The drink is made either with kefir grains or a powdered kefir starter â the grains aren't an actual grain like wheat, but are made of bacteria and yeast. Generally of a thinner consistency than yogurt, kefir is usually sold as a drink, either plain or flavoured. Here are a dozen things you should know about kefir.
As the error states, you are still running an X server. This error occurs when you try to install the Nvidia .run files while logged in. Make sure you are logged out.1  Hit CTRL+ALT+F1 and login using your credentials. 2  kill your current X server session by typing sudo service lightdm stop or sudo stop lightdm. 3  Enter runlevel 3 by typing sudo init 3 and install your *.run file.4  You might be required to reboot when the installation finishes. had the same problem installing the driver for an old GeForce 9800 GT in Ubuntu 14.04-2. It was the NVIDIA-Linux-x86_64-340.76.run. I switched to the the tty1 using Ctrl+Alt+F1 and also stopped the service lightdm and when running the executable got the same error.
The best procedure I have found right now for the Windows 8.1 preview is to remove all NVIDIA drivers from the control panel. Once done restart the PC and you should be in VGA mode. Go to Windows update in the control panel and check for updates. At this time the 325.XX series is the highest one available until NVIDIA provides Microsoft with a newer driver.