GMA X4500 video problems

[tsm2010]

Mother: Asus P5QPL-VM EPU
Video: GMA x4500/G41
Distro: Jaunty (X Updates)
xserver-xorg-video-intel 2.2.9.0
Monitor: Dell
HDTV: Sharp Aquos 1080p

The Asus motherboard has three video outputs: VGA, DVI, & HDMI. I'm
ignoring the VGA output. The graphic processor is an
Intel GMA X4500:G41:2E32.

-----
lspci -vvnn:
00:02.0 VGA compatible controller [0300]: Intel Corporation 4 Series
Chipset Integrated Graphics Controller [8086:2e32] (rev 03)

Subsystem: ASUSTeK Computer Inc. Device [1043:836d]

Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx+
-----

If I connect the DVI port to my Dell monitor, I can select (and do select)
the full 1920x1080 resolution.

If I connect the HDMI port to the Aquos and reboot, I get 1600x1200,
60hz, period, on both displays. I cannot change the resolution on either
display, at all. I cannot change HDMI1, the Dell, or HDMI2, the Aquos.

XRandR tells me that I may choose 1920, 1368, etc, but I can't actually
select any of these other resolutions. This is kind of annoying, to tell
the truth. I bought this Motherboard as the basis for a home theater
PC. Don't tell me that I have to go the Windows route...

/etc/X11/xorg.conf is no help at all, it's filled with generic blab:

Section "Monitor"
Identifier "Configured Monitor"
EndSection

Where are the real config files?

How the heck do I fix this? I want 1920x1080 on both my Dell and
my Sharp.

~Tom

[cignu]

bump

i have the same problem..