[NV04] bios OOB on kernel driver initialization

Submitted by Jorge Natz @jorgenatz

Assigned to Nouveau Project

Link to original bug (#111371)

Description

Created attachment 145023
The non-verbose kernel log

Steps to reproduce:
Boot linux with NV04 card in motherboard AGP slot.
OR
'modprobe nouveau' with NV04 card in motherboard AGP slot.

Actual Results:
2 times during the boot process the screen turns black, only to return back to the character display. The nouveau module ends up loaded, but the screen appears to not be using the drm driver.

Platform:
Alpine Linux 3.10.1 Standard, kernel 4.19.58 (non-verbose log)
Tiny Core Linux, kernel 4.19.10 (verbose external module log)

I tried using the kernel parameter nouveau.config=NvMSI=0, but it made no difference. I also tried using nouveau.config=NvBios=PRAMIN, even though there were no "checksum invalid" errors in the dmesg output.

I was unable to get a VBIOS dump, as the /sys/kernel/debug/dri folder was empty.

I was also hesitant to do a git bisection, as compiling the nouveau kernel module takes upwards of 7 hours on the machine I am using. However, I can try if you would like.

I have two kernel logs, one is from kernel 4.19.58 and has nouveau compiled as an in-tree module. The other log is for kernel 4.19.10 and has nouveau compiled as an out-of-tree module, but I was able to add the kernel parameters drm.debug=14 and log_buf_len=16M.

I apologize if I left any information out, and thank you for any reply.

Attachment 145023, "The non-verbose kernel log":
kernel_log.txt