I had the same problem with early Intrepid betas but now it works perfectly.
# uname -a Linux ThyMYthOS 2.6.27-8-generic #1 SMP Thu Nov 6 17:33:54 UTC 2008 i686 GNU/Linux
# lspci -v 00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07) Subsystem: Dell Device 024f Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at f6c00000 (64-bit, non-prefetchable) [size=4M] Memory at e0000000 (64-bit, prefetchable) [size=256M] I/O ports at ef98 [size=8] Capabilities: [90] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable- Capabilities: [d0] Power Management version 3
# dpkg -l xserver-xorg-video-intel ii xserver-xorg-video-intel 2:2.4.1-1ubuntu10 X.Org X server -- Intel i8xx, i9xx display driver
I had the same problem with early Intrepid betas but now it works perfectly.
# uname -a
Linux ThyMYthOS 2.6.27-8-generic #1 SMP Thu Nov 6 17:33:54 UTC 2008 i686 GNU/Linux
# lspci -v
Capabilities: [90] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable-
Capabilities: [d0] Power Management version 3
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
Subsystem: Dell Device 024f
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at f6c00000 (64-bit, non-prefetchable) [size=4M]
Memory at e0000000 (64-bit, prefetchable) [size=256M]
I/O ports at ef98 [size=8]
# dpkg -l xserver- xorg-video- intel xorg-video- intel 2:2.4.1-1ubuntu10 X.Org X server -- Intel i8xx, i9xx display driver
ii xserver-