I tested out NetBSD 1.6 on a duron board with a via chipset: it has a
S3 ProSavage DDR chipset and I believe it is either the same device or
similar. NetBSD's detection is seperate and apart from X's detection
and I don't think XFree86 4.x has S3 drivers that support this chip.
While NetBSD properly detects the card (as both a pci and a agp
device), it doesn't seem that NetBSD's XFree86 uses any NetBSD-specific
hooks to actually use it. I don't think kernel tweaking will change
this. The X documentation recommends using 'scanpci -v' to send them
your card details, but obviously you may have to wait for the driver to
be written/incorporated in XFree86 and then in turn incorporated into
NetBSD.

I had success using the basic vga driver. The vesa driver had very good
results in terms of resolution/color depth EXCEPT that when I kill the
server or try to switch to a virtual console the machine hangs... so
basically I cannot shutdown the machine or go back to console if I use
the vesa driver.

 --- Bob Bernstein <rs@bernstein.providence.ri.us> wrote: > I have a
new athlon machine bearing onboard video of the S3 ProSavage
> 
> variety. The 40g drive is evenly split between installs of Debian
> Linux 
> and NetBSD stable, albeit the latter now sports a -current kernel.
> (The 
> current kernel configured the onboard audio, whereas the install 
> 'stable' kernel did not...)
> 
> The linux install (X ver. 4.2.1.1) did not configure the onboard
> video
> until I grabbed a savage_drv.o file from
> http://www.probo.com/timr/savage40.html. Works famously now. I did
> not 
> have similar success with the NetBSD savage_drv.o from that same 
> website. Here's a snippet from dmesg:
> 
> NetBSD 1.6U (GENERIC) #0: Fri Jul 25 03:45:54 UTC 2003
> 	wingnut@nbsdtroll:/usr/src/sys/arch/i386/compile/GENERIC
> [snip]
> 
> pci0 at mainbus0 bus 0: configuration mode 1
> pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
> pchb0 at pci0 dev 0 function 0
> pchb0: VIA Technologies product 0x3116 (rev. 0x00)
> agp0 at pchb0: aperture at 0xd0000000, size 0x10000000
> ppb0 at pci0 dev 1 function 0: VIA Technologies VT8633 (Apollo Pro
> 266) CPU-AGP Bridge (rev. 0x00)
> pci1 at ppb0 bus 1
> pci1: i/o space, memory space enabled
> vga1 at pci1 dev 0 function 0: S3 product 0x8d04 (rev. 0x00)
> wsdisplay0 at vga1 kbdmux 1: console (80x25, vt100 emulation)
> wsmux1: connecting to wsdisplay0
> 
> I believe that 'vga1' is the onboard video (the linux kernel detects
> the
> same product number: 0x8d04). But looking at the above, it seems that
> vga1 is handling wscons. Is this why it is not available for X? The
> error message from X, after trying startx, is "(EE) No devices
> detected." 
> 
> So, is there some kernel tweaking that will fix this?
> 
> Best,
> -- 
> Bob Bernstein    

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