[Nouveau] [Bug 102913] New: Nouveau on >4.12.12 not loading EDID

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102913

            Bug ID: 102913
           Summary: Nouveau on >4.12.12 not loading EDID
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: andrewb03 at gmail.com
        QA Contact: xorg-team at lists.x.org

Created attachment 134394
  --> https://bugs.freedesktop.org/attachment.cgi?id=134394&action=edit
Arch 4.12.13 dmesg

System: Arch Linux
CPU: AMD Ryzen 1700
Motherboard: Gigabyte AX370 Gaming K7
After an upgrade from Arch Linux kernel 4.12.10 to 4.12.12 (or 4.12.13) the
system will hang just before initializing nouveaufb.  The system doesn't
respond to keyboard or mouse but can be reset with the Ctrl+Alt+Del or
accessible via ssh.

If I turn off KMS via nomodeset nouveau.modeset=0, I am able to boot normally
but without graphics acceleration.c

The following showed in dmesg from kernel 4.12.13:

[   12.945435] nouveau 0000:0a:00.0: DRM: DDC responded, but no EDID for DP-1
[   13.087167] gnome-shell[901]: segfault at 28 ip 00007ffab9d672f5 sp
00007fff5771ba20 error 4 in libmutter-0.so.0.0.0[7ffab9d1d000+139000]
[   16.264988] nouveau 0000:0a:00.0: DRM: DDC responded, but no EDID for DP-1
[   16.286324] nouveau 0000:0a:00.0: DRM: DDC responded, but no EDID for DP-1

As a result of this I have to either use the nvidia proprietary drivers or not
upgrade.

This seems to be the exact opposite of a 4.12 regression reported where EDID
would not load on 4.12 kernels with DP.

I have two PCIe GPUs: GK104 and GP102.  Neither are detected on those kernel
versions.  I tested 4.13 as well and it can't find the EDID either on that
kernel version.

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