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

[Luís Mendes]

Hi Lucas,

I see in xf86-video-armada/etnaviv/etnaviv.c, that each of the functions
etnaviv_PolyLines,..., has a respective fallback function call name
unaccel_...

When you say disable individual acceleration function, you are saying to
force the call to the respective unaccel function?

Regards,
Luís

On Wed, Aug 30, 2017 at 8:43 AM, Lucas Stach <l.stach at pengutronix.de> wrote:

> Am Dienstag, den 29.08.2017, 14:36 -0300 schrieb Fabio Estevam:
> > On Mon, Aug 21, 2017 at 9:05 AM, Luís Mendes <luis.p.mendes at gmail.com>
> wrote:
> > > Hi,
> > >
> > > I'm a software and hardware engineer and I would like to help fix this
> > > issue. I'm however not acquainted with Open GL nor with Vivante GPUs,
> thus
> > > some guidelines would be welcome.
> > >
> > > Problem details:
> > > This issue appears when I login into Ubuntu Mate 17.04. I'm using
> kernel
> > > 4.11.12 with Etnaviv drivers, libdrm 2.4.82 and mesa 17.2.0 RC4.
> > > During the login multiple MMU faults occur and the GUI becomes
> corrupted...
> > > the applications menu misses some words or characters, also dialog
> boxes
> > > appearing thereafter are also corrupted, missing some words or
> characters.
> > > The applications, including OpenGL accelerated ones are fine, rendering
> > > without detectable errors or artifacts.
> > >
> > > The error only occurs with GC3000, not with GC2000...
> > >
> > > Here is the dmesg output of the error and system:
> > > [    6.260838] etnaviv gpu-subsystem: bound 134000.gpu (ops gpu_ops
> > > [etnaviv])
> > > [    6.272870] etnaviv gpu-subsystem: bound 130000.gpu (ops gpu_ops
> > > [etnaviv])
> > > [    6.273303] etnaviv gpu-subsystem: bound 2204000.gpu (ops gpu_ops
> > > [etnaviv])
> > > [    6.273328] etnaviv-gpu 134000.gpu: model: GC320, revision: 5303
> > > [    6.420783] systemd-fstab-generator[364]: Checking was requested
> for "/",
> > > but it is not a device.
> > > [    7.116977] etnaviv-gpu 130000.gpu: model: GC3000, revision: 5450
> > > [    8.488007] etnaviv-gpu 2204000.gpu: model: GC355, revision: 1216
> > > [    8.488035] etnaviv-gpu 2204000.gpu: Ignoring GPU with VG and FE2.0
> > > [    8.497905] [drm] Initialized etnaviv 1.1.0 20151214 for
> gpu-subsystem on
> > > minor 1
> > >
> > > ...
> > >
> > > [   47.628983] etnaviv-gpu 134000.gpu: MMU fault status 0x00000002
> > > [   47.635159] etnaviv-gpu 134000.gpu: MMU 0 fault addr 0x0a03ffc0
> > > [   47.641100] etnaviv-gpu 134000.gpu: MMU 1 fault addr 0x00000000
> > > [   47.647034] etnaviv-gpu 134000.gpu: MMU 2 fault addr 0x00000000
> > > [   47.652967] etnaviv-gpu 134000.gpu: MMU 3 fault addr 0x00000000
> > > [   51.050237] etnaviv-gpu 134000.gpu: hangcheck detected gpu lockup!
> > > [   51.056686] etnaviv-gpu 134000.gpu:      completed fence: 828
> > > [   51.062592] etnaviv-gpu 134000.gpu:      active fence: 832
> > > [   51.069158] etnaviv-gpu 134000.gpu: hangcheck recover!
> >
> > Just wanted to confirm that I was able to reproduce this failure on a
> > imx6qp sabresd board as well.
> >
> > Luís shared his UbuntuMate rootfs and I successfully tested it on imx6q
> sabresd.
> >
> > However on a imx6qp sabresd the Ubuntu login screen does not even
> > start.  If I type the password then the MMU faults above are
> > triggered.
> >
> > Has anyone successfully used X11 on imx6qp with Etnaviv?
>
> Yes, it's running fine for me, but my test-case is a stripped down
> embedded X11, not some full-blown desktop distro.
>
> Generally the way to debug this would be to disable individual
> acceleration functions within the armada driver, forcing the software
> fallback path to get a clue where things are going wrong.
>
> Regards,
> Lucas
>
>
>
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