VO: Description: Null video output

I am attempting to install mplayer in a user account.  The audio works.
But, no window opens to play video.  This is the same for mp4 files and
webm files.

The system is running RHEL 8.5.

I believe the following is the salient part of the verbose output:

=======================================================================
===
[lavf] stream 1: audio (aac), -aid 0, -alang und
LAVF: 1 audio and 1 video streams found
LAVF: build 3871078
VIDEO:  [H264]  1920x1080  0bpp  23.976 fps  5162.2 kbps (630.2
kbyte/s)
[V]
filefmt:44  fourcc:0x34363248  size:1920x1080  fps:23.976  ftime:=0.041
7
using /dev/fb0
Can't open /dev/fb0: Permission denied
[fbdev2] Using device /dev/fb0
[fbdev2] Can't open /dev/fb0: Permission denied
VO: [v4l2] No such file or directory
vo_cvidix: No vidix driver name provided, probing available ones (-v
option for details)!
[vidixlib] PROBING: cyberblade
[cyberblade] Error occurred during pci scan: Operation not permitted
[vidixlib] PROBING: mach64
[mach64] Error occurred during pci scan: Operation not permitted
[vidixlib] PROBING: mga
[mga] probe
[mga] Error occurred during pci scan: Operation not permitted
[vidixlib] PROBING: mga_crtc2
[mga] probe
[mga] Error occurred during pci scan: Operation not permitted
[vidixlib] PROBING: nvidia
[nvidia_vid] Error occurred during pci scan: Operation not permitted
[vidixlib] PROBING: pm3
[pm3] Error occurred during pci scan: Operation not permitted
[vidixlib] PROBING: radeon
[radeon] Error occurred during pci scan: Operation not permitted
[vidixlib] PROBING: rage128
[rage128] Error occurred during pci scan: Operation not permitted
[vidixlib] PROBING: s3
[s3_vid] Error occurred during pci scan: Operation not permitted
[vidixlib] PROBING: sis
[SiS] Error occurred during pci scan: Operation not permitted
[vidixlib] PROBING: unichrome
[unichrome] Error occurred during pci scan: Operation not permitted
[vidixlib] No suitable driver can be found.

[VO_SUB_VIDIX] Couldn't find working VIDIX driver.
=======================================================================
===

Running lspci in a user's account returns, among many other lines, this
one:


01:00.0 VGA compatible controller: NVIDIA Corporation GP107 [GeForce
GTX 1050 Ti] (rev a1)

Setting permissions of fb0 to allow all users to read it has been
tried.  It has no effect.

So, mplayer returns that pci scans are not permitted, when they are. 
And, mplayer sets the video driver to null, when there is a driver for
my video card.

This same machine was running RHEL 7.5.  mplayer ran just fine on it
when installed in the same user account.  From apperances, this new
install of mplayer is running just fine.  It is just that the video
does not play.

I am stumped.  How do I figure out where the problem is?

Craig.