kern/58053: Issues on -current with nouveau graphics

[paul%whooppee.com@localhost]

>Number:         58053
>Category:       kern
>Synopsis:       Issues on -current with nouveau graphics
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Mar 19 16:25:00 +0000 2024
>Originator:     Paul Goyette
>Release:        NetBSD 10.99.10
>Organization:
+---------------------+--------------------------+----------------------+
| Paul Goyette (.sig) | PGP Key fingerprint:     | E-mail addresses:    |
| (Retired)           | 1B11 1849 721C 56C8 F63A | paul%whooppee.com@localhost    |
| Software Developer  | 6E2E 05FD 15CE 9F2D 5102 | pgoyette%netbsd.org@localhost  |
| & Network Engineer  |                          | pgoyette99%gmail.com@localhost |
+---------------------+--------------------------+----------------------+
>Environment:
	
	
System: NetBSD speedy.whooppee.com 10.99.10 NetBSD 10.99.10 (SPEEDY 2024-03-18 02:46:01 UTC) #0: Mon Mar 18 05:00:00 UTC 2024 paul%speedy.whooppee.com@localhost:/build/netbsd-local/obj/amd64/sys/arch/amd64/compile/SPEEDY amd64
Architecture: x86_64
Machine: amd64
>Description:
>How-To-Repeat:
With -current sources updated within the last few days, on both a
GENERIC and local-custom kernel I am seeing some issues with the
nouveau video driver.  For system details, the dmesg is posted
on nycbug.  Of particular note is the graphics card, a GeForce
730 with 2GB GDDR5:

	nouveau0 at pci1 dev 0 function 0: vendor 10de product
	1287 (rev. 0xa1)
	...
	nouveau0: NVIDIA GK208B (b06070b1)
	nouveau0: bios: version 80.28.b8.00.13
	nouveau0: interrupting at msi14 vec 0 (nouveau0)
	nouveau0: fb: 2048 MiB GDDR5
	Zone  kernel: Available graphics memory: 9007199250255680 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: 01000f02 00020030
	nouveau0: DRM: DCB outp 01: 02011f62 00020010
	nouveau0: DRM: DCB outp 02: 02022f10 00000000
	nouveau0: DRM: DCB conn 00: 00001031
	nouveau0: DRM: DCB conn 01: 00002161
	nouveau0: DRM: DCB conn 02: 00000200
	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 0xfce80c0000, size 1920x1080,
	depth 32, stride 7680
	nouveau0: autoconfiguration error: error: DRM: core
	notifier timeout
	nouveau0: autoconfiguration error: error: DRM: base-0:
	timeout
	no data for est. mode 640x480x67


The most common problem results in the following console message:

	nouveau0: autoconfiguration error: error: DRM: core
	notifier timeout

This occurs frequently whenever I switch back and forth from a
console session to an X session using ctrl-alt-f<n>.  Often there
is a delay before which  keystrokes are not recognized for a few
seconds.  Most of the time the system recovers, but not always.

In the X session, cursor movement can be "jerky".  The cursor
will follow mouse movement for a bit, and then stop/pause before
continuing.  The stop/pause usually occurs when the cursor is
ready to enter a region which needs to change the curson icon
(Ie, entering a button needsd cursor to become hand/finger).  As
above, the stall only lasts a couple of seconds, after which (in
most cases) normal cursor tracking resumes.

I'm also getting the following errors, although I can't correlate
them to specific human interactions:

	nouveau0: autoconfiguration error: error: fifo: fault
	00 [READ] at 00000000000be000 engine 04 [BAR1] client
	07 [HUB/HOST_CPU] reason 02 [PTE] on channel -1
	[007fce7000 unknown]

(The specific values printed vary.)

The final issue occurs when xdm is exiting, either during system
shutdown or whwen I terminate an X session.  The following message
gets logged, for channel values of 4 down to 1:

	nouveau0: autoconfiguration error: error: user: failed
	to idle channel <n> [user]

There is a roughly 11-second timeout associated with these errors,
but the system does recover; the timeout process takes 2+ minutes.
>Fix:
	please

>Unformatted: