Hello I am having a hard time to find .conf file for Nvidia Drivers. System is working fine with accelleration but I need to make some adjustments manually but I cant find it anywhere.

Normally it is in:




But I cant find it anywhere.

My hardware:

Lenovo Y510P with 2 X nVidia 755M SLI

Just to mention if it helps, this laptop is Optimus enabled but switching on Ubuntu works only when I have second graphic card removed from Ultrabay. So normally when I boot with two GPUs it detects just those 2 nvdia graphics card and integrated Intel Graphic is disabled by BIOS.

I dont care about SLI as I know that SLI dont work very well under Linux with Nvidia propietary drivers(jet), and especially dont work on mobile GPUs.

Generating new config file using


will render my setup unbootable and since my setup is working fine there is no point generating new config file but as I said I cant find current config file anywhere.


I tried nvidia-xconfig again and it seemed to be that previous file have been messed up because it works now even with newly generated xorg.conf.

Here is Xorg.0.log


/etc/X11/xorg.conf is not present when X server uses autoconfiguration but it should be possible to create a new one. It may be that nvidia-xconfig selects different GPU than the autoconfiguration. You can check which GPU is the X server using in /var/log/Xorg.0.log and compare it with /etc/X11/xorg.conf generated by nvidia-xconfig.

Also, if your adjustments are regarding the GPU, you can set a lot of that in nvidia-settings without the need for xorg.conf.

  • I have uploaded Xorg.0.log. I cant find out which GPU is XServer using. I understand that I can use nvidia-settings to make some adjustments but what I need is to adjust Refresh rate. For example on windows I can manually set custom refresh rate in nvidia panel but in Linux this option is not available. I understand that I wont notice any difference after 60Hz but I need to adjust it manually for testing purposes. – apedlabs Feb 14 '15 at 20:52
  • It uses PCI:1:0:0. The other card is PCI:7:0:0. – StenSoft Feb 14 '15 at 21:05
  • Right so is there any way to change refresh rate manually like it used to be in xorg.conf? If it is autoconfigured, where is configuration file stored? – apedlabs Feb 14 '15 at 21:11
  • It still autoconfigurates everything that is not set in xorg.conf. Just by default, there is no fixed configuration and therefore no xorg.conf. – StenSoft Feb 14 '15 at 21:18
  • OK, I understand now. I thought that it autoconfigure itself once and stores config somewhere but now I understand what you mean. I guess that I wont be able to change refresh rate. If you have any suggestions I will appreciate that. Otherwise thanks for your help. – apedlabs Feb 14 '15 at 21:25

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