Re: R200 DRM/KMS

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On Tue Jul 7 15:12:28 2015 GMT+0100, Alex Deucher wrote:
> On Tue, Jul 7, 2015 at 9:46 AM, Steven Newbury <steve@xxxxxxxxxxxxxxx> wrote:
> >
> > I've tried an xserver-1.16, and ddx, libdrm without LTO and with
> > gcc4.9.  Exactly the same thing.  I wondered whether the unused i810
> > could be interfering but triggering a device "remove" before starting
> > X made no difference.
> >
> > I'm a bit of a loss.  I suppose I could try writing a simple test for
> > drmSetInterfaceVersion().  At least that should determine whether the
> > xserver/ddx is in the clear.
> >
> > Any other ideas?
> >
> 
> Can you start a non-X runlevel and start X manually as root (assuming
> you are using a login manager now)?
> 
My test program worked fine. I considerably improved it over the version I posted. I'll send it to the list when I get back.

I removed the drmSetInterfaceVersion() from radeon_kms.c and it got much further.  Starting Xserver as root  apparently started normally, according to the log, although  there was a permission denied error on mode set during init. I don't know whether it was related or not, but the display then hung with a non-blinking cursor. Strange to get a permission denied as root!

Starting GNOME via gdm gives a working slow X session but for some reason only uses sw dri even though the Xorg log shows r200 DRI2 as initialized. Perhaps it's a config error somewhere.. ?

startx as a regular user just works! 

But mutter doesn't, perhaps that's 
why a gnome session isn't working. It just gives the following error:
Cogl-ERROR **: Failed to create texture 2d due to size/format constraints

Mutter is supposed to work on r200, right?


-- 
Sent from my Jolla
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