This would be a little easier if you had actually included the model of the graphics card.
Type lspci in a command terminal to list all the PCI/AGP hardware installed on your machine.
You could try changing a few settings in your xorg.conf file in /etc/X11.
Before you make any changes to this file it's best to make a back up with
Then edit the file using gedit. It's sometimes best to learn and use the old style text editors like vi or nano rather than the GUI text editors (because some times you may have to boot with out the X server to fix any X config files that are corrupted)
The important sections to look for are
Make sure that Load "glx" and Load "dri" are there.
The next one is
and the most important part in this section is the "Driver" item.
If it says
then try changing it to
Save your changes and reboot (or try Ctrl+Alt+BackSpace to restart the X Server)
If I remember, I am sure that hardware acceleration is built into the mesa driver for most intel cards (this isn't the case for nVidia and ATI) and some of them are picky and may need additional options.
Your best bet to try and solve these kind of problems would be to dig around in the unbuntu forums (and if you cant find an answer make post giving as much detail as you can).
and to use LIBGL_DEBUG=verbose just add glxinfo to the end like thus
all this does is is list out the same information as glxibfo with a few extra bits.
Type lspci in a command terminal to list all the PCI/AGP hardware installed on your machine.
You could try changing a few settings in your xorg.conf file in /etc/X11.
Before you make any changes to this file it's best to make a back up with
sudo cp /etc/X11/xorg.conf /etc/X11/xorg.bak
Then edit the file using gedit. It's sometimes best to learn and use the old style text editors like vi or nano rather than the GUI text editors (because some times you may have to boot with out the X server to fix any X config files that are corrupted)
sudo gedit /etc/X11/xorg.conf
The important sections to look for are
Section "Module"
Make sure that Load "glx" and Load "dri" are there.
The next one is
Section "Device"
and the most important part in this section is the "Driver" item.
If it says
Driver "i810"
then try changing it to
Driver "intel"
Save your changes and reboot (or try Ctrl+Alt+BackSpace to restart the X Server)
If I remember, I am sure that hardware acceleration is built into the mesa driver for most intel cards (this isn't the case for nVidia and ATI) and some of them are picky and may need additional options.
Your best bet to try and solve these kind of problems would be to dig around in the unbuntu forums (and if you cant find an answer make post giving as much detail as you can).
and to use LIBGL_DEBUG=verbose just add glxinfo to the end like thus
LIBGL_DEBUG=verbose glxinfo
all this does is is list out the same information as glxibfo with a few extra bits.