Monitor doesn't recognise input if powered on after machine

dt97583 · 9 Mar 2013 at 12:16

Hi,

If I power on my machine before turning on my Dell U2312HM then when I do turn the monitor on it goes straight to sleep and only recognises input if switched on before turning my machine on. I've RMA'd one monitor and the same happens with the replacement.

Connected with a DVI cable.

Any ideas?

Thanks

monkeys · 9 Mar 2013 at 17:49

My windows xp and windows 7, goes into default resolution if the PC is turned on before the monitor....and sometimes looses screen setup completely and I have to re-configure.

Generally, I go to screen and click on 'detect' and that works 80% of the time...till it doesn't
Don't bother to 'restore' as it does not work.

Yours is a bit different, I know but inherently related.

nuzik · 9 Mar 2013 at 17:56

you got your monitor plugged in to your correct pot? IE video card not mother board?

dt97583 · 9 Mar 2013 at 18:10

nuzik said:
you got your monitor plugged in to your correct pot? IE video card not mother board?

Yeah as I say it displays fine if turned on before the machine boots.

sadbuttrue · 9 Mar 2013 at 18:39

Go into bios and change "Init Display First" from Auto, or disable Internal graphics entirely. The on-board graphics is taking priority when no monitor is detected by the dedicated graphics card.

dt97583 · 9 Mar 2013 at 20:05

sadbuttrue said:
Go into bios and change "Init Display First" from Auto, or disable Internal graphics entirely. The on-board graphics is taking priority when no monitor is detected by the dedicated graphics card.

You've fixed it! Changed Init Display First from Auto to PEG. Does the internal graphics ever get used e.g. for less graphics intensive activities?

Thank you!!!

sadbuttrue · 9 Mar 2013 at 21:42

Nps.

Internal graphics is only used when you connect a display to it. Some people report better overclocks with it disabled.

dt97583 · 9 Mar 2013 at 21:53

sadbuttrue said:
Nps.

Internal graphics is only used when you connect a display to it. Some people report better overclocks with it disabled.

D'oh. Didn't think about that! Dvi cable connected to GPU and not mobo so internal graphics never used.

Thanks

monkeys · 10 Mar 2013 at 14:52

monkeys said:
My windows xp and windows 7, goes into default resolution if the PC is turned on before the monitor....and sometimes looses screen setup completely and I have to re-configure.

Generally, I go to screen and click on 'detect' and that works 80% of the time...till it doesn't
Don't bother to 'restore' as it does not work.

Yours is a bit different, I know but inherently related.

--------------------

Does anyone have a solution for me?
Cant see any such settings in the bios but does not have inboard graphics, motherboard Asus P5K Premium

marc2003 · 10 Mar 2013 at 16:25

here's a wild suggestion. leave it on standby like 99.9% of other people do.

if you really must turn it off then turn it on before the pc. it can't be that hard to remember.

monkeys · 10 Mar 2013 at 17:09

On standby it works.
My PC is set on auto boot...hence the question