I installed RC1 on my Toshiba 440CDT laptop successfully, but I found that
both Anaconda and Xconfigurator are trying to use XF86_SVGA-3.3.6 server
while
there is native driver in XFree-4.0.1 (chips_drv.o). It works for me after
manual setup. See "man chips".  Here is my lspci output:

00:00.0 Host bridge: Toshiba America Info Systems 601 (rev 27)
00:04.0 VGA compatible controller: Chips and Technologies F65554 (rev c2)
00:0b.0 USB Controller: NEC Corporation USB (rev 01)

And here is a part of XFree-4 server log:

(II) LoadModule: "scanpci"
(II) Loading /usr/X11R6/lib/modules/libscanpci.a
(II) Module scanpci: vendor="The XFree86 Project"
     compiled for 4.0.1a, module version = 0.1.0
     ABI class: XFree86 Video Driver, version 0.2
(II) UnloadModule: "scanpci"
(II) Unloading /usr/X11R6/lib/modules/libscanpci.a 
(--) PCI:*(0:4:0) C&T 65554 rev 194, Mem @ 0xfe000000/24
....
(II) LoadModule: "chips"
(II) Loading /usr/X11R6/lib/modules/drivers/chips_drv.o
(II) Module chips: vendor="The XFree86 Project" 
  compiled for 4.0.1a, module version = 1.0.0
  Module class: XFree86 Video Driver
  ABI class: XFree86 Video Driver, version 0.2