[Nouveau] [Bug 107501] New: System hangs on attempt to login to Plasma (Wayland)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107501

            Bug ID: 107501
           Summary: System hangs on attempt to login to Plasma (Wayland)
           Product: Mesa
           Version: 18.0
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Drivers/DRI/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: studio at anchev.net
        QA Contact: nouveau at lists.freedesktop.org
                CC: tiwai at suse.de

STR:

1. Install plasma5-session-wayland
2. Logout of current Plasma session
3. Login selecting Plasma wayland session

EXPECTED:

Normal login to desktop environment.

ACTUAL:

System hangs and does not respond to anything: neither to Alt+Ctrl+Backspace,
nor to Alt+Ctrl+F1, nor to Alt+Ctrl+Del. A hardware reset was necessary to
reboot it.

--------------------

Tested on openSUSE Leap 15.0 with kernels:

kernel-default-4.12.14-lp150.12.7.1.x86_64
kernel-default-4.17.12-2.1.gef4920c.x86_64

--------------------

Initially reported to openSUSE and advised to report it upstream here:

https://bugzilla.opensuse.org/show_bug.cgi?id=1103827

journalctl output:
for 4.12: https://bugzilla.opensuse.org/attachment.cgi?id=778942
for 4.17: https://bugzilla.opensuse.org/attachment.cgi?id=779003

--------------------

The videocard is NVIDIA GTX680

[~]: rpm -q Mesa-dri-nouveau
Mesa-dri-nouveau-18.0.2-lp150.17.2.x86_64

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