Jtdcftul

I have problems when compile SFML-project(don't see any graphic):

libGL error: No matching fbConfigs or visuals found

libGL error: failed to load driver: swrast

This error can be solved by simple reinstalling nvidia-drivers through this tutorial: https://askubuntu.com/a/451248/341889

..but when i get new updates - this error is returning ;( What should I do? It's not the solution - not use system's update...

P.S. and yes, i saved all changes after installing nvidia-drivers

The swrast thing is the software renderer. That means it's not finding the hardware driver for your graphics card. There are a bunch of libGL libraries installed and a bunch of of symbolic links to those libraries. To see these run this from the shell:

find /usr -iname "*libGL.so*" -exec ls -l -- {} + 

Now the probable cause of your problem is that installing graphics drivers sometimes break these symbolic links. (Specifically /usr/local/lib/libGL.so.1.2.0 is likely to be either the wrong lib or a sym link to the wrong link).

To work out what library the OpenGL programs are trying to run you can turn on a bit of verbosity and run a simple OpenGL program. You can verify this using the standard OpenGL test program:

LIBGL_DEBUG=verbose glxgears

Hopefully that will fail in the same way as SFML. With LIBGL_DEBUG it should tell you what OpenGL library it's trying to load. Furthermore the lib it will be trying to load will almost certainly be /usr/local/lib/libGL.so.1.2.0 (Edit: This was the standard OpenGL library on my machine at the time I answered this. It may well be some other version on your machine now).

So the solution (in this case) is to make sure that /usr/local/lib/libGL.so.1.2.0 is a symbolic link pointing at the right OpenGL library. In my case I have the Nvidia 3.40 driver so I ran:

ln -s /usr/lib/nvidia-340/libGL.so.1 /usr/local/lib/libGL.so.1.2.0

But you'll want to point it at the OpenGL lib that is appropriate for you (listed in the first find command).

In summary: installing (proprietary) graphics drivers can break the symbolic links used for OpenGL libs. To solve this problem manually fix the symbolic links (fix /usr/local/lib/libGL.so.1.2.0 first).

I was having problems getting the correct symlink to point at the nVidia driver and I found another way that works for me.

It is outlined here.

And it lists on how to install the nVidia driver via PPA which is avaliable for 349.16, the latest version.

First uninstall any nVidia drivers currently installed by opening a terminal window (Ctrl + ALT + T) and typing

sudo apt-get remove nvidia*

Reboot your system

Then open another terminal and type the following

sudo add-apt-repository ppa:xorg-edgers/ppa

sudo apt-get update

sudo apt-get install nvidia-349 nvidia-settings

sudo add-apt-repository -r ppa:xorg-edgers/ppa

Then reboot again

I tried it after getting lost with the symlinks and steam worked fine immediately after the installing the driver and again it was still working after I had 400+ megs of system updates.

I had the same issue on Ubuntu 16.10 with the nvidia-340 drivers and none of the solutions here worked for me.

Turns out the 32-bit libraries were not on the library path.

This one liner worked for me:

export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/lib32/nvidia-340"

To provide an alternative to Adrian's answer: if you prefer to use proprietary drivers sourced directly from NVIDIA instead of those found in a PPA, installing (or in my case, re-installing) the latest proprietary driver can help eliminate the swrast error.

If you don't have the NVIDIA driver yet, download the driver from NVIDIA's website. Next, switch to tty (ctrl+alt+F1) and turn off your login manager:

If using lightdm, $ sudo service lightdm stop

If using gdm, $ sudo service gdm stop

Navigate to the install script and run it, and follow the prompts. Don't worry if the pre-install script fails. I always accept registering DKMS and the 32-bit compatibility libraries. After the driver is installed, restart your machine:

$ sudo reboot

If you already have an install script from an older NVIDIA driver, simply run the NVIDIA driver install script as oulined above, but with the "--update" option:

$ sudo ./NVIDIA-Linux-x86_64-***.**.run --update

This will get you the most up-to-date version of the driver.

Doing this fixed my libGL error: failed to load driver: swrast error.

I have to admit, I'm not sure why this works for me, but it did. In this particularly case "fixing" the ld.so.conf.d entries by adding a new entry like this works:

sudo ln -s /usr/lib/nvidia-381/ld.so.conf /etc/ld.so.conf.d/nvidia64.conf

sudo ldconfig 

This makes sense, until you run the following find:

$ find -L /etc/ld.so.conf.d -type f | xargs grep -i nvidia

/etc/ld.so.conf.d/x86_64-linux-gnu_GL.conf:/usr/lib/nvidia-381

/etc/ld.so.conf.d/x86_64-linux-gnu_GL.conf:/usr/lib32/nvidia-381

/etc/ld.so.conf.d/x86_64-linux-gnu_EGL.conf:/usr/lib/nvidia-381

/etc/ld.so.conf.d/x86_64-linux-gnu_EGL.conf:/usr/lib32/nvidia-381

/etc/ld.so.conf.d/nvidia64.conf:/usr/lib/nvidia-381

/etc/ld.so.conf.d/nvidia64.conf:/usr/lib32/nvidia-381

Why having the same entries in triplicate works, but not in duplicate, I have no idea!