OBS video driver issue for Dell XPS

[farmer]

I installed OBS on a Dell XPS laptop with Fedora 29 installed. I used
the software manager and I obtained a functional application. It did
not have a browser source so I downloaded the current release of
obs-studio (v 27.2.0) and built it according to these instructions

https://obsproject.com/wiki/install-instructions#linux

When I ran obs, I got a black screen when I specified a browser
source. I do obtain video when I select screen display or camera
input as a source so I do not think it this issue is caused by a
hardware acceleration conflict as I read for a black screen issue.

I then I rolled back to the package manager version. I now obtain this
error message

Failed to initialize video. Your GPU may not be supported, or your
graphics drivers may need to be updated.

From what I have read, one could set an environment variable to
overcome this issue.

LIBGL_ALWAYS_SOFTWARE=1 obs

It does not help. Can you assisted me to resolve these two issues?

Thanks.

 

[farmer]

Since the above log file says that the X display could not be opened, I ran obs as root. obs ran. I then ran obs as a user again and observed
/var/log/messages. It indicated that

localhost /usr/libexec/gdm-x-session[2090]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x4400008 specified for 0x4400006 (Error).

Is it a permission problem that occurred since I did a make install of the current release of obs? I could not find any changes of permissions in the make install.

Thoughts?

Thanks.