drm and intel gm45

[Mark Davies <mark%ecs.vuw.ac.nz@localhost>]

Hi,
   having finally got the latest (pkgsrc) X server working on my laptop I 
thought I'd try to get drm working. Built a 5.0_STABLE kernel with i915drm 
enabled and booted but the X server died.

dmesg gives

i915drm0 at vga1error: [drm:pid0:drm_attach] *ERROR* pci_mapreg info for 36 
failed
: Mobile Intel® GM45 Express Chipset
i915drm0: AGP at 0xe0000000 256MB
i915drm0: Initialized i915 1.6.0 20080730
   [...]
error: [drm:pid369:i915_set_status_page] *ERROR* can not ioremap virtual 
address for G33 hw status page

Xorg.0.log reports

    [...]
(II) intel(0): 0x10000000:            end of aperture
(WW) intel(0): ESR is 0x00000010, page table error
(WW) intel(0): PGTBL_ER is 0x00100000, CS instruction GTT PTE
(WW) intel(0): Existing errors found in hardware state.
    [...]
(EE) intel(0): hw status page initialization Failed
(EE) intel(0): Fail to setup hardware status page.
(II) intel(0): [drm] removed 1 reserved context for kernel
(II) intel(0): [drm] unmapping 8192 bytes of SAREA 0xc3299000 at 0xbb703000
(II) intel(0): [drm] Closed DRM master.

Fatal server error:
AddScreen/ScreenInit failed for driver 0


Any suggestions on whats broken? How to fix?

cheers
mark