Raspberry Pi 2 - Xorg issues

[Trevor Roydhouse]

uname:

FreeBSD 11.0-CURRENT #0 r282694: Sun May 10 04:33:02 UTC 2015

dmesg:

fb0: <BCM2835 VT framebuffer driver> on ofwbus0
fbd0 on fb0
VT: initialize with new VT driver "fb".
fb0: 1824x984(1824x984 at 0,0) 24bpp
fb0: fbswap: 1, pitch 5472, base 0x3d359000, screen_size 5428224

Xorg.conf:

Section "Screen"
     Identifier  "Screen"
     Device      "Generic FB"
     Monitor     "Monitor"
     DefaultDepth 16

     SubSection "Display"
       Depth      16
     EndSubsection
EndSection

Produces Xorg.0.log:

[  1051.191] (II) scfb: driver for wsdisplay framebuffer: scfb
[  1051.272] (--) Using syscons driver with X support (version 2.0)
[  1051.272] (--) using VT number 5
[  1051.272] (WW) Falling back to old probe method for scfb
[  1051.272] scfb trace: probe start
[  1051.272] (II) scfb(0): using default device
[  1051.273] scfb trace: probe done
[  1051.273] (WW) VGA arbiter: cannot open kernel arbiter, no multi-card 
support
[  1051.273] scfb: PreInit 0
[  1051.273] (II) scfb(0): Using: depth (24),   width (1824),    height 
(984)
[  1051.273] (EE) scfb(0): specified depth (16) or bpp (16) doesn't 
match framebuffer depth (24)
[  1051.273] (II) UnloadModule: "scfb"
[  1051.273] (EE) Screen(s) found, but none have a usable configuration.


Xorg.conf:

Section "Screen"
     Identifier  "Screen"
     Device      "Generic FB"
     Monitor     "Monitor"
     DefaultDepth 24

     SubSection "Display"
       Depth      24
     EndSubsection
EndSection

Produces Xorg.0.log:

[  1286.519] (II) scfb: driver for wsdisplay framebuffer: scfb
[  1286.640] (--) Using syscons driver with X support (version 2.0)
[  1286.640] (--) using VT number 5
[  1286.640] (WW) Falling back to old probe method for scfb
[  1286.641] scfb trace: probe start
[  1286.641] (II) scfb(0): using default device
[  1286.641] scfb trace: probe done
[  1286.641] (WW) VGA arbiter: cannot open kernel arbiter, no multi-card 
support
[  1286.641] scfb: PreInit 0
[  1286.641] (II) scfb(0): Using: depth (24),   width (1824),    height 
(984)
[  1286.641] (EE) scfb(0): specified depth (24) or bpp (32) doesn't 
match framebuffer depth (24)
[  1286.641] (II) UnloadModule: "scfb"
[  1286.642] (EE) Screen(s) found, but none have a usable configuration.

Solution to get X up:

Leave out DefaultDepth nn in the Screen section, but this yields very 
slow motion screen draws and long cursor tails. However, if I run a find 
/ in an xterm, screen draws return to normal until find finishes... weird.

Any other solutions?

-- 
Trevor Roydhouse
BJuris, LLB, LLM (UNSW)
Systems Developer
Australasian Legal Information Institute    Web  : www.austlii.edu.au