https://bugs.freedesktop.org/show_bug.cgi?id=70388

--- Comment #35 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
Huh. Well, I totally forgot about this bug. And due to wanting to cram
ever-more GPUs into my box, ended up getting a PCI NV4x so that I could keep
using 2x PCIe slots for "better" GPUs. Well, this turned out to be a NV44A with
a PCI bridge, and I'm getting the same issues.

FTR, I have:

# lspci -nn -d ::300
02:00.0 VGA compatible controller [0300]: NVIDIA Corporation GF108 [GeForce GT
620] [10de:0f01] (rev a1)
04:00.0 VGA compatible controller [0300]: NVIDIA Corporation GM107 [GeForce GTX
745] [10de:1382] (rev a2)
09:00.0 VGA compatible controller [0300]: NVIDIA Corporation NV44A [GeForce
6200] [10de:0221] (rev a1)
09:01.0 VGA compatible controller [0300]: NVIDIA Corporation NV34 [GeForce FX
5200] [10de:0322] (rev a1)

And only the NV44A is giving me trouble. The NV34 works like a champ, as do the
newer GPUs. On boot, with a 4.8.5 kernel, I got:

[    8.114998] [drm] Initialized nouveau 1.3.1 20120801 for 0000:04:00.0 on
minor 1
[    8.115015] nouveau 0000:09:00.0: enabling device (0000 -> 0002)
[    8.115152] nouveau 0000:09:00.0: NVIDIA NV44A (04a100a1)
[    8.302416] nouveau 0000:09:00.0: bios: version 05.44.a2.10.61
[    8.344251] nouveau 0000:09:00.0: fb: 256 MiB DDR2
[    8.470618] nouveau 0000:09:00.0: DRM: VRAM: 252 MiB
[    8.470619] nouveau 0000:09:00.0: DRM: GART: 512 MiB
[    8.470621] nouveau 0000:09:00.0: DRM: TMDS table version 1.1
[    8.470622] nouveau 0000:09:00.0: DRM: DCB version 3.0
[    8.470624] nouveau 0000:09:00.0: DRM: DCB outp 00: 01000300 00000028
[    8.470625] nouveau 0000:09:00.0: DRM: DCB outp 01: 02011310 00000028
[    8.470627] nouveau 0000:09:00.0: DRM: DCB outp 02: 01011312 00000000
[    8.470628] nouveau 0000:09:00.0: DRM: DCB outp 03: 020223f1 00c0c030
[    8.470629] nouveau 0000:09:00.0: DRM: DCB conn 00: 0000
[    8.470630] nouveau 0000:09:00.0: DRM: DCB conn 01: 2130
[    8.470632] nouveau 0000:09:00.0: DRM: DCB conn 02: 0210
[    8.470633] nouveau 0000:09:00.0: DRM: DCB conn 03: 0211
[    8.470634] nouveau 0000:09:00.0: DRM: DCB conn 04: 0213
[    8.470647] nouveau 0000:09:00.0: DRM: Adaptor not initialised, running
VBIOS init tables.
[    8.470773] nouveau 0000:09:00.0: DRM: Saving VGA fonts
[    8.577099] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[    8.577101] [drm] Driver supports precise vblank timestamp query.
[    8.582396] nouveau 0000:09:00.0: DRM: MM: using CPU for buffer copies
[    8.582407] nouveau 0000:09:00.0: DRM: Setting dpms mode 3 on TV encoder
(output 3)
[    8.632789] nouveau 0000:09:00.0: DRM: Load detected on output B
[    8.642638] nouveau 0000:09:00.0: DRM: allocated 720x576 fb: 0x9000, bo
ffff8f5961eda000
[    8.642701] nouveau 0000:09:00.0: fifo: DMA_PUSHER - ch 0 [DRM] get 00000000
put 00000178 state 80000000 (err: INVALID_CMD) push 00000010
[    8.642794] nouveau 0000:09:00.0: fb2: nouveaufb frame buffer device

and when trying to start X on it, I got plenty more errors:

[  441.868341] nouveau 0000:09:00.0: DRM: Load detected on output B
[  441.920374] nouveau 0000:09:00.0: DRM: Load detected on output B
[  441.965447] nouveau 0000:09:00.0: fifo: DMA_PUSHER - ch 2 [X[2962]] get
00049000 put 00049090 state 80000000 (err: INVALID_CMD) push 00000010
[  441.966367] nouveau 0000:09:00.0: fifo: DMA_PUSHER - ch 1 [X[2962]] get
00018000 put 000180a0 state 80000000 (err: INVALID_CMD) push 00000010
[  471.988366] nouveau 0000:09:00.0: DRM: Setting dpms mode 0 on TV encoder
(output 3)
[  471.988448] nouveau 0000:09:00.0: DRM: Output TV-1 is running on CRTC 0
using output B
[  472.033852] nouveau 0000:09:00.0: fifo: DMA_PUSHER - ch 1 [X[2962]] get
000180a0 put 000180b0 state 80000000 (err: INVALID_CMD) push 00000000
[  472.407262] nouveau 0000:09:00.0: fifo: DMA_PUSHER - ch 1 [X[2962]] get
000180b0 put 000180c0 state 80000000 (err: INVALID_CMD) push 00000000
[  483.836587] nouveau 0000:09:00.0: fifo: DMA_PUSHER - ch 1 [X[2962]] get
000180c0 put 000180d0 state 80000000 (err: INVALID_CMD) push 00000000
[  483.838904] nouveau 0000:09:00.0: fifo: DMA_PUSHER - ch 1 [X[2962]] get
000180d0 put 000180f0 state 80000000 (err: INVALID_CMD) push 00000000

and so on. Will investigate, I guess.

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