[Nouveau] [Bug 87942] [NVE7] Unable to use nouveau

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87942

--- Comment #4 from bruno.pagani at ens-lyon.org ---
Created attachment 111622
  --> https://bugs.freedesktop.org/attachment.cgi?id=111622&action=edit
xorg.conf.nouveau

(In reply to Ilia Mirkin from comment #3)
> 
> Two observations --
> 
> (a) nouveau isn't being added as a GPU but rather as a "primary" video card.

That is supposed to be the behavior of Bumblebee (two X.org server, one with
the integrated card only, another with the dedicated one only, fired up at
demand, i.e. when you do optirun something), unless I misunderstood something
somewhere.

> I had assumed you had one of the new-fangled optimus situations where the
> screens are attached to the igpu and 3d offloading can be done to the
> secondary gpu -- is that not the case? Using an xorg.conf with Device
> entries tends to mess all of that up, btw.

Indeed, every outputs are attached to my igpu. About xorg.conf files, I have
/etc/bumblebee/xorg.conf.nouveau, which is used by Bumblebee and is attached,
but I’ve also just seen that I have this in /etc/X11/xorg.conf.d/20-intel.conf:

Section "ServerLayout"
    Identifier  "Layout0"
    Option      "AutoAddGPU" "false"
EndSection

I’m going to comment that section and restart X to see if it changes anything
about DRI_PRIME.

> (b) That error should have caused some nasties to be printed to dmesg. I
> think I know what they are, but I still want to see them.

You’re absolutely right, here they are:

On first attempt:
nouveau E[    PBUS][0000:02:00.0] MMIO write of 0x00000000 FAULT at 0x418880 [
IBUS ]
nouveau E[    PBUS][0000:02:00.0] MMIO write of 0x00000000 FAULT at 0x418c64 [
IBUS ]
nouveau E[   PIBUS][0000:02:00.0] GPC0: 0x419f74 0x00000555 (0x3800820c)
nouveau E[    PBUS][0000:02:00.0] MMIO write of 0x00000000 FAULT at 0x41bff8 [
IBUS ]
nouveau E[    PBUS][0000:02:00.0] MMIO write of 0x00000002 FAULT at 0x500914 [
IBUS ]
nouveau E[    PBUS][0000:02:00.0] MMIO write of 0x00000002 FAULT at 0x4188ac [
IBUS ]
nouveau E[    PBUS][0000:02:00.0] MMIO write of 0xbadf1008 FAULT at 0x419cc0 [
IBUS ]
nouveau E[   PIBUS][0000:02:00.0] GPC0: 0x419cc0 0xbadf1008 (0x3800820c)
nouveau E[    PBUS][0000:02:00.0] MMIO write of 0xbadf1000 FAULT at 0x419eb4 [
IBUS ]
nouveau E[   PIBUS][0000:02:00.0] GPC0: 0x419eb4 0xbadf1000 (0x3800820c)
nouveau E[    PBUS][0000:02:00.0] MMIO write of 0x00000000 FAULT at 0x405804 [
IBUS ]
nouveau E[    PBUS][0000:02:00.0] MMIO write of 0x3f800000 FAULT at 0x405804 [
IBUS ]
nouveau E[    PBUS][0000:02:00.0] MMIO write of 0x00000000 FAULT at 0x405804 [
IBUS ]
nouveau E[    PBUS][0000:02:00.0] MMIO write of 0x3f800000 FAULT at 0x405804 [
IBUS ]
nouveau E[    PBUS][0000:02:00.0] MMIO write of 0x00000000 FAULT at 0x405818 [
IBUS ]
nouveau E[    PBUS][0000:02:00.0] MMIO write of 0x3f800000 FAULT at 0x405818 [
IBUS ]
nouveau E[    PBUS][0000:02:00.0] MMIO write of 0x00000000 FAULT at 0x40581c [
IBUS ]
nouveau E[   PIBUS][0000:02:00.0] HUB0: 0x404170 0x00000012 (0x0e008201)
nouveau E[  PGRAPH][0000:02:00.0] HUB_INIT timed out
nouveau E[  PGRAPH][0000:02:00.0] 409000 - done 0x00000204
nouveau E[  PGRAPH][0000:02:00.0] 409000 - stat 0x00000000 0x00000000
0x00000000 0x00000000
nouveau E[  PGRAPH][0000:02:00.0] 409000 - stat 0x00000000 0x00000000
0x00000002 0x00000009
nouveau E[  PGRAPH][0000:02:00.0] 502000 - done 0x00000300
nouveau E[  PGRAPH][0000:02:00.0] 502000 - stat 0x00000000 0x00000000
0x00000000 0x00000000
nouveau E[  PGRAPH][0000:02:00.0] 502000 - stat 0x00000000 0x00000000
0x00000000 0x00000000
nouveau E[  PGRAPH][0000:02:00.0] init failed, -16

And next ones are all identical to:

nouveau E[    PBUS][0000:02:00.0] MMIO write of 0x00000000 FAULT at 0x418880 [
IBUS ]
nouveau E[   PIBUS][0000:02:00.0] GPC0: 0x419eb4 0xbadf1000 (0x3800820c)
nouveau E[    PBUS][0000:02:00.0] MMIO write of 0x00000002 FAULT at 0x405820 [
IBUS ]
nouveau E[   PIBUS][0000:02:00.0] HUB0: 0x404170 0x00000012 (0x0e008201)
nouveau E[  PGRAPH][0000:02:00.0] HUB_INIT timed out
nouveau E[  PGRAPH][0000:02:00.0] 409000 - done 0x00000204
nouveau E[  PGRAPH][0000:02:00.0] 409000 - stat 0x00000000 0x00000000
0x00000000 0x00000000
nouveau E[  PGRAPH][0000:02:00.0] 409000 - stat 0x00000000 0x00000000
0x00000002 0x00000009
nouveau E[  PGRAPH][0000:02:00.0] 502000 - done 0x00000300
nouveau E[  PGRAPH][0000:02:00.0] 502000 - stat 0x00000000 0x00000000
0x00000000 0x00000000
nouveau E[  PGRAPH][0000:02:00.0] 502000 - stat 0x00000000 0x00000000
0x00000000 0x00000000
nouveau E[  PGRAPH][0000:02:00.0] init failed, -16

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