Greetings all,

I've just received a new Dell Precision 7810. I've installed FreeBSD
10.1 (UEFI boot), checked out sources, built world & kernel and am now
running r284449. So far, so good.

The problem is Xorg. I'm running the latest Xorg in ports; I just did a
'make install clean' in /usr/ports/x11/xorg with no errors.

The display card is a FirePro W4100. lspci shows:

03:00.0 VGA compatible controller: Advanced Micro Devices, Inc.
[AMD/ATI] Cape Verde GL [FirePro W4100]

It has 4 DisplayPorts, and I have 2 monitors plugged in. If I run 'Xorg
-configure' it says

Number of created screens does not match number of detected devices.
  Configuration failed.

Looking through /var/log/Xorg.0.log it appears that the X server is
trying to use the RADEON driver, but ends with:

=====
[  1292.463] (--) Using syscons driver with X support (version 2.0)
[  1292.463] (--) using VT number 9

[  1292.485] (II) [KMS] Kernel modesetting enabled.
[  1292.485] (WW) Falling back to old probe method for vesa
[  1292.485] (WW) VGA arbiter: cannot open kernel arbiter, no multi-card
support
[  1292.485] (==) RADEON(0): Depth 24, (--) framebuffer bpp 32
[  1292.485] (II) RADEON(0): Pixel depth = 24 bits stored in 4 bytes (32
bpp pixmaps)
[  1292.485] (==) RADEON(0): Default visual is TrueColor
[  1292.485] (==) RADEON(0): RGB weight 888
[  1292.485] (II) RADEON(0): Using 8 bits per RGB (8 bit DAC)
[  1292.485] (--) RADEON(0): Chipset: "VERDE" (ChipID = 0x682c)
[  1292.579] (EE) RADEON(0): [drm] Failed to open DRM device for
pci:0000:03:00.0: No such file or directory
[  1292.579] (EE) RADEON(0): Kernel modesetting setup failed
[  1292.579] (II) UnloadModule: "radeon"
[  1292.579] (EE) Screen(s) found, but none have a usable configuration.
[  1292.579] (EE)
Fatal server error:
[  1292.579] (EE) no screens found(EE)
[  1292.580] (EE)
Please consult the The X.Org Foundation support
         at http://wiki.x.org
 for help.
[  1292.580] (EE) Please also check the log file at
"/var/log/Xorg.0.log" for additional information.
[  1292.580] (EE)
[  1292.580] (EE) Server terminated with error (1). Closing log file.
====

Should I be able to use this video card? I've done some googling, and
apparently at least some Linux people are using it.

It's not a huge deal if it doesn't work; I can install a Radeon HD 4670
that I know works. If I've mis-configured something, though, I'd like to
fix it.

Thanks for any comments!
-- 
Richard Kuhns <r...@wintek.com>     Main Number:      765-742-8428
Wintek Corporation                 Direct:           765-269-8541
427 N 6th Street                   Internet Support: 765-269-8503
Lafayette, IN 47901-2211           Consulting:       765-269-8504
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