Re: radeon without DRI

[Michael <macallan%netbsd.org@localhost>]

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Hello,

On Nov 14, 2009, at 2:11 PM, César Catrián Carreño wrote:

> I have this r200. This is -current 5.99.21. It began to fail DRI  
> time ago:
>
> cetrox@core $ pcictl /dev/pci1  
> list                                                         
> [15:59:31 - 09-11-14]
> 001:00:0: ATI Technologies Radeon 8500 QL (VGA display)

We really need to put that in some prominent place on the website.

> but is not detected by Xorg. This card has its BusID defined in  
> xorg.conf:
> Section "Device"
>        Identifier      "Radeon-Single"
>        Driver          "radeon"
>        BusID           "PCI:1:0:0"

So you're using an xorg.conf for Xorg 1.4 with Xorg 1.6 which grew  
support for what they call 'PCI domains' - support for several  
independent PCI buses. The old NetBSD-specific code would only see  
whatever is visible through /dev/pci0 which is enough for most older  
PCs with only one PCI bus and an AGP slot, but fails in several  
annoying ways on most halfway recent Power Macs ( which have up to  
four PCI buses ), several sparc64 boxes, modern PCs etc.
So, these days the BusID needs to include a Domain ID. Well actually  
it always did but since we only supported one domain it was always 0  
and the BusID parsing code assumes domain 0 if it's omitted since  
XFree86 4.0.

Did you noticedthis:
> drmOpenByBusid: Searching for BusID pci:0000:01:00.0

vs,

> drmOpenByBusid: drmGetBusid reports pci:0001:01:00.0

?

That's DRM telling you that it didn't find your device in domain 0 but  
in domain 1.
So your BusID needs to look like this:
PCI:1@1:0:0

Also, X -configure would have written this BusID ( if you tried that  
and it didn't that's a bug so please tell me )

have fun
Michael

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