[Nouveau] [Bug 110797] No video if nomodeset is not set with GTX 460

Thu May 30 18:04:56 UTC 2019

https://bugs.freedesktop.org/show_bug.cgi?id=110797

--- Comment #12 from Ilia Mirkin <imirkin at alum.mit.edu> ---
So... a pretty orderly init...

[    3.909830] nouveau 0000:01:00.0: NVIDIA GF104 (0c4200a1)
[    4.070350] nouveau 0000:01:00.0: bios: version 70.04.11.00.01
[    6.154050] nouveau 0000:01:00.0: fb: 1024 MiB GDDR5
[    6.229767] [TTM] Zone  kernel: Available graphics memory: 4059620 kiB
[    6.229770] [TTM] Zone   dma32: Available graphics memory: 2097152 kiB
[    6.229772] [TTM] Initializing pool allocator
[    6.229781] [TTM] Initializing DMA pool allocator
[    6.229806] nouveau 0000:01:00.0: DRM: VRAM: 1024 MiB
[    6.229808] nouveau 0000:01:00.0: DRM: GART: 1048576 MiB
[    6.229814] nouveau 0000:01:00.0: DRM: TMDS table version 2.0
[    6.229817] nouveau 0000:01:00.0: DRM: DCB version 4.0
[    6.229821] nouveau 0000:01:00.0: DRM: DCB outp 00: 02000300 00000000
[    6.229826] nouveau 0000:01:00.0: DRM: DCB outp 01: 01000302 00020030
[    6.229827] nouveau 0000:01:00.0: DRM: DCB outp 02: 04011380 00000000
[    6.229829] nouveau 0000:01:00.0: DRM: DCB outp 03: 08011382 00020030
[    6.229830] nouveau 0000:01:00.0: DRM: DCB outp 04: 02022362 00020010
[    6.229831] nouveau 0000:01:00.0: DRM: DCB conn 00: 00001030
[    6.229832] nouveau 0000:01:00.0: DRM: DCB conn 01: 00010130
[    6.229833] nouveau 0000:01:00.0: DRM: DCB conn 02: 00002261

... and then ... BAM

[    6.230590] nouveau 0000:01:00.0: bus: MMIO write of 00000002 FAULT at
13b154 [ IBUS ]
[    6.230765] WARNING: CPU: 2 PID: 482 at
drivers/gpu/drm/nouveau/nvkm/engine/disp/outp.c:191 nvkm_outp_init+0x181/0x220
[nouveau]
[    6.230765] Modules linked in: nouveau(+) raid0 hid_logitech_hidpp(+) video
mxm_wmi wmi i2c_algo_bit drm_kms_helper ttm drm crc32c_intel broadcom
bcm_phy_lib serio_raw tg3 firewire_ohci uas usb_storage firewire_core
hid_logitech_dj crc_itu_t
[    6.230774] CPU: 2 PID: 482 Comm: systemd-udevd Not tainted
5.0.17-300.fc30.x86_64 #1
[    6.230775] Hardware name: Dell Inc. Studio XPS 8100/0G3HR7, BIOS A05
07/08/2010
[    6.230822] RIP: 0010:nvkm_outp_init+0x181/0x220 [nouveau]
[    6.230823] Code: e8 48 83 c4 18 e9 78 ff ff ff 0f b6 4d 25 ba ff ff ff ff
0f bc d1 31 c9 83 78 10 01 75 03 8b 4d 2c 89 4c 24 04 e9 fc fe ff ff <0f> 0b e9
51 ff ff ff 48 8b 45 08 83 78 48 03 0f 86 43 ff ff ff 8b
[    6.230824] RSP: 0018:ffffb854013ab7e0 EFLAGS: 00010246
[    6.230825] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
ffff8ee26b64b070
[    6.230825] RDX: 00000000ffffffff RSI: 0000000000000000 RDI:
ffff8ee26b64b070
[    6.230826] RBP: ffff8ee26f0d7480 R08: ffff8ee270354380 R09:
ffff8ee277003c80
[    6.230827] R10: 00000000d8000001 R11: 00000000d8000001 R12:
ffff8ee26b64b008
[    6.230827] R13: ffff8ee26f9d9800 R14: ffff8ee26b64b010 R15:
ffff8ee26ac21400
[    6.230828] FS:  00007fa18da06940(0000) GS:ffff8ee277680000(0000)
knlGS:0000000000000000
[    6.230829] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    6.230830] CR2: 00007fa18eacf020 CR3: 000000022fdac000 CR4:
00000000000006e0
[    6.230831] Call Trace:
[    6.230880]  nvkm_disp_init+0x54/0xd0 [nouveau]
[    6.230917]  nvkm_engine_init+0xaa/0x1e0 [nouveau]
[    6.230955]  nvkm_subdev_init+0xb5/0x200 [nouveau]
[    6.230993]  nvkm_engine_ref.part.0+0x3f/0x60 [nouveau]
[    6.231030]  nvkm_ioctl_new+0x121/0x200 [nouveau]
[    6.231077]  ? nvkm_udevice_map+0x50/0x50 [nouveau]
[    6.231114]  nvkm_ioctl+0xde/0x180 [nouveau]
[    6.231150]  nvif_object_init+0xdb/0x140 [nouveau]
[    6.231186]  nvif_disp_ctor+0x69/0x150 [nouveau]
[    6.231234]  nouveau_display_create+0x2d8/0x620 [nouveau]
[    6.231282]  nouveau_drm_device_init+0x15f/0x810 [nouveau]
[    6.231286]  ? pci_bus_read_config_word+0x49/0x70
[    6.231333]  nouveau_drm_probe+0x1f2/0x2e0 [nouveau]
[    6.231336]  local_pci_probe+0x43/0x90

I don't think I've seen anything of the sort. Something in the display
initialization logic gets immensely upset after getting a MMIO write fault.

Is there anything esp awkward about this GPU that would differentiate it from a
run-of-the-mill desktop GPU that a random person might have?

The PCI ID is just "GF104 [GeForce GTX 460 OEM]" which doesn't seem too crazy.
And I don't see any PCI-ish errors about 01:00.0 (like unassigned resources or
whatnot).

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