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Wayland hangs (black screen) after dnf update to Fedora 29

Hi everyone
TLDR; I had a working Wayland Gnome Desktop in f28. Not anymore with f29.

Yesterday, I "dnf upgrade" my f28 to f29 ... to find a black screen when I
want to login to my Gnome session :(

The boot is OK till the gdm login screen, but when I enter my password, the
screen turns black, and the keyboard is locked (non-responsive, Num Lock
does not toggle, nor caps lock).
Then I don't know how to recover control, as no key binding is effective,
no mouse, no screen :(I power off the machine)

I successfully launched the desktop using "startx" from my user account
after booting with runlevel=3, so I think there is an issue with Wayland !

Where should I look to have more information about what's wrong with my
system ?
Which component should I report on BZ ?
What additional info would be helpful for knowledgeable developers ?

Thanks for your help
Best regards

Comments

Re: Wayland hangs (black screen) after dnf update to Fedora 29

By Fabio Valentini at 11/03/2018 - 19:13

On Sat, Nov 3, 2018 at 11:41 PM Alain Vigne <alain.vigne. ... at gmail dot com> wrote:
Hi Alain,

This seems to be a common issue with fedora 29 / NVIDIA drivers, I
reported it here:
<a href="https://bugzilla.redhat.com/show_bug.cgi?id=1643302" title="https://bugzilla.redhat.com/show_bug.cgi?id=1643302">https://bugzilla.redhat.com/show_bug.cgi?id=1643302</a>

And there are some people on reddit who seem to be affected, too.

Have you tried dropping "rhgb" from the kernel command line (by
editing the GRUB boot entry)? (Possibly also change
nvidia-drm.modeset=1 to nvidia-drm.modeset=0 to disable wayland in
gdm.)
Most people seem to confirm that this serves as a workaround.

Fabio

Re: Wayland hangs (black screen) after dnf update to Fedora 29

By =?utf-8?q?Jaros... at 11/03/2018 - 18:31

On 03/11/2018 22:50, Alain Vigne wrote:
I'd consult with this guide in section 2 [0] it's a more common issue I
myself encountered this, I stayed with older drivers for now.

From the post: "Note Fedora 29 users: GDM is not currently working
properly. I get black screen when I try to login any desktop. Gnome
3.30.1 works, but you will need some other display manager than GDM"

[0] <a href="https://www.if-not-true-then-false.com/2015/fedora-nvidia-guide/" title="https://www.if-not-true-then-false.com/2015/fedora-nvidia-guide/">https://www.if-not-true-then-false.com/2015/fedora-nvidia-guide/</a>

Jaroslav.