[Bug 201867] New: Nouveau + discrete GPU (GP104M = GTX 1070 M) Driver Crashes, System freezes, dual screen not working

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=201867

            Bug ID: 201867
           Summary: Nouveau + discrete GPU (GP104M = GTX 1070 M) Driver
                    Crashes, System freezes, dual screen not working
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.19.4-arch1-1-ARCH #1 SMP PREEMPT
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri at kernel-bugs.osdl.org
          Reporter: david.kremer.dk at gmail.com
        Regression: No

Created attachment 279831
  --> https://bugzilla.kernel.org/attachment.cgi?id=279831&action=edit
Driver Traceback

The problem is proteiform. It is actually well described in
https://bugzilla.kernel.org/show_bug.cgi?id=156341 so this could be a
duplicate, however, since the driver supposed to actually drive the nvidia GPU
is nouveau, I feel obliged to fill a new bug report to address the issue.

So basically, there is two issues:

1. when loading the nouveau driver in a tty, you can't launch Xorg afterward,
the xinit program waits for a server to be available but that never come.
2. When loading the nouveau driver after the X session has started, the fan
finally switches off, but there is first a traceback in dmesg and everything
that is reported in bug_id=156341 happens: subsequent calls to lspci/lshw/...
are freezing the system definetely without possibility to recover except by
doing a hard reboot.

So there's definitely something messy about this familiy of Nvidia GPU
integrated as a discrete GC on this new laptop generation.

Can't give much more info

See attachment for the traceback.

lspci output:

00:00.0 Host bridge: Intel Corporation 8th Gen Core Processor Host Bridge/DRAM
Registers (rev 07)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core
Processor PCIe Controller (x16) (rev 07)
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 630 (Mobile)
01:00.0 VGA compatible controller: NVIDIA Corporation GP104M [GeForce GTX 1070
Mobile] (rev ff)

CPU=Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz

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