problems with Ubuntu 9.04 and Intel 82830 CGC

Have you installed and configured video drivers? Are you fully updated?

Can you also provide the ouput of:

sudo lshw -C display; uname -a; lsb_release -a

Thanks

I have installed mplayer using apt-get.
I am updated.

# lshw -C display
  *-display:0 UNCLAIMED
       description: VGA compatible controller
       product: 82830 CGC [Chipset Graphics Controller]
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 03
       width: 32 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list
       configuration: latency=0
  *-display:1 UNCLAIMED
       description: Display controller
       product: 82830 CGC [Chipset Graphics Controller]
       vendor: Intel Corporation
       physical id: 2.1
       bus info: pci@0000:00:02.1
       version: 00
       width: 32 bits
       clock: 33MHz
       capabilities: pm cap_list
       configuration: latency=0 maxlatency=11

# uname -a
Linux pokornp-laptop 2.6.28-13-generic #45-Ubuntu SMP Tue Jun 30 19:49:51 UTC 2009 i686 GNU/Linux

# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 9.04
Release: 9.04
Codename: jaunty

Thanks
Pavel

Ok all looks well.

Looks like a common issues
http://forums.linuxmint.com/viewtopic.php?f=59&t=27116

Seems to use the i810 driver. You have this as part of a standard (bloated) install:
http://ubuntuforums.org/archive/index.php/t-485171.html

Try adding some of the options in the links to the file that pops up when you run:

gksudo gedit /etc/X11/xorg.conf

Adding the line
   Option "AccelMethod" "XAA"
to the Device section of the file /etc/X11/xorg.conf
and rebooting
solves all the 4 problems described above.
However, it introduces 2 new problems:
5. When taking the side bar in a web browser and trying to scroll down the web page
   only a few pixel lines at the top and at the bottom of the window change, not the page
   as a whole. Hitting the "Reload current page" redraws the page correctly.
   I use Firefox 3.0.11.
6. Moving a window across the screen spoils the borders of the window and other graphics too.

Turning the acceleration off by adding the line
   Option "NoAccel"
to the Device section of the file /etc/X11/xorg.conf
solves all the 6 problems described above, but then the graphics is really slow,
Mathematica rotates 3D graphs so slowly that it is not usable,
mplayer ignores fullscreen mode.

Thanks for your help really very much.
Pavel

Could try this. I don't use any Intel video (I think they are worthless) so cannot comment on its effeciveness.

http://webupd8.blogspot.com/2009/05/reverting-xorg-video-intel-driver-of.html

Thank you very much for your help.
I had problems with Ubuntu 9.04 as described above.
So I cold-installed Ubuntu 8.10 but I got no window manager.
So I cold-installed Ubuntu 8.04 and everything works fine now:
I have a window manager, I have a nice and fast graphics.
If my experience can help the developers to fix these bugs for future release,
I will be happy to cooperate.
Thanks for Ubuntu, I like it.
Pavel

Sweet. That guide is a bit hit and miss. It either nails it or doesnt. Oh well. Glad its all good :)