etnaviv-gpu 134000.gpu: MMU fault status 0x00000002 on i.XM6 Quad Plus

[Luís Mendes]

Hi Fabio,

Thanks for spotting that!

Once I made that change, the penguin logos appeared during boot, and the
console is now working properly, however a few seconds after X session
starts the screen blanks and the ubuntu MATE login screen disappears.
I'm able to switch to console by pressing <Ctrl>+<Alt>+<F1> and the console
login text is properly displayed, however if I switch back to the X session
by pressing <Alt>+<F7>, sometimes I am able to see the session login screen
for a second or so, sometimes not even that, it just blanks.

I've removed mxcfb references from imx6qdl-wandboard-revd1.dtsi and changed
imx6qp-wandboard-revd1.dts file to:
/dts-v1/;

#include <dt-bindings/interrupt-controller/irq.h>

#include "imx6qp.dtsi"
#include "imx6qdl-wandboard-revd1.dtsi"

/ {
    model = "Wandboard i.MX6QuadPlus rev.D1";
    compatible = "fsl,imx6qp-wandboard", "fsl,imx6qp";

    memory {
        reg = <0x10000000 0x80000000>;
    };
};

&sata {
        status = "okay";
};


Regards,
Luís

On Sat, Aug 26, 2017 at 1:48 AM, Fabio Estevam <festevam at gmail.com> wrote:

> Hi Luís,
>
> On Fri, Aug 25, 2017 at 6:47 PM, Luís Mendes <luis.p.mendes at gmail.com>
> wrote:
> > Hi Fabio,
> >
> > Yes, I've recompiled the dtb file. I recompile and replace the dtb every
> > time I compile a new kernel.
> > I'm running the kernel on a Wandboard Quad Plus Rev. D1, for which there
> is
> > no dtb in the Vanilla kernel, so I've slightly adapted from the
> Technexion
> > kernel.
> >
> > The dts files follow in attachment. All remaining files are from the
> Vanilla
> > kernel 4.12.x.
>
> Ok, the dts does not look correct.
>
> You have a imx6qp board and you are using a compatible string of
> 'fsl,imx6q' instead of 'fsl,imx6qp'.
>
> The 'mxcfb' nodes also do not work with a mainline kernel.
>
> I would suggest you taking a look to an existing imx6qp from mainline,
> arch/arm/boot/dts/imx6qp-sabresd.dts for example.
>
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