I wish I could say the DVI overlay worked, but it doesn't.  It loads fine, 
and I get the login prompt at the monitor, so basically the tfp410 driver 
seems to work.  But the X-Server unloads claiming it can find no acceptable 
modes.  Here is the the Xorg.0.log <http://paste.ubuntu.com/7045149/>. 

[   136.094] (II) modesetting(0): Supported detailed timing:
[   136.094] (II) modesetting(0): clock: 108.0 MHz   Image Size:  338 x 270 mm
[   136.095] (II) modesetting(0): h_active: 1280  h_sync: 1328  h_sync_end 1440 
h_blank_end 1688 h_border: 0
[   136.095] (II) modesetting(0): v_active: 1024  v_sync: 1025  v_sync_end 1028 
v_blanking: 1066 v_border: 0
[   136.095] (II) modesetting(0): Ranges: V min: 56 V max: 75 Hz, H min: 31 H 
max: 81 kHz, PixClock max 145 MHz
[   136.095] (II) modesetting(0): Monitor name: LCD175M
[   136.096] (II) modesetting(0): Serial No: 3X556306NA
[   136.096] (II) modesetting(0): EDID (in hex):
[   136.096] (II) modesetting(0):       00ffffffffffff0038a3cb6701010101
[   136.096] (II) modesetting(0):       2917010308221b78ea3095a6554b9a25
[   136.096] (II) modesetting(0):       125054bfef80714f814f010101010101
[   136.097] (II) modesetting(0):       010101010101302a009851002a403070
[   136.097] (II) modesetting(0):       1300520e1100001e000000fd00384b1f
[   136.097] (II) modesetting(0):       510e000a202020202020000000fc004c
[   136.097] (II) modesetting(0):       43443137354d0a2020202020000000ff
[   136.098] (II) modesetting(0):       0033583535363330364e410a2020000a
[   136.098] (II) modesetting(0): No remaining probed modes for output DVI-0
[   136.098] (II) modesetting(0): Output DVI-0 connected
[   136.098] (WW) modesetting(0): Unable to find initial modes
[   136.098] (EE) modesetting(0): Output DVI-0 enabled but has no modes
[   136.099] (EE) modesetting(0): No modes.
[   136.099] (II) UnloadModule: "modesetting"
[   136.100] (EE) Screen(s) found, but none have a usable configuration.
[   136.100] (EE) 
Fatal server error:
[   136.100] (EE) no screens found(EE) 
[   136.101] (EE) 
Please consult the The X.Org Foundation support 
         at http://wiki.x.org
 for help. 
[   136.101] (EE) Please also check the log file at "/var/log/Xorg.0.log" for 
additional information.
[   136.102] (EE) 
[   136.194] (EE) Server terminated with error (1). Closing log file.


Without the X server working the whole exercise seems pretty pointless...

Weirdly, if I don't hook up the I2C1 (i.e. just use the included 
cape-bone-dvi-00A0.dts, I get somewhat *better* results.  The X server 
starts up and stays up, but the default resolution of 1152x864 is not 
supported by my VGA monitors. I can xrandr -d :0 -s 1024x768 and get the 
picture.  But it seems like the wrong way to go about it.  xrandr offers a 
few options, but without I2C1 the EDID from the monitor is not read.

I also tried forcing resolution by specifying the LCD-cape-like tilcdc 
panel, but this would lock me into one particular type of monitor, so 
that's not good either.


On Wednesday, March 5, 2014 12:17:19 PM UTC-5, RobertCNelson wrote:
>
> On Wed, Mar 5, 2014 at 10:58 AM, porkupan <vladimi...@gmail.com<javascript:>> 
> wrote: 
> > No, I definitely cannot afford any more bootup delay.  I am already not 
> > meeting my 25 second startup requirement, and I have to figure out why. 
>  The 
> > dmesg is not much help, but it seems that the init scripts are too 
> heavy. 
>
> the biggest delay with ubuntu is usually dhcp. 
>
> I have no problem on adding your custom cape dts, to the build script, 
> then it'll be builtin.. 
>
> Regards, 
>
> -- 
> Robert Nelson 
> http://www.rcn-ee.com/ 
>

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