VGA distributor hardware detection


Login or Register for Dates, Times and to Reply

 
Thread Tools Search this Thread
Special Forums Hardware VGA distributor hardware detection
# 1  
VGA distributor hardware detection

Hi,

I am trying to find the monitor information attach to my system. To get the detail I have decoded the information available in edid file using edid-decode utility.

The file is available at /sys/devices/pci0000:00/0000:00:01.0/drm/card0/card0-VGA-1/edid

After decoding edid file I get the attached monitor details. Now I have situation where I am using VGA distributor which split the signal and I can connect multiple monitor through it.After doing this I am still getting the same monitor information in my edid file.Second monitor detail is missing from it. I try to restart the system and found that file empty edid file is generated if two monitor is connected.

I have concluded that after starting the system some utility is actually creating the edid file but I am not sure which one is doing this.

Can anyone let me know how to detect if multiple monitor is connected to my system through VGA distributor ? I am using Ubuntu 14.04 on HP machine.

Any help or suggestion is highly appreciated. Smilie



Thanks
# 2  
I am fairly certain what you want isn't possible with a VGA distributor. You'd need separate video cards to get different EDID data through each.
This User Gave Thanks to Corona688 For This Post:
# 3  
Thanks.

Is there any other method to identified if VGA distributor is connected to my system Or Any method to forcefully generate edid file.
# 4  
Attach only one monitor at a time, have the edid file created at startup, and save it with a meaningful name.
I'd guess that with multiple monitors attached via a distributor the info (if any!) flowing back to the host will be promiscuous and ambiguous due to collisions.
# 5  
Quote:
Originally Posted by diehard
Is there any other method to identified if VGA distributor is connected to my system
No.
Quote:
Or Any method to forcefully generate edid file.
Pretty much "do it yourself".

Perhaps you could disable detection and use a profile you know works for all monitors.
Login or Register for Dates, Times and to Reply

Previous Thread | Next Thread
Thread Tools Search this Thread
Search this Thread:
Advanced Search

Test Your Knowledge in Computers #159
Difficulty: Easy
The Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP) need two ports per host for full-duplex, bidirectional traffic.
True or False?

9 More Discussions You Might Find Interesting

1. Linux

Vga passtrough with only one monitor,is possible?

I have one monitor,two vga cards,one is nvidia(host) the other ati rs450(guest),I use this script for use a vm windows with a native gpu(the ati rs450) I see this video and seems to be possible using only one monitor,but I don't understand how to do The video QEMU VGA passthrough without a... (0 Replies)
Discussion started by: Linusolaradm1
0 Replies

2. AIX

No VGA card and I need to know server IP

Dear All, I have Power7 server, and I want to know its IP address. The server have no VGA card, only serial port. Kindly tell me how to know its IP using serial cable? Thanks a lot (5 Replies)
Discussion started by: Mohannad
5 Replies

3. Programming

vga assembly question

Im trying to make a vga program for linux Im wondering if anyone knows of a simple document on the subject or if someone could show me some basics. What system calls should I use what parameters should I give them. How do I draw a line of pixels green after in vga mode. I prefer nasm but I can use... (2 Replies)
Discussion started by: Errigour
2 Replies

4. Programming

Parallel Processing Detection and Program Return Value Detection

Hey, for the purpose of a research project I need to know if a specific type of parallel processing is being utilized by any user-run programs. Is there a way to detect whether a program either returns a value to another program at the end of execution, or just utilizes any form of parallel... (4 Replies)
Discussion started by: azar.zorn
4 Replies

5. UNIX for Dummies Questions & Answers

need help changing the vga mode

hello all, I am trying to interface the VGA, however, it appears to be in text mode. I want to get it into mode 13h (320x240) but I can't seem to achieve this I looked at here to see which registers I need to set but I've for some reason I cant get it to work. Are these all the registers I need to... (5 Replies)
Discussion started by: neur0n
5 Replies

6. Solaris

Ultra 10 Creator 3D: enabling onboard VGA

Hello, I have an Ultra 10 Creator 3D working fine with a Sun monitor, but I'd like to use it with a VGA flat panel (it would be great if I could use both screens simultaneously). As I've read in a previous thread (https://www.unix.com/sun-solaris/14875-creator-3d-video-adapter.html) this box... (1 Reply)
Discussion started by: ama
1 Replies

7. Solaris

Ultra 10 -> VGA Monitor Help

I have a vga card in my Ultra 10. How can I activate it in my Ultra 10 box which is currently still running off the Sun CRT Monitor port? (2 Replies)
Discussion started by: revzalot
2 Replies

8. UNIX Desktop Questions & Answers

Vga Installation

what is the procedure of installing a vga on the unix desktop? i have a dell machine optiplex gx 520 and it doesnt pick the vga i tryed other vga s but graphics are so poor? pls help. (2 Replies)
Discussion started by: Linus Aloo
2 Replies

9. Solaris

VGA to 13W UPA graphics

Hello, I have a Sun Ultra2 with a 13W type Creator Graphics card. My old Sun monitor has failed. Is the an adaptor or cable that I could find which will allow me to use a VGA type monitor? If so who sells them? Thanks, Jim (2 Replies)
Discussion started by: stocksj
2 Replies

Featured Tech Videos