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Date:      Mon, 20 Mar 2017 13:04:26 -0500
From:      Bob Willcox <bob@immure.com>
To:        freebsd-x11@freebsd.org
Subject:   Xorg fails w/scfb: Cannot run in framebuffer mode. Please specify busIDs
Message-ID:  <20170320180426.GA73014@rancor.immure.com>

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I had to reboot my system this morning (power outage over the weekend forced
it) and now X won't start, failing with these error msgs from the Xorg.log:

[   143.327] (EE) open /dev/dri/card0: No such file or directory                                                                                                
[   143.327] (WW) Falling back to old probe method for modesetting                                                                                              
[   143.327] (EE) open /dev/dri/card0: No such file or directory                                                                                                
[   143.327] (WW) Falling back to old probe method for scfb                                                                                                     
[   143.327] scfb trace: probe start                                                                                                                            
[   143.327] (II) scfb(1): using default device                                                                                                                 
[   143.327] scfb trace: probe done                                                                                                                             
[   143.327] (WW) VGA arbiter: cannot open kernel arbiter, no multi-card support                                                                                
[   143.327] (EE) Screen 0 deleted because of no matching config section.                                                                                       
[   143.327] (II) UnloadModule: "modesetting"                                                                                                                   
[   143.327] (EE)                                                                                                                                               

Fatal server error:                                                                                                                       
[   143.327] (EE) Cannot run in framebuffer mode. Please specify busIDs        for all framebuffer devices                                                      
[   143.328] (EE)                                                                                                                                               
[   143.328] (EE)

This is on an Intel NUC system with a i7-5557U (Broadwell) CPU. The uname -a
output is:

FreeBSD tavion.austin.ibm.com 10.3-STABLE FreeBSD 10.3-STABLE #3 r315638: Mon Mar 20 11:44:00 CDT 2017 root@tavion.austin.ibm.com:/usr/obj/usr/src/sys/TAVION  amd64

This system has been running with the scfb frame buffer driver for a couple of
years now with X running fine (if a bit slow).

I just updated my ports 3/14 to revision 436172. Hadn't rebooted till today.

I updated the system this morning hoping that would help, but no such luck as
I still get the same failure.

Note that I am loading the i915kms.ko module as instructed in the
/usr/ports/UPDATING file (have been doing that all along) so it would seem
that I've run into something else.

Also, reading the FreeBSD wiki for SCFB I added this file in
/usr/local/bin/etc/xorg.conf.d/driver-scfb.conf:

Section "Device"                                                                                                                                                
    Identifier  "Card0"                                                                                                                                         
    Driver      "scfb"                                                                                                                                          
EndSection 

Without any descernable change.


Any help on this would be greatly appreciated. This is my office workstation
and not having X running is a real downer.

-- 
Bob Willcox    | You're dead, Jim.
bob@immure.com |       -- McCoy, "The Tholian Web", stardate unknown
Austin, TX     |



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