Re: PR/52440 CVS commit: src/sys/external/bsd/drm2/dist/drm/nouveau/nvkm/subdev/pci

["John D. Baker" <jdbaker%consolidated.net@localhost>]

The following reply was made to PR kern/52440; it has been noted by GNATS.

From: "John D. Baker" <jdbaker%consolidated.net@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: PR/52440 CVS commit: src/sys/external/bsd/drm2/dist/drm/nouveau/nvkm/subdev/pci
Date: Thu, 13 Feb 2020 11:38:29 -0600 (CST)

 On Thu, 13 Feb 2020, John D. Baker wrote:
 
 > I'll see if I can get information from blind operation.  Attaching a
 > serial console may mask the problem if the framebuffer console doesn't
 > attach due to console being on a serial port.
 
 The framebuffer console attaches and booting completes, but the screen
 either goes blank, or remains static at its last VGA text contents (boot
 menu in the case of my USB stick after issuing 'consdev com0'.
 
 Capturing dmesg from the serial port shows what is otherwise a normal
 occurrance for nouveau:
 
 [...]
 [   5.6496738] kern.module.path=/stand/amd64/9.99.46/modules
 [   5.7135385] nouveau0: info: NVIDIA G92 (092a80a2)
 [   5.8797673] nouveau0: info: bios: version 62.92.7d.00.10
 [   5.9697957] nouveau0: interrupting at msi3 vec 0 (nouveau0)
 [   6.0357095] nouveau0: info: fb: 512 MiB GDDR3
 [   6.1098488] Zone  kernel: Available graphics memory: 2482786 kiB
 [   6.1808941] Zone   dma32: Available graphics memory: 2097152 kiB
 [   6.2526541] nouveau0: info: DRM: VRAM: 512 MiB
 [   6.3056949] nouveau0: info: DRM: GART: 1048576 MiB
 [   6.3628944] nouveau0: info: DRM: TMDS table version 2.0
 [   6.4252942] nouveau0: info: DRM: DCB version 4.0
 [   6.4804135] nouveau0: info: DRM: DCB outp 00: 02000300 00000028
 [   6.5511343] nouveau0: info: DRM: DCB outp 01: 01000302 00020030
 [   6.6218544] nouveau0: info: DRM: DCB outp 02: 04011310 00000028
 [   6.6925745] nouveau0: info: DRM: DCB outp 03: 02011312 00020030
 [   6.7632943] nouveau0: info: DRM: DCB outp 04: 010223f1 00c0c080
 [   6.8340140] nouveau0: info: DRM: DCB conn 00: 00001030
 [   6.8953742] nouveau0: info: DRM: DCB conn 01: 00002130
 [   6.9567344] nouveau0: info: DRM: DCB conn 02: 00000210
 [   7.0180945] nouveau0: info: DRM: DCB conn 03: 00000211
 [   7.0794545] nouveau0: info: DRM: DCB conn 04: 00000213
 [   7.1408142] nouveau0: warn: DRM: failed to create encoder 0/1/0: -19
 [   7.2186069] nouveau0: warn: DRM: TV-1 has no encoders, removing
 [   7.2893256] kern info: [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
 [   7.3798061] kern info: [drm] Driver supports precise vblank timestamp query.
 [   7.4703671] nouveau0: info: DRM: MM: using CRYPT for buffer copies
 [  11.5719254] nouveaufb0 at nouveau0
 [  17.6242267] wsdisplay0 at nouveaufb0 kbdmux 1
 [  17.6942595] uhidev0 at uhub5 port 1 configuration 1 interface 0
 [  17.7642778] uhidev0: Logitech (0x46d) USB Optical Mouse (0xc05a), rev 2.00/54.00, addr 2, iclass 3/1
 [  17.8843301] ums0 at uhidev0: 8 buttons, W and Z dirs
 [  17.9443515] wsmouse0 at ums0 mux 0
 
 So, we're back to the beginning of this PR.  Nouveaufb attaches, but
 doesn't display:  either blank or no change from last VGA text.
 
 
 I'm still not sure if the serial console hasn't masked some other bad
 behavior.  I'm sure I waited long enough for booting to complete with
 video console but I couldn't log in (albeit blindly).  I could only drop
 to DDB and reboot.
 
 -- 
 |/"\ John D. Baker, KN5UKS               NetBSD     Darwin/MacOS X
 |\ / jdbaker[snail]consolidated[flyspeck]net  OpenBSD            FreeBSD
 | X  No HTML/proprietary data in email.   BSD just sits there and works!
 |/ \ GPGkeyID:  D703 4A7E 479F 63F8 D3F4  BD99 9572 8F23 E4AD 1645