nv driver reports "VideoRam: 0 kBytes"

[Richard and Monica Bland]

All,

I'm try to debug an instability problem on my Linux box and part of that
process is removing the binary nvidia drivers and using the nv driver
instead.

I have a dual head machine :

ted ~ # lspci | grep VGA
01:00.0 VGA compatible controller: nVidia Corporation G71 [GeForce 7300
GS] (rev a1)
03:00.0 VGA compatible controller: nVidia Corporation G71 [GeForce 7300
GS] (rev a1)

The first VGA head points to an XFCE Desktop, the second to the TV. The
machine runs two copies of X, so different users 'own' the different VGA
heads

The first VGA head initialises OK and starts the XFCE GUI. The second
head fails to start X, complaining:

ted log # tail Xorg.1.log
(II) NV(0): Not using default mode "1024x768" (insufficient memory for mode)
(II) NV(0): Not using default mode "2048x1536" (insufficient memory for
mode)
(II) NV(0): Not using default mode "1024x768" (insufficient memory for mode)
(WW) NV(0): Mode pool is empty
(EE) NV(0): No valid modes found
(II) UnloadModule: "nv"
(II) UnloadModule: "vgahw"
(II) Unloading /usr/lib/xorg/modules//libvgahw.so
(II) UnloadModule: "int10"
(II) Unloading /usr/lib/xorg/modules//libint10.so
(EE) Screen(s) found, but none have a usable configuration.

Fatal server error:
no screens found

I traced this (insufficient memory for mode) back to this entry in the X
log :

(--) NV(0): VideoRAM: 0 kBytes

I've tried forcing the VideoRAM to 131072 (what X is reporting on the
first card), but it's being ignored.

I'm using xorg-server-1.3.0 and xf86-video-nv-2.1.6 and Linux
2.6.22-gentoo-r5. I've uploaded my Xorg.log and xorg.conf as follows:

http://www.combinedeffort.com/X/xorg.conf
http://www.combinedeffort.com/X/Xorg.log


Anyone have any ideas why the 'second' card reports 0KB VideoRAM?

Cheers,

Rich