Under Backtrack 4 R1 and R2, I am unable to start X without running "fixvesa".

I am attempting to boot BT4R2 from a USB stick via loopback with Grub2 as the bootloader. BT4R2 boots fine, and leaves me with this issue with X.

I am attempting to boot BT4R2 on a Lenovo X61 Tablet which has the Intel GM965/GL960 Graphics Controller. I also have a 1400x1050 resolution screen.

This is the error produced after running "startx":

(EE) GARTInit: Unable to open /dev/agpgart (No such file or directory)
FATAL: Could not load /lib/modules/2.6.35.8/modules.dep: No such file or directory
(EE) [drm] drmOpen failed.
(EE) intel(0): [dri] DRIScreenInit failed. Disabling DRI.
(EE) intel(0): Failed to allocate framebuffer. Is your VideoRAM set too low?
(EE) intel(0): Failed to allocate framebuffer. Is your VideoRAM set too low?
(EE) intel(0): Couldn't allocate video memory

Fatal server error:
AddScreen/ScreenInit failed for driver 0
This is the error if I try to use the xorg.conf that is produced by my Ubuntu 10.10 installation on this laptop:

(EE) Failed to load module "dri2" (module does not exist, 0)
(EE) GARTInit: Unable to open /dev/agpgart (No such file or directory)
FATAL: Could not load /lib/modules/2.6.35.8/modules.dep: No such file or directory
(EE) [drm] drmOpen failed.
(EE) intel(0): [dri] DRIScreenInit failed. Disabling DRI.
(EE) intel(0): Failed to allocate framebuffer. Is your VideoRAM set too low?
(EE) intel(0): Failed to allocate framebuffer. Is your VideoRAM set too low?
(EE) intel(0): Couldn't allocate video memory
Does anyone know what is happening here besides the obvious missing modules.dep and there being no agpgart device present?

Another issue is, when I run "fixvesa", the Lenovo TrackPoint mouse does not work.

Everything works perfectly in BT4-Final.

Kernel module "i915" is not present in the new Backtrack 4 R1 and Backtrack 4 R2.
Xorg.0.log.BT4Final - X.Org X Server 1.5.2 Release Date: 10 October 2 - Xorg.0.log.BT4Final
(II) [drm] loaded kernel module for "i915" driver.
(II) [drm] DRM interface version 1.3
(II) [drm] DRM open master succeeded.
Xorg.0.log.BT4R2 - X.Org X Server 1.5.2 Release Date: 10 October 2 - Xorg.0.log.BT4R2
[drm] failed to load kernel module "i915"
(EE) [drm] drmOpen failed.
(EE) intel(0): [dri] DRIScreenInit failed. Disabling DRI.