PowerMac G5 and KMS

Herminio Hernandez, Jr. herminio.hernandezjr at gmail.com
Mon Mar 6 04:03:06 UTC 2017

Per the radeon man page *here
*However this option has been removed after 10.2. Under Linux the you
set it in yaboot bootloader by using 'radeon.agpmode=-1'. I do not
know if this will work in loader.conf

  *Option* *"BusType"*	*"**string**"*
	      Used  to	replace	 previous ForcePCIMode option.	Should only be
	      used when	driver's bus detection is incorrect  or	 you  want  to
	      force an AGP card	to PCI mode. You should	NEVER force a PCI card
	      to AGP bus.
	      PCI    --	PCI bus
	      AGP    --	AGP bus
	      PCIE   --	PCI Express bus
	      (used only when DRI is enabled)
	      The default is *auto* *detect.*

On Sun, Mar 5, 2017 at 3:35 PM, Hiroo Ono (小野寛生) <
hiroo.ono+freebsd at gmail.com> wrote:

> Thank you. I see the point.
> 2017-03-05 17:20 GMT+09:00 Herminio Hernandez Jr.
> <herminio.hernandezjr at gmail.com>:
> > Try to force the Radeon driver into PCI mode. Under Linux doing this
> stops
> > the blank screen and locks.
> Could anyone tell me how to do it? Can it be done from FreeBSD?
> I googled a little but could not find anything useful (maybe search
> words were not
> appropriate), so how to do it on Linux helps me also.
> pciconf -lc says:
> vgapci0 at pci0:0:16:0: class=0x30000 card=0x41501002 chip=0x41501002
> rev=0x00 hdr=0x00
>   cap 02[58] = AGP v3 8x 4x SBA disabled]
>   cap 01[50] = powerspec 2 supports D0 D1 D2 D3 current D0

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