xrandr offers wrong video size for dual display

[dep]

[SOLVED, though i do not know why or how]

Greetings.

I thought this would be easy. I have a two-monitor setup. Until Friday it involved a 1920x1200 monitor and a 1920x1080. The latter was the master, and is a 27-inch LCD. The former was just a 24-inch LCD. I was given a second 27-inch 1920x1080 monitor. I shut down, installed the new monitor in place of the 1920x1200 one. Started back up.

Previously, xrandr reported a 1920x2280 monitor when I had both attached, which was correct. But now it reports 1936x 2152, instead of 1920x2160. Nor can I find a place to force the correct geometry. Additionally, the new monitor, which works perfectly standalone, has strange ghosts and such.

Video card is a GeForce 630; both monitors are connected through its DVD-D outputs. I am using what I believe is the current nVidia driver as opposed to the Xorg version.

My sense is that there is a reconfiguration option that will fix this, but I have no notion what it might be. Additionally, the nVidia configuration program throws an error, to wit:

The program 'nvidia-settings' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadRequest (invalid request code or no such operation)'.
(Details: serial 668 error_code 1 request_code 135 minor_code 19)
(Note to programmers: normally, X errors are reported asynchronously;
that is, you will receive the error a while after causing it.
To debug your program, run it with the --sync command line
option to change this behavior. You can then get a meaningful
backtrace from your debugger if you break on the gdk_x_error() function.)

This error predates the change in monitors and the troubled monitor performance, however.

Anybody know how to fix this? (No "buy a different video card" is not what I'm looking for!)

Thanks in advance.

[woodsmoke]

Hi, it just so happens that I did the xrandr thing for an added vertical monitor thing, another thread, just search for xrandr, and ran into the same problem. I had the 660 video card, yes they are all iterations of the 600, and each have their quirks, but what I did was go to the xorg driver and things are just marvy.

I then went to a toshiba laptop which is now what I will be using exclusively with the vertical monitor and did the same thing and again, works marvy....

Now, mine is not DVD and it is a simple rotation of the screen but... something to maybe try.

woodsmoke

[dep]

Thanks very much. Have you a recipe for reverting to the nouveau driver? everything i've seen is pretty draconian.

[woodsmoke]

Hi,

go to settings or Vvidia thingy and pick the xorg driver that is presented........

rather like "momma knows best"............ Kubuntu will not steer you wrong! lol

woodsmoke

[dep]

[SOLVED] but i don't know how

employed the time-honored linux system of "i dunno -- i just did some stuff and then it worked." i know it included the configurator in kcontrol, sudo dpkg-reconfigure xserver-xorg, and something involving nvidia-settings run as root. anyway, it's working, though i'm not entirely (or even a little bit) sure how, or why.