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Thread: Blank hdmi external display outside of X

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hi there.

it's more hardware problem ubuntu problem, think, maybe there workaround.

i'm using hp dv7-1145ef laptop hdmi output. i'm using external display (hp 2275w) dvi input. both linked hdmi/dvi cable.

i configured x , dual screen works fine. but, it's working under x.

if switch console tty external screen goes sleep mode (not same if unplug it). seems gets no signal laptop.

also, external screen stays blank during booting process. gets signal when gdm fired up.

maybe that's normal (it's first external screen plugged on laptop). maybe it's due hdmi interface.

there way configure can see boot process (because of time let laptop closed papers on ).

best regards.

hi

know it's old thread, have still same problem maverick. i've hp 8710w laptop connected dell monitor u2410 via hdmi (laptop) dvi (dell monitor) cable. here issues :

power on hp laptop, can see hp splash on dell

1st issue : grub boot menu displayed on laptop screen while dell goes sleep mode. boot sequence displayed on hp laptop screen.

dell monitor wake when entering gnome startup (before i've configured dell monitor in nvidia-settings). note have no issue x/gnome on dell.

2nd issue: if press ctrl-alt-fn go console, 1 more time displayed on hp laptop screen , nothing on dell.

3rd issue: leaving gnome session restart makes goes black. laptop still on nothing on screens. typing blindly commands nothing. solution reset laptop power button.

don't know if these different causes giving these issues, appreciate here have hint have solved 1 of them.



Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Hardware [all variants] Blank hdmi external display outside of X


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