Chrome failed to start on CentOS using chromedriver2.9
Are you using headless? If so, you will have to specify the headless display through pyvirtualdisplay.
I had the same error (log) when I was running selenium headless without telling selenium to use visual display. After installing pyvirtualdisplay, the following code works for me:
from selenium import webdriverfrom pyvirtualdisplay import Displaydisplay = Display(visible=0, size=(800, 600))display.start()driver = webdriver.Chrome()driver.get("http://www.google.com")print driver.page_source.encode('utf-8')driver.quit()display.stop()