save this for later, as this driver only works for kernels where the version is <= 3.4.0. Since the Ubuntu Kernel is now >= 3.13.0, we will run into the same issue again. This leaves us 2 options:
Manually Download the last available release of the 3.4 Kernel for Ubuntu Manually. If you choose this option Download and install every
.deb file in that directory, along with the patches. Note: Using this option prevents you from upgrading to any kernel above Debian 3.4.105 during system updates!
In exchange for a permanently downgraded kernel, you may now install the legacy
frglxdriverby unzipping the file above. Be sure to use
chmod +x on the extracted file.
Install the in-kernel Radeon Driver. This was done in step 1 of the Resolution Section. You can now delete
/etc/X11/xorg.conf if you still have one. In exchange for the in-kernel driver, you can continue upgrading to newer kernels as they come out.
X Troubleshooting - Ubuntu Wiki - Purging frglx
The definitive guide to proprietary AMD graphics drivers
Ubuntu Wiki - Radeon Driver