X server won't start with AMD Ryzen Embedded V2718 with Radeon Graphics

Hi,

We have a partner installing our software on their devices. We don’t have control of their hardware. Their CPU has a Radeon chipset embedded on the CPU. I’ve tried loading 3 different Radeon drivers. These are the errors they’re seeing:

 main  hostname: No address associated with hostname
 main  
 main  xauth: (stdin):1:  bad display name "99b7fb7:0" in "add" command
 main  /etc/X11/xinit/xserverrc: 3: /etc/X11/xinit/xserverrc: [[: not found
 main  /etc/X11/xinit/xserverrc: 3: /etc/X11/xinit/xserverrc: : Permission denied

and in the X log

[  7595.549] (==) ModulePath set to "/usr/lib/xorg/modules"
[  7595.549] (II) The server relies on udev to provide the list of input devices.
        If no devices become available, reconfigure udev or disable AutoAddDevices.
[  7595.549] (II) Loader magic: 0x56226c861e20
[  7595.549] (II) Module ABI versions:
[  7595.549]    X.Org ANSI C Emulation: 0.4
[  7595.549]    X.Org Video Driver: 24.0
[  7595.549]    X.Org XInput driver : 24.1
[  7595.549]    X.Org Server Extension : 10.0
[  7595.549] (--) using VT number 2

[  7595.549] (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration
[  7595.551] (II) xfree86: Adding drm device (/dev/dri/card0)
[  7595.551] (EE) /dev/dri/card0: failed to set DRM interface version 1.4: Permission denied
[  7595.559] (--) PCI:*(3@0:0:0) 1002:1636:1002:0123 rev 128, Mem @ 0xd0000000/268435456, 0xe0000000/2097152, 0xfe700000/524288, I/O @ 0x0000d000/256
[  7595.559] (II) LoadModule: "glx"
[  7595.559] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[  7595.561] (II) Module glx: vendor="X.Org Foundation"
[  7595.561]    compiled for 1.20.4, module version = 1.0.0
[  7595.561]    ABI class: X.Org Server Extension, version 10.0
[  7595.561] (II) LoadModule: "intel"
[  7595.561] (II) Loading /usr/lib/xorg/modules/drivers/intel_drv.so
[  7595.561] (II) Module intel: vendor="X.Org Foundation"
[  7595.561]    compiled for 1.20.1, module version = 2.99.917
[  7595.561]    Module class: X.Org Video Driver
[  7595.561]    ABI class: X.Org Video Driver, version 24.0
[  7595.561] (II) intel: Driver for Intel(R) Integrated Graphics Chipsets:
        i810, i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G,
        915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM,
        Pineview G, 965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33,
        GM45, 4 Series, G45/G43, Q45/Q43, G41, B43
[  7595.562] (II) intel: Driver for Intel(R) HD Graphics
[  7595.562] (II) intel: Driver for Intel(R) Iris(TM) Graphics
[  7595.562] (II) intel: Driver for Intel(R) Iris(TM) Pro Graphics
[  7595.574] (EE) No devices detected.
[  7595.574] (EE) 
Fatal server error:
[  7595.574] (EE) no screens found(EE) 
[  7595.574] (EE) 

which seems to indicate that it’s only loading intel graphics module.

Anyone experience anything similar?

Thanks!
Joe