black screen upon turn on pc with monitor off?

[ivtec]

Hi guys can someone please tell me why when i turn on PC i have to have the Monitor on other wise the monitor stays black displays 680x400 resolution,i have to turn off and on in the push buttom, when i have the pc configured for 1920x1080 in linuxmint mater 14? any input i'd apreciate

[ivtec]

Re: black screen upon turn on pc with monitor off?

Hi guys can someone please tell me why when i turn on PC i have to have the Monitor on other wise the monitor stays black displays 680x400 resolution,i have to turn off and on in the push buttom, when i have the pc configured for 1920x1080 in linuxmint mater 14? any input i'd apreciate

Hi guys no aknowledge of my problem?no help at all!

[Mad_Professor]

Re: black screen upon turn on pc with monitor off?

Didn't stick out in bold as a new thread.

Well if you leave the monitor off during the boot up into windows or linux, the O/S will assume there is no display attached because it probe for EDID and didn't get a response. Newer monitors have EDID on the standby voltage to fix this issue.

http://en.wikipedia.org/wiki/Extende...ification_data

[ivtec]

Re: black screen upon turn on pc with monitor off?

Didn't stick out in bold as a new thread.

Well if you leave the monitor off during the boot up into windows or linux, the O/S will assume there is no display attached because it probe for EDID and didn't get a response. Newer monitors have EDID on the standby voltage to fix this issue.

http://en.wikipedia.org/wiki/Extende...ification_data

Thanks for your explanation,my display monitor is a Cob Hd 15" TV with VGA and HDMI i have it connected to VGA and the 36''Sony with DVI.
i guess there is no EDID for this cheap display,
well i have to remember to turn on the monitor prior to the pc or in case i forget just reboot it. thanks anyway.

[ivtec]

Re: black screen upon turn on pc with monitor off?

Thanks for your explanation,my display monitor is a Cob Hd 15" TV with VGA and HDMI i have it connected to VGA and the 36''Sony with DVI.
i guess there is no EDID for this cheap display,
well i have to remember to turn on the monitor prior to the pc or in case i forget just reboot it. thanks anyway.

Hi guys i also found this article about EDID,


http://www.extron.com/company/article.aspx?id=uedid

[Time2Retire]

Re: black screen upon turn on pc with monitor off?

What type of video card do you have? I have a nVidia card on Linux Mint, and the nvidia-settings program will give me an EDID. It will output it in either ASCII or binay, but I haven't figured out what to do with it after I get it.

There also is a Linux program that will fetch your EDID, and output some settings that you would insert into your xorg.conf file. When I ran it on mine, it gave me an error:

http://maxolasersquad.blogspot.com/2...formation.html

You may first need to create an xorg.conf file. To do that you first need to shut down X:

sudo service mdm stop

This will shut down the X server. If you don't get a login prompt, switch to a different terminal with this key combo:

Ctrl+Alt+F1

You can use F1 thru F8. Then login and create a xorg.conf file with this command:

sudo Xorg -configure

This will create a file in your home directory named xorg.conf.new. Start the Xserver again or just reboot. Then you can open your new file and add the info that get-edid gave you. You will need root privileges, so open it like this (from a terminal):

gksu gedit ~/xorg.conf.new

After adding the new info, save and close it. Then copy it to the correct folder with this command:

sudo cp ~/xorg.conf.new /etc/X11/xorg.conf

Restart the Xserver again or reboot. If the desktop doesn't start, then it rejected your changes. You will have to deactivate your newly-created xorg.conf file. Do this from a terminal by renaming it:

sudo mv /etc/X11/xorg.conf /etc/X11/xorg.conf.bak

Then restart X again:

sudo service mdm start

More info on get-edid:

http://manpages.ubuntu.com/manpages/...get-edid.1.htm