No HDMI console after upgrading Angstrom

Hi All,
I built Angstrom v2013.12 (the plain systemd console only image) from source recently and went to a lot of trouble to finally figure out how to flash it on the eMMC! Everything works great, except there is no console on my monitor attached via HDMI. My monitor detects that there is something plugged in at the other end, but receives no video signal.

My EDID looks like this (so it’s obviously detecting the monitor at the other end)

root@beaglebone:~# parse-edid < /sys/class/drm/card0/card0-HDMI-A-1/edid
Checksum Correct

Section “Monitor”
Identifier “SMBX2250”
ModelName “SMBX2250”
VendorName “SAM”

Monitor Manufactured week 31 of 2010

EDID version 1.3

Digital Display

DisplaySize 480 270
Gamma 2.20
Option “DPMS” “true”
Horizsync 30-81
VertRefresh 56-75

Maximum pixel clock is 170MHz

#Not giving standard mode: 1152x864, 75Hz
#Not giving standard mode: 1280x800, 60Hz
#Not giving standard mode: 1280x960, 60Hz
#Not giving standard mode: 1280x1024, 60Hz
#Not giving standard mode: 1440x900, 60Hz
#Not giving standard mode: 1440x900, 75Hz
#Not giving standard mode: 1600x1200, 60Hz
#Not giving standard mode: 1680x1050, 60Hz

#Extension block found. Parsing…
Modeline “Mode 10” 74.25 1920 2448 2492 2640 540 542 547 562 +hsync +vsync interlace
Modeline “Mode 0” 148.50 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync
Modeline “Mode 1” 74.25 1280 1390 1430 1650 720 725 730 750 +hsync +vsync
Modeline “Mode 2” 148.500 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync
Modeline “Mode 3” 74.250 1280 1390 1420 1650 720 725 730 750 +hsync +vsync
Modeline “Mode 4” 148.500 1920 2448 2492 2640 1080 1084 1089 1125 +hsync +vsync
Modeline “Mode 5” 74.250 1920 2008 2052 2200 1080 1082 1087 1125 +hsync +vsync interlace
Modeline “Mode 6” 74.250 1920 2448 2492 2640 1080 1082 1089 1125 +hsync +vsync interlace
Modeline “Mode 7” 74.250 1280 1720 1760 1980 720 725 730 750 +hsync +vsync
Modeline “Mode 8” 27.000 720 732 796 864 576 581 586 625 -hsync -vsync
Modeline “Mode 9” 27.027 720 736 798 858 480 489 495 525 -hsync -vsync
Modeline “Mode 11” 74.25 1920 2008 2052 2200 540 542 547 562 +hsync +vsync interlace
Modeline “Mode 12” 74.25 1280 1720 1760 1980 720 725 730 750 +hsync +vsync
Modeline “Mode 13” 27.00 720 732 796 864 576 581 586 625 -hsync -vsync
Option “PreferredMode” “Mode 10”
EndSection

Interestingly, the graphics device appears to be disabled

root@beaglebone:~# cat /sys/class/drm/card0/card0-HDMI-A-1/enabled
disabled

And if i try and modprobe the omapfb driver,
root@beaglebone:~# modprobe omapfb
modprobe: ERROR: could not insert ‘omapfb’: No such device

And there’s some interesting info in dmesg:

[ 2.227182] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
[ 2.234130] [drm] No driver support for vblank timestamp query.
[ 2.290566] ------------[ cut here ]------------
[ 2.290604] WARNING: at drivers/gpu/drm/tilcdc/tilcdc_crtc.c:251 tilcdc_crtc_mode_set+0x3f/0x45a()
[ 2.290613] Modules linked in:
[ 2.290658] [] (unwind_backtrace+0x1/0x88) from [] (warn_slowpath_common+0x33/0x48)
[ 2.290680] [] (warn_slowpath_common+0x33/0x48) from [] (warn_slowpath_null+0xf/0x14)
[ 2.290701] [] (warn_slowpath_null+0xf/0x14) from [] (tilcdc_crtc_mode_set+0x3f/0x45a)
[ 2.290736] [] (tilcdc_crtc_mode_set+0x3f/0x45a) from [] (drm_crtc_helper_set_mode+0x145/0x22e)
[ 2.290760] [] (drm_crtc_helper_set_mode+0x145/0x22e) from [] (drm_crtc_helper_set_config+0x41b/0x5e0)
[ 2.290782] [] (drm_crtc_helper_set_config+0x41b/0x5e0) from [] (drm_fb_helper_set_par+0x3d/0x74)
[ 2.290811] [] (drm_fb_helper_set_par+0x3d/0x74) from [] (fbcon_init+0x223/0x2e4)
[ 2.290845] [] (fbcon_init+0x223/0x2e4) from [] (visual_init+0x71/0xb4)
[ 2.290869] [] (visual_init+0x71/0xb4) from [] (do_bind_con_driver+0x11d/0x20a)
[ 2.290889] [] (do_bind_con_driver+0x11d/0x20a) from [] (do_take_over_console+0x23/0x26)
[ 2.290909] [] (do_take_over_console+0x23/0x26) from [] (do_fbcon_takeover+0x33/0x78)
[ 2.290936] [] (do_fbcon_takeover+0x33/0x78) from [] (notifier_call_chain+0x23/0x38)
[ 2.291028] [] (notifier_call_chain+0x23/0x38) from [] (__blocking_notifier_call_chain+0x27/0x36)
[ 2.291050] [] (__blocking_notifier_call_chain+0x27/0x36) from [] (blocking_notifier_call_chain+0xf/0x14)
[ 2.291072] [] (blocking_notifier_call_chain+0xf/0x14) from [] (register_framebuffer+0x139/0x17c)
[ 2.291094] [] (register_framebuffer+0x139/0x17c) from [] (drm_fb_helper_single_fb_probe+0x105/0x180)
[ 2.291117] [] (drm_fb_helper_single_fb_probe+0x105/0x180) from [] (drm_fb_helper_initial_config+0xfd/0x138)
[ 2.291141] [] (drm_fb_helper_initial_config+0xfd/0x138) from [] (drm_fbdev_cma_init+0x73/0x9a)
[ 2.291169] [] (drm_fbdev_cma_init+0x73/0x9a) from [] (tilcdc_load+0x3d9/0x3fe)
[ 2.291196] [] (tilcdc_load+0x3d9/0x3fe) from [] (drm_get_platform_dev+0x9f/0x148)
[ 2.291225] [] (drm_get_platform_dev+0x9f/0x148) from [] (driver_probe_device+0x6b/0x14c)
[ 2.291246] [] (driver_probe_device+0x6b/0x14c) from [] (__driver_attach+0x35/0x48)
[ 2.291267] [] (__driver_attach+0x35/0x48) from [] (bus_for_each_dev+0x3b/0x46)
[ 2.291287] [] (bus_for_each_dev+0x3b/0x46) from [] (bus_add_driver+0x89/0x148)
[ 2.291307] [] (bus_add_driver+0x89/0x148) from [] (driver_register+0x4b/0x96)
[ 2.291328] [] (driver_register+0x4b/0x96) from [] (do_one_initcall+0x63/0xe8)
[ 2.291362] [] (do_one_initcall+0x63/0xe8) from [] (kernel_init_freeable+0xc1/0x150)
[ 2.291396] [] (kernel_init_freeable+0xc1/0x150) from [] (kernel_init+0x7/0x90)
[ 2.291425] [] (kernel_init+0x7/0x90) from [] (ret_from_fork+0x11/0x34)
[ 2.291434] —[ end trace 0379b1c6e5497dcb ]—
[ 2.291458] [drm:drm_crtc_helper_set_config] ERROR failed to set mode on [CRTC:3]
[ 2.291475] fbcon_init: detected unhandled fb_set_par error, error code -22
[ 2.291663] ------------[ cut here ]------------
[ 2.291685] WARNING: at drivers/gpu/drm/tilcdc/tilcdc_crtc.c:251 tilcdc_crtc_mode_set+0x3f/0x45a()
[ 2.291692] Modules linked in:
[ 2.291716] [] (unwind_backtrace+0x1/0x88) from [] (warn_slowpath_common+0x33/0x48)
[ 2.291735] [] (warn_slowpath_common+0x33/0x48) from [] (warn_slowpath_null+0xf/0x14)
[ 2.291755] [] (warn_slowpath_null+0xf/0x14) from [] (tilcdc_crtc_mode_set+0x3f/0x45a)
[ 2.291780] [] (tilcdc_crtc_mode_set+0x3f/0x45a) from [] (drm_crtc_helper_set_mode+0x145/0x22e)
[ 2.291803] [] (drm_crtc_helper_set_mode+0x145/0x22e) from [] (drm_crtc_helper_set_config+0x41b/0x5e0)
[ 2.291826] [] (drm_crtc_helper_set_config+0x41b/0x5e0) from [] (drm_fb_helper_pan_display+0x45/0x60)
[ 2.291848] [] (drm_fb_helper_pan_display+0x45/0x60) from [] (fb_pan_display+0x89/0xba)
[ 2.291871] [] (fb_pan_display+0x89/0xba) from [] (bit_update_start+0x11/0x22)
[ 2.291892] [] (bit_update_start+0x11/0x22) from [] (fbcon_switch+0x2bd/0x2ec)
[ 2.291912] [] (fbcon_switch+0x2bd/0x2ec) from [] (redraw_screen+0xad/0x158)
[ 2.291931] [] (redraw_screen+0xad/0x158) from [] (fbcon_prepare_logo+0x1ad/0x234)
[ 2.291952] [] (fbcon_prepare_logo+0x1ad/0x234) from [] (fbcon_init+0x281/0x2e4)
[ 2.291975] [] (fbcon_init+0x281/0x2e4) from [] (visual_init+0x71/0xb4)
[ 2.291996] [] (visual_init+0x71/0xb4) from [] (do_bind_con_driver+0x11d/0x20a)
[ 2.292015] [] (do_bind_con_driver+0x11d/0x20a) from [] (do_take_over_console+0x23/0x26)
[ 2.292034] [] (do_take_over_console+0x23/0x26) from [] (do_fbcon_takeover+0x33/0x78)
[ 2.292055] [] (do_fbcon_takeover+0x33/0x78) from [] (notifier_call_chain+0x23/0x38)
[ 2.292078] [] (notifier_call_chain+0x23/0x38) from [] (__blocking_notifier_call_chain+0x27/0x36)
[ 2.292099] [] (__blocking_notifier_call_chain+0x27/0x36) from [] (blocking_notifier_call_chain+0xf/0x14)
[ 2.292119] [] (blocking_notifier_call_chain+0xf/0x14) from [] (register_framebuffer+0x139/0x17c)
[ 2.292140] [] (register_framebuffer+0x139/0x17c) from [] (drm_fb_helper_single_fb_probe+0x105/0x180)
[ 2.292163] [] (drm_fb_helper_single_fb_probe+0x105/0x180) from [] (drm_fb_helper_initial_config+0xfd/0x138)
[ 2.292185] [] (drm_fb_helper_initial_config+0xfd/0x138) from [] (drm_fbdev_cma_init+0x73/0x9a)
[ 2.292209] [] (drm_fbdev_cma_init+0x73/0x9a) from [] (tilcdc_load+0x3d9/0x3fe)
[ 2.292233] [] (tilcdc_load+0x3d9/0x3fe) from [] (drm_get_platform_dev+0x9f/0x148)
[ 2.292256] [] (drm_get_platform_dev+0x9f/0x148) from [] (driver_probe_device+0x6b/0x14c)
[ 2.292276] [] (driver_probe_device+0x6b/0x14c) from [] (__driver_attach+0x35/0x48)
[ 2.292296] [] (__driver_attach+0x35/0x48) from [] (bus_for_each_dev+0x3b/0x46)
[ 2.292316] [] (bus_for_each_dev+0x3b/0x46) from [] (bus_add_driver+0x89/0x148)
[ 2.292335] [] (bus_add_driver+0x89/0x148) from [] (driver_register+0x4b/0x96)
[ 2.292354] [] (driver_register+0x4b/0x96) from [] (do_one_initcall+0x63/0xe8)
[ 2.292379] [] (do_one_initcall+0x63/0xe8) from [] (kernel_init_freeable+0xc1/0x150)
[ 2.292403] [] (kernel_init_freeable+0xc1/0x150) from [] (kernel_init+0x7/0x90)
[ 2.292424] [] (kernel_init+0x7/0x90) from [] (ret_from_fork+0x11/0x34)
[ 2.292431] —[ end trace 0379b1c6e5497dcc ]—
[ 2.292445] [drm:drm_crtc_helper_set_config] ERROR failed to set mode on [CRTC:3]
[ 2.305370] Console: switching to colour frame buffer device 160x45
[ 2.305426] ------------[ cut here ]------------
[ 2.305446] WARNING: at drivers/gpu/drm/tilcdc/tilcdc_crtc.c:251 tilcdc_crtc_mode_set+0x3f/0x45a()
[ 2.305454] Modules linked in:
[ 2.305478] [] (unwind_backtrace+0x1/0x88) from [] (warn_slowpath_common+0x33/0x48)
[ 2.305497] [] (warn_slowpath_common+0x33/0x48) from [] (warn_slowpath_null+0xf/0x14)
[ 2.305517] [] (warn_slowpath_null+0xf/0x14) from [] (tilcdc_crtc_mode_set+0x3f/0x45a)
[ 2.305541] [] (tilcdc_crtc_mode_set+0x3f/0x45a) from [] (drm_crtc_helper_set_mode+0x145/0x22e)
[ 2.305565] [] (drm_crtc_helper_set_mode+0x145/0x22e) from [] (drm_crtc_helper_set_config+0x41b/0x5e0)
[ 2.305587] [] (drm_crtc_helper_set_config+0x41b/0x5e0) from [] (drm_fb_helper_pan_display+0x45/0x60)
[ 2.305607] [] (drm_fb_helper_pan_display+0x45/0x60) from [] (fb_pan_display+0x89/0xba)
[ 2.305628] [] (fb_pan_display+0x89/0xba) from [] (bit_update_start+0x11/0x22)
[ 2.305648] [] (bit_update_start+0x11/0x22) from [] (fbcon_switch+0x2bd/0x2ec)
[ 2.305668] [] (fbcon_switch+0x2bd/0x2ec) from [] (redraw_screen+0xad/0x158)
[ 2.305686] [] (redraw_screen+0xad/0x158) from [] (do_bind_con_driver+0x19f/0x20a)
[ 2.305704] [] (do_bind_con_driver+0x19f/0x20a) from [] (do_take_over_console+0x23/0x26)
[ 2.305723] [] (do_take_over_console+0x23/0x26) from [] (do_fbcon_takeover+0x33/0x78)
[ 2.305745] [] (do_fbcon_takeover+0x33/0x78) from [] (notifier_call_chain+0x23/0x38)
[ 2.305766] [] (notifier_call_chain+0x23/0x38) from [] (__blocking_notifier_call_chain+0x27/0x36)
[ 2.305787] [] (__blocking_notifier_call_chain+0x27/0x36) from [] (blocking_notifier_call_chain+0xf/0x14)
[ 2.305807] [] (blocking_notifier_call_chain+0xf/0x14) from [] (register_framebuffer+0x139/0x17c)
[ 2.305828] [] (register_framebuffer+0x139/0x17c) from [] (drm_fb_helper_single_fb_probe+0x105/0x180)
[ 2.305851] [] (drm_fb_helper_single_fb_probe+0x105/0x180) from [] (drm_fb_helper_initial_config+0xfd/0x138)
[ 2.305873] [] (drm_fb_helper_initial_config+0xfd/0x138) from [] (drm_fbdev_cma_init+0x73/0x9a)
[ 2.305897] [] (drm_fbdev_cma_init+0x73/0x9a) from [] (tilcdc_load+0x3d9/0x3fe)
[ 2.305919] [] (tilcdc_load+0x3d9/0x3fe) from [] (drm_get_platform_dev+0x9f/0x148)
[ 2.305942] [] (drm_get_platform_dev+0x9f/0x148) from [] (driver_probe_device+0x6b/0x14c)
[ 2.305962] [] (driver_probe_device+0x6b/0x14c) from [] (__driver_attach+0x35/0x48)
[ 2.305982] [] (__driver_attach+0x35/0x48) from [] (bus_for_each_dev+0x3b/0x46)
[ 2.306001] [] (bus_for_each_dev+0x3b/0x46) from [] (bus_add_driver+0x89/0x148)
[ 2.306022] [] (bus_add_driver+0x89/0x148) from [] (driver_register+0x4b/0x96)
[ 2.306041] [] (driver_register+0x4b/0x96) from [] (do_one_initcall+0x63/0xe8)
[ 2.306066] [] (do_one_initcall+0x63/0xe8) from [] (kernel_init_freeable+0xc1/0x150)
[ 2.306092] [] (kernel_init_freeable+0xc1/0x150) from [] (kernel_init+0x7/0x90)
[ 2.306114] [] (kernel_init+0x7/0x90) from [] (ret_from_fork+0x11/0x34)
[ 2.306122] —[ end trace 0379b1c6e5497dcd ]—
[ 2.306137] [drm:drm_crtc_helper_set_config] ERROR failed to set mode on [CRTC:3]
[ 3.378690] tilcdc 4830e000.fb: fb0: frame buffer device
[ 3.384360] tilcdc 4830e000.fb: registered panic notifier
[ 3.390149] [drm] Initialized tilcdc 1.0.0 20121205 on minor 0

Any ideas on how to get the framebuffer console working? My end game is that I want to write some software which will render on the framebuffer, I figure being able to put a text console on there is probably a necessary condition.
Thanks for the help!
KJ