I have Ubuntu 8.04 Hardy with Gnome and most things are working fine. When I try to play a DVD or DivX videos (and probably others), Mplayer or Totem will just close. I traced it to the fact that my color in xorg.conf is set to 16 bits. I did this to improve overall video performance. If I set it to 24 bits, I can play videos and DVD's but web page scrolling and everything else suffers and youtube, which is already bad, is unwatchable. Should I have a driver installed for my video chip? Here's the info from lshw:

*-display UNCLAIMED
description: VGA compatible controller
product: NM2230 [MagicGraph 256AV+]
vendor: Neomagic Corporation
physical id: 0
bus info: pci@0000:01:00.0
version: 30
width: 32 bits
clock: 33MHz
capabilities: pm vga_controller bus_master cap_list
configuration: latency=128 maxlatency=255 mingnt=16
Any help is appreciated.
Just a thought - would it help to uninstall/reinstall Totem Movie Player with the color depth set to 16 bit?

Update: I'm not sure what I did but changing xorg.conf forced me into a screen at startup I have never seen before and can't seem to get back to again. It was a configuration screen for video and I was able to specify the type of video card and display I have. It still reports the same in lshw but Youtube, DivX, and DVD all play fine now at 24 bits. Anyone know how to get back to that sceen if I ever have to reinstall Ubuntu?
Chris

Try this and post what driver information and video card information it gives:

OK, here's what I got:

01:00.0 VGA compatible controller: Neomagic Corporation NM2230 [MagicGraph 256AV+] (rev 30) (prog-if 00 [VGA controller])
Subsystem: Sony Corporation Unknown device 80a2
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B+
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 128 (4000ns min, 63750ns max)
Interrupt: pin A routed to IRQ 9
Region 0: Memory at fd000000 (32-bit, prefetchable) [size=16M]
Region 1: Memory at fe800000 (32-bit, non-prefetchable) [size=4M]
Region 2: Memory at fec00000 (32-bit, non-prefetchable) [size=1M]
Capabilities: [dc] Power Management version 1
Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-