Hello:

Combing through the xorg.0.log file was an important part of being able to set up two Nvidia cards (FX580+FX370) to drive three monitors (Dell P1914S + 2x SyncMaster 940N) in Xinerama mode.

This is under PCLinuxOS.
X Protocol Version 11, Revision 0
Build Operating System: Linux_4.13.5-pclos1 PCLinuxOS
Current Operating System: Linux groucho 4.12.10-pclos1

The one thing that caught my eye was how some entries repeat themselves within the log file.

For example, these lines accounting for the mode setting of each one of my three monitors:

(II) NVIDIA(0): Setting mode "CRT-0:1280x1024"
(II) NVIDIA(1): Setting mode "DFP-0:1280x1024"
(II) NVIDIA(2): Setting mode "CRT-1:1280x1024"

The xorg.0.log file has these three entries repeated nine (9) times each, obviously at different times.

There are other quite a few parts of the log file that are repeated and seeing that there is a 20s wait from the PW 'enter' to a usable desktop, I am starting to wonder if there isn't something wrong with the xorg.conf file I put together.

So the first question would be if it is 'normal' (as in 'usual') for the log file to have repeated entries for the exact same thing.

It starts at [ 58.839] and ends at [100.838].

Thanks in advance,

A.

I've attached a video.conf from /etc/X11/xorg.conf.d/. You should write one to suit yourself. It needs the sections I have. I never ran it with more than 2 screens. This catered for

1. A 1600x900 laptop screen.
2. Some unknown Monitor hung out of the vga port. I think I used 1440x800.
3. A hdmi monitor @1920x1080
4. A projector hung out of the hdmi port @1280x720

All the fussing about virtual and position specs was because I had a left/right split as everything would start on the left screen but I could drag it right. So the projector never got my desktop, but I could stream stuff and project it on the right.

X simply ignores stuff it doesn't find. I never tried more than 2 screens as there's only hd4000 graphics here.

Hello:
Thanks ...
But I cannot find it.
That's exactly what I did with my xorg.conf.
Lots of searching and countless logouts/logins/boots eventually got me the working xorg.conf I wanted, with 'apparently' no problems: A desktop spanning three 1280*1024 monitors (3840*1024).

I cannot trust the automatic xorg configuration as it never got things right but it does/can give you a reasonable starting point.

My xorg.0.log has no errors (EE), a coulple of the advisories (WW) that xorg calls 'warnings' and to which many before me have tried to find answers to (and decided that they're harmless) so that's all right but then there's the issue I write about in my OP.

ie: the (it seems) slow start of the xserver (up to 20+ seconds from PW enter to desktop) and the lines that are repeated up to nine times each in the xorg.0.log file, which 'may' have a cause and be related.

Or maybe not.

Thanks for your input.

A.

OK - messed up obviously. Try this
https://pastebin.com/WMrxqk05

Hello:
OK.
Seems much like mine.

Could you please post me a copy of a clean boot xorg.0.log file for this setup?
Thanks in advance.

Cheers,

A.

You asked for it.

https://pastebin.com/Dea9inqt

I only have one monitor fitted atm, the laptop screen.The difficult bit I found was the ServerLayout section, getting the right bits associated, and the Device sections. Positioning was fairly easy, and the virtual setting depended on the resolution. X copes with that fairly well these days, whereas you had to hold it's hand in times past. The Modelines proved Counter productive. X does better if you let it figure that stuff out. I was merging all different sizes, and the PreferredMode setting was a Godsend. That dates from 2015, and would drive that 1280x720 projector from hdmi or vga.

Hello:
Thanks. =-)

I'll have a more detailed look at it this week-end.
But from a quick look just now I can see that many entries repeat themselves.

Thanks for your input.

Cheers,

A.

There's one card but three monitors and one kind of 'guess what's there' situation. I guess it's overspecified, but I stopped fiddling when it started working.