Xorg -configure gives an error

rabcor · Apprentice Joined: 05 Apr 2012 Posts: 200

Number of created screens does not match number of detected devices. Configuration failed.

My logfile goes:

Load Module: nouveau....

Gusar · Posted: Tue Sep 25, 2012 4:01 pm Post subject:

For the n-th time... X -configure is outdated and shouldn't be used. It's not needed. If there is a problem, X -configure will not solve it.

You don't need any configuration for nouveau. There's just one thing when it comes to Kepler cards: you need to get some microcode by running the blob and then doing some gymnastics, but I don't know if the microcode is needed just for 3d accel or for getting nouveau running at all.

Question though: Why do you want to use nouveau in the first place? You have a high-end graphic card, makes no sense to buy such a card and then artificially limit yourself by using nouveau.

chithanh · Posted: Tue Sep 25, 2012 4:52 pm Post subject:

X -configure is outdated, but mentioned in a lot of documentation floating on the Internet still. So trying to use it is not something you can blame users for.

Verify that "lspci -k" lists nouveau as kernel driver in use and /proc/fb contains nouveaufb. Then you can start your X server without any xorg.conf at all. Read http://www.gentoo.org/doc/en/xorg-config.xml if you need to configure keyboard or monitor layout through /etc/X11/xorg.conf.d/ snippets.

rabcor · Apprentice Joined: 05 Apr 2012 Posts: 200

Chiitoo · Posted: Wed Sep 26, 2012 11:44 am Post subject:

Teegrins, rabcor!

It has been only about 2 years since I was in the same situation, being more or less confused about the nvidia-xorg-nouveau triangle, so do not worry about it; it's quite normal! We are here to give you directions when in need! I do wish the documentation would be brought to the now soon'ish, as the we don't need no configuration (xorg.conf) move has been up and about for a while now.

Nouveau is of course an option, but the proprietary drivers (nvidia-drivers) usually (if not always) are able to perform better with games and such. If you want a nice and big resolution frame-buffer however, nouveau will likely be able to provide you with a higher resolution.

Only you can decide what you want though, and often it's best to simply try things out before making the decision.

In any case, if you were to go with nvidia instead of nouveau, there are indeed things that are done differently, one of the most important aspect being differences in Kernel configuration.

Here is one guide for that:

Gentoo Linux nVidia Guide

For nvidia-drivers, I believe a very minimal xorg.conf is still needed, though the settings suggested in the above guide are still a bit much.
Something like this is often suggested:

rabcor · Apprentice Joined: 05 Apr 2012 Posts: 200

Somethings up with the servers for sure, Thanks a lot, you were really helpful

altho i did manage to mess up somehow and end up somewhere close to (but not quite) here: https://forums.gentoo.org/viewtopic-t-934508-start-0.html
But making more mistakes is the fastest way to learning new things thankfully. I just live in the hope that eventually i'll know what i'm doing, instead of just having a rough idea about it.

_________________
This picture was my biggest reason for ever trying Gentoo <3