Re: reports from the GPU trenches

[Robert Elz <kre%munnari.OZ.AU@localhost>]

    Date:        Sat, 13 Sep 2025 20:03:22 +0000
    From:        nia <nia%NetBSD.org@localhost>
    Message-ID:  <aMXOChF06zLdd0ns%homeworld.netbsd.org@localhost>

Nia, are your reports related to the current (as in -10 -11 HEAD)
GPU kernel drivers & netbsd xsrc, or possibly pkgsrc xorg, or to
what is currently being developed to eventually replace all (or much
of) that?

As:


  | NVIDIA GeForce GT 730 - nouveau panics on boot.

I have one of those, and have been using in in HEAD kernels from
9.99.97 (May 2023?) until now (11.99.2) with few observable graphics
problems (it certainly works well enough to use) though for 1080p
video (from mplayer) it doesn't really have enough grunt, and video
falls behind the audio quite quickly (but it can cope if mplayer scales
the video down to 720p).  1920p (4K) video is so slow it may as well be
a slide show.

No boottime panics (usually) - I think there may be one, quite rarely,
but simply booting again has always worked (if that is what the issue is).

Relevant parts of the dmesg for it below - and yes, I know the graphics
memory number is nonsense, and vaguely think I once understood the
explanation someone (sorry, I have forgotten who) gave for why that is
broken - but it seems harmless.

kre


nouveau0 at pci1 dev 0 function 0: NVIDIA GeForce GT 730 (rev. 0xa1)
hdaudio0 at pci1 dev 0 function 1: HD Audio Controller
hdaudio0: interrupting at msi0 vec 0
hdaudio0: HDA ver. 1.0, OSS 4, ISS 4, BSS 0, SDO 4, 64-bit
hdafg0 at hdaudio0: NVIDIA product 0051 
[the rest of the audio config deleted, along with lots more irrelevant stuff]
nouveau0: NVIDIA GK208B (b06070b1)
nouveau0: bios: version 80.28.b8.00.13
nouveau0: interrupting at msi12 vec 0 (nouveau0)
nouveau0: fb: 2048 MiB GDDR5
Zone  kernel: Available graphics memory: 9007199248558328 KiB
Zone   dma32: Available graphics memory: 2097152 KiB
nouveau0: DRM: VRAM: 2048 MiB
nouveau0: DRM: GART: 1048576 MiB
nouveau0: DRM: TMDS table version 2.0
nouveau0: DRM: DCB version 4.0 
nouveau0: DRM: DCB outp 00: 01000f82 00020020
nouveau0: DRM: DCB outp 01: 08011f02 00020010
nouveau0: DRM: DCB outp 02: 02022f62 00020010
nouveau0: DRM: DCB outp 03: 04033f72 00020010
nouveau0: DRM: DCB conn 00: 00002061
nouveau0: DRM: DCB conn 01: 00001161
nouveau0: DRM: DCB conn 02: 00010261
nouveau0: DRM: DCB conn 03: 00020361
nouveau0: DRM: MM: using COPY for buffer copies
[drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[drm] Driver supports precise vblank timestamp query.
nouveaufb0 at nouveau0
[drm] Initialized nouveau 1.3.1 20120801 for nouveau0 on minor 0
nouveaufb0: framebuffer at 0x40500c0000, size 3840x2160, depth 32, stride 15360
no data for est. mode 640x480x67
wsdisplay0 at nouveaufb0 kbdmux 1: console (default, vt100 emulation), using wskbd0
[etc]