i was trying to get it to work with udlfb, since this seems to be a "Bad Idea" (tm), I tried udl :
Code:
$ lsmod | grep "udl"
udl 32768 1
drm_kms_helper 147456 2 udl,i915
drm 364544 7 udl,i915,drm_kms_helper
Turning ON the "Unknown Display" in Displays, the system becomes nearly unresponsive, and the display never actually turns on.
syslog is spammed with :
Code:
[ 104.344500] [drm] wait for urb interrupted: ffffffc2 available: 0
[ 105.344655] [drm] wait for urb interrupted: ffffffc2 available: 0
[ 106.344680] [drm] wait for urb interrupted: ffffffc2 available: 0
[ 107.356719] [drm] wait for urb interrupted: ffffffc2 available: 0
[ 107.456677] EDID block is all zeroes
[ 107.456687] udl 2-1.1:1.0: DVI-I-1: EDID invalid.
[ 108.564776] [drm] wait for urb interrupted: ffffffc2 available: 0
[ 109.656798] [drm] wait for urb interrupted: ffffffc2 available: 0
[ 110.696848] [drm] wait for urb interrupted: ffffffc2 available: 0
[ 111.712881] [drm] wait for urb interrupted: ffffffc2 available: 0
[ 112.728887] [drm] wait for urb interrupted: ffffffc2 available: 0
[ 113.748959] [drm] wait for urb interrupted: ffffffc2 available: 0
[ 114.776999] [drm] wait for urb interrupted: ffffffc2 available: 0
[ 115.797050] [drm] wait for urb interrupted: ffffffc2 available: 0
[ 116.817072] [drm] wait for urb interrupted: ffffffc2 available: 0
[ 117.837127] [drm] wait for urb interrupted: ffffffc2 available: 0
[ 118.857171] [drm] wait for urb interrupted: ffffffc2 available: 0
[ 119.873186] [drm] wait for urb interrupted: ffffffc2 available: 0
[ 120.893225] [drm] wait for urb interrupted: ffffffc2 available: 0
[ 121.925288] [drm] wait for urb interrupted: ffffffc2 available: 0
[ 122.945319] [drm] wait for urb interrupted: ffffffc2 available: 0
[ 123.973343] [drm] wait for urb interrupted: ffffffc2 available: 0
[ 124.431887] EDID block is all zeroes
[ 124.431904] udl 2-1.1:1.0: DVI-I-1: EDID invalid.