Ubuntu 11.04 just installed on my old working Netvista. Running without Unity3d. After crawling for solutions for newbie like me to install Ubuntu...
THE PATH & ISSUE....
1. Display card 865G gives compatiblity problem :-
"Fail to Get Size of Gamma fo Output Default"
user@ubuntu ~# sudo service gdm stop
This command will stop the X.
Now we need to generate the xorg.conf file:
user@ubuntu ~# sudo Xorg -configure
This has generated the file in ~/xorg.conf.new.
We need to make the X using it so we have to put this file inside /etc/X11/
user@ubuntu ~# sudo mv ~/xorg.conf.new /etc/X11/xorg.conf
After moving this file to the proper location you can start the X again and see what happens:
user@ubuntu ~# sudo service gdm start
result :- still hang when idle
2. Window corruption with older ATI graphics cards
With older ATI graphics cards with 32MB or less of video RAM some corruption of direct rendered windows, for example OSD notifier windows, might appear. This may be worked around by disabling 'RenderAccel' in the Xorg configuration. (426582)
To do this first exit to the console using the following command:
sudo service gdm stop
Then create an Xorg configuration file with the command below:
sudo Xorg -configure
Then add the 'RenderAccel' option to /etc/X11/xorg.conf:
Section "Device"
...
Driver "radeon"
Option "RenderAccel" "off"
EndSection
And restart X/GDM.
sudo service gdm start
https://wiki.ubuntu.com/LucidLynx/ReleaseNotes
result : still not working. display with higher resolution but hangs.
3. Mavericki8xxStatus
X freezes (GPU lockups) are still being experienced on i830, i845, and i855 chips. Although there have been various attempts to fix these for Ubuntu 10.10 we have not managed to produce an acceptable fix.
To ensure that users with these cards get a stable graphical environment by default we no longer automatically load the Intel driver on these cards. This results in the fbdev driver loading, which does not provide any ability to change resolution, video acceleration, or 3D.
There are couple of options to re-enable these missing features with various trade-offs:
Manually enabling the Intel driver
Re-enabling the Intel driver will re-enable all the missing features - 3D acceleration, dual-head support, video acceleration. This will also re-enable all the freeze bugs, so it is likely that system stability will be adversely affected.
On some older ThinkPads this will enable all the missing features without freeze, and thereby allow composition to work smoothly, video playback in full screen without stalling pictures, allow choosing from more than one available screen resolution and refresh rate and allow dual screen setup - everything works with the release-default xserver-xorg-video-intel driver and kernel. In Kubuntu activating "Disable functionality check" under desktop effects keeps composition activated between reboots.
To enable the Intel driver you need to create a file called /etc/X11/xorg.conf containing the following:
Section "Device"
Identifier "Configured Video Device"
Driver "intel"
EndSection
Section "Monitor"
Identifier "Configured Monitor"
EndSection
Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
EndSection
Testing upstream patch for i855
There is a kernel patch for the i855 series chips that appears to fix the system freezes. After re-enabling the Intel driver as above, i855 users might wish to try the instructions here on the Lucid version of this page.
Enable the VESA driver
Like the fbdev driver the vesa driver provides no 3D acceleration or video acceleration. It does, however, support changing resolutions.
To enable the VESA driver you need to create a file called /etc/X11/xorg.conf containing the following:
Section "Device"
Identifier "Configured Video Device"
Driver "vesa"
EndSection
Section "Monitor"
Identifier "Configured Monitor"
EndSection
Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
EndSection
https://wiki.ubuntu.com/X/Bugs/Mavericki8xxStatus
result : still not working for my machine when display 'hang'
my last solution : have to change to nvidia display driver. hmmm...
