re: AGP Bridge support for AMD 761

[Alexander Stohr]

For diagnostics you should check outputs of "lspci -xxx -s 0:0".
(Sent this data to the list here, if you still fail with your attempt.)

First and second byte are the vendor id (AMD = 1022) in low high order.
Third and forth value form the low and the high part of the chips device id.

List of device ids:
  AMD 751 0x7006 (Irongate)
  AMD 761 0x700E (IGD4)
  AMD 762 0x700C

SMP versions not listed here, see 
http://www.yourvote.com/pci/pciread.asp?venid=0x1022 for more device IDs.

Kernel source from 2.4.9 shows up with support for the AMD 751.
Since follow up chips often do not change much, the 
  ===> "agp_try_unsupported=1" <===
option will cause the driver to apply the 751 code onto any other
chipset that has AMD as its vendor, as long as AGP registers 
are found for it. This should do the job for several versions, or 
crash rahter fast if the chipset is no longer compatible.

regards AlexS.

PS: i am not subscribed to this list.
PS2: i might read your answers via http://marc.theaimsgroup.com