fglrx je pre 4.2 vo verzii 2.9.12 od Shneidera.
A doska je KT400 takze mi ide GFX automaticky na AGP 8x.

kdesi som cital, ze pre AGP 8x sa zmenil sposob ziskavania
aperture memory size (myslim, ze to je kdesi v biose )
a tym padom ak pouzivam stary agpgart a karta je v AGP 8x mode,
tak nie je mozne zistit aperture memory size.

Skusal som uz vsetky moznosti s agpgartom v jadre
(staticky|dynamicky|vobec), ale vzdy je to ta ista hlaska.

kratky uryvok z XFree86.log :

.
.
(II) fglrx(0): DRIScreenInit done
(II) fglrx(0): Kernel Module Version Information:
(II) fglrx(0): Name: fglrx
(II) fglrx(0): Version: 2.9.12
(II) fglrx(0): Date: May 9 2003
(II) fglrx(0): Desc: ATI Fire GL DRM kernel module
(II) fglrx(0): Kernel Module version matches driver.
(II) fglrx(0): Kernel Module Build Time Information:
(II) fglrx(0): Build-Kernel UTS_RELEASE: 2.4.18-4GB
(II) fglrx(0): Build-Kernel MODVERSIONS: no
(II) fglrx(0): Build-Kernel __SMP__: no
(II) fglrx(0): Build-Kernel PAGE_SIZE: 0x1000
(II) fglrx(0): [drm] register handle = 0xe9000000
(EE) fglrx(0): [agp] unable to acquire AGP, error "xf86_ENODEV"
(EE) fglrx(0): cannot init AGP

Fatal server error:
Caught signal 11. Server aborting

tuto hlasku vypisuje nezvisle na tom ci pouzivam interny alebo
externy agpgart

no a toto som nasiel v messages:

Jul 13 19:20:14 linux kernel: Fire GL built-in AGP-support
Jul 13 19:20:14 linux kernel: Based on agpgart interface v0.99 (c) Jeff Hartmann
Jul 13 19:20:14 linux kernel: agpgart: Maximum main memory to use for agp memory: 439M
Jul 13 19:20:14 linux kernel: agpgart: Detected Via Apollo KT400 chipset in AGP v2 compatible mode at 00:00.0
Jul 13 19:20:14 linux kernel: agpgart: Detected Via Apollo KT400 chipset
Jul 13 19:20:14 linux kernel: agpgart: unable to determine aperture size.

no a tym to uplne hasne