If this is the patch from the freedesktop thread then I am already running it will post my results soon. 

Sent from my iPhone

> On Apr 30, 2016, at 2:52 PM, Marek Olšák <email address hidden> wrote:
> 
> Created attachment 123370
> final fix?
> 
> Could you please test this patch?
> 
> -- 
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1432949
> 
> Title:
>  r300 Mesa driver not loading with KMS enabled
> 
> Status in Mesa:
>  Confirmed
> Status in mesa package in Ubuntu:
>  Confirmed
> 
> Bug description:
>  I cannot get 3D acceleration to work. I was expecting to see the gears
>  via the command 'glxgears' I have KMS enable on my iBook G4 by using
>  the following parameter
> 
>  Linux radeon.modeset=1 video=offb:off video=1024x768-32
>  video=radeonfb:off radeon.agpmode=-1
> 
>  Here are my Mesa and Xorg output
> 
>  rican-linux@ibookG4-UbuntuMATE:~$ cat /var/log/Xorg.0.log |grep -e radeon -e dri2 -e drm -e KMS
>  [    32.774] Kernel command line: root=UUID=fadadc01-6fd5-49fa-85f3-9e52d0fe6155 ro quiet splash video=offb:off video=1024x768-32 video=radeonfb:off radeon.modeset=1 video=offb:off video=1024x768-32 video=radeonfb:off radeon.agpmode=-1
>  [    33.203] (II) xfree86: Adding drm device (/dev/dri/card0)
>  [    35.011] (II) LoadModule: "radeon"
>  [    35.012] (II) Loading /usr/lib/xorg/modules/drivers/radeon_drv.so
>  [    35.337] (II) Module radeon: vendor="X.Org Foundation"
>  [    35.604] (II) [KMS] Kernel modesetting enabled.
>  [    35.697] (II) Loading sub module "dri2"
>  [    35.697] (II) LoadModule: "dri2"
>  [    35.697] (II) Module "dri2" already built-in
>  [    35.870] (II) RADEON(0): KMS Color Tiling: enabled
>  [    35.870] (II) RADEON(0): KMS Color Tiling 2D: disabled
>  [    35.870] (II) RADEON(0): KMS Pageflipping: enabled
>  rican-linux@ibookG4-UbuntuMATE:~$ LIBGL_DEBUG=verbose glxinfo |grep render
>  libGL: screen 0 does not appear to be DRI3 capable
>  libGL: pci id for fd 4: 1002:4e56, driver r300
>  libGL: OpenDriver: trying /usr/lib/powerpc-linux-gnu/dri/tls/r300_dri.so
>  libGL: OpenDriver: trying /usr/lib/powerpc-linux-gnu/dri/r300_dri.so
>  libGL error: No matching fbConfigs or visuals found
>  libGL error: failed to load driver: r300
>  libGL: OpenDriver: trying /usr/lib/powerpc-linux-gnu/dri/tls/swrast_dri.so
>  libGL: OpenDriver: trying /usr/lib/powerpc-linux-gnu/dri/swrast_dri.so
>  libGL error: No matching fbConfigs or visuals found
>  libGL error: failed to load driver: swrast
>  Error: couldn't find RGB GLX visual or fbconfig
>  rican-linux@ibookG4-UbuntuMATE:~$ dpkg -l libgl1-mesa-dri
>  Desired=Unknown/Install/Remove/Purge/Hold
>  | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
>  |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
>  ||/ Name           Version      Architecture Description
>  +++-==============-============-============-=================================
>  ii  libgl1-mesa-dr 10.5.0~rc1-0 powerpc      free implementation of the OpenGL
>  rican-linux@ibookG4-UbuntuMATE:~$ 
> 
>  rican-linux@ibookG4-UbuntuMATE:~$ lsb_release -rd
>  Description:    Ubuntu Vivid Vervet (development branch)
>  Release:    15.04
> 
>  rican-linux@ibookG4-UbuntuMATE:~$ apt-cache policy libgl1-mesa-dri
>  libgl1-mesa-dri:
>    Installed: 10.5.0~rc1-0ubuntu1
>    Candidate: 10.5.0-0ubuntu1
>    Version table:
>       10.5.0-0ubuntu1 0
>          500 http://ports.ubuntu.com/ubuntu-ports/ vivid/main powerpc Packages
>   *** 10.5.0~rc1-0ubuntu1 0
>          100 /var/lib/dpkg/status
> 
>  ProblemType: Bug
>  DistroRelease: Ubuntu 15.04
>  Package: libgl1-mesa-dri 10.5.0~rc1-0ubuntu1
>  ProcVersionSignature: Ubuntu 3.18.0-13.14-powerpc-smp 3.18.5
>  Uname: Linux 3.18.0-13-powerpc-smp ppc
>  ApportVersion: 2.16.1-0ubuntu2
>  Architecture: powerpc
>  CurrentDesktop: MATE
>  Date: Tue Mar 17 00:58:43 2015
>  InstallationDate: Installed on 2015-03-17 (0 days ago)
>  InstallationMedia: Ubuntu-MATE 15.04 "Vivid Vervet" - Alpha powerpc (20150225)
>  SourcePackage: mesa
>  UpgradeStatus: No upgrade log present (probably fresh install)
> 
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