Question

2

Upgraded to 13.10, screen regularly flashes between red, green, blue, greys after boot. No X11 or Unity

rated 0 times [ 2] [ 0] / answers: 1 / hits: 3571 / 2 Years ago, thu, april 28, 2022, 9:05:57

I have a Z77 board with a GeForce GTX 670. My monitor is a Korean 27" IPS with only a single DVI Dual-link connection, and a resolution of 2560x1440. After upgrading to 13.10 today, Unity and the X Window System are non-functional. After booting up, all I see is a screen that flashes between red, green, blue, various blacks, greys, and whites at regular intervals. From here I can switch to command line, and that displays fine, but starting lightdm takes me back to the flashing colors. I had this problem on 13.04, but I was able to fix it by editing xorg.conf with the proper information about my monitor. No such luck for 13.10. I have tried:

installing different drivers (i.e. nvidia-current, nvidia-experimental)

plugging into both DVI ports on my 670

editing xorg.conf myself

letting the Nvidia package do the xorg.conf configuration automatically

Admittedly I know very little about X Window system, and all my editing was based on xorg.conf files posted by others that were claimed to work, none of which used the same combination of monitor and video card as mine. I'm out of ideas at this point, input from someone who knows what they're doing would be greatly appreciated.

Answers

Only authorized users can answer the question. Please sign in first, or register a free account.

errettas

Add To Favorites

Follow

Total Points: 160

Total Questions: 118

Total Answers: 91

Location: Laos

Member since Fri, Sep 11, 2020

4 Years ago

errettas questions

1 Ubuntu 22.04 Firefox Snap breaks KeePassXC integration and other NativeMessaging protocol 25 apps

Fri, Apr 21, 23, 08:09, 1 Year ago

1 How do I change size of app icons in Activity Overview?

Tue, Jan 10, 23, 22:58, 1 Year ago

1 Not able to access files on XUbuntu box from Ubuntu box

Sun, Aug 22, 21, 23:47, 3 Years ago

1 How to remove a specific part of the file name from a lot of files

Mon, Nov 28, 22, 06:42, 1 Year ago

1 The cleanest way to compile Ubuntu from scratch?

Tue, Aug 3, 21, 20:06, 3 Years ago

View All

answered 2 Years ago farnic · Accepted Answer

Article explaining the issue and solution: http://neogregious.blogspot.com/2013/05/korean-ips-monitors-and-nvidia-under.html

Here is a short summary of the solution(credit goes to Greg Fawcett):

Create an xorg conf:

sudo nvidia-xconfig

Now you need to edit the new xorg.conf file:

sudo vi /etc/X11/xorg.conf

Find the section below, and add the - Option "IgnoreEDIDChecksum" "DFP" - line :

Section "Device"

    Identifier     "Device0"

    Driver         "nvidia"

    VendorName     "NVIDIA Corporation"

    Option         "IgnoreEDIDChecksum" "DFP"

EndSection

Save the file, and reboot.