selenium-webdriver - 未知错误 : an X display is required for keycode conversions

Question

我正在尝试在 Centos 6 headless linux 上使用 appium 运行移动网络测试，但我不断收到此错误:

"info: [CHROMEDRIVER STDERR] No protocol specified

info: Responding to client with error: {"status":13,"value":{"message":"An unknown server-side error occurred while processing the command.","origValue":"**unknown error: an X display is required for keycode conversions, consider using Xvfb\n**  (Session info: chrome=webview)\n  (Driver info:chromedriver=2.9.248316,platform=Linux 2.6.32-042stab088.4x86_64)"},"sessionId":"8563fbe5972f3ba87673c7a082d49d22"}
POST /wd/hub/session/8563fbe5972f3ba87673c7a082d49d22/element/0.06753459526225924-1/value 500 1927ms - 395b

debug: Appium request initiated at /wd/hub/session/8563fbe5972f3ba87673c7a082d49d22

debug: Request received with params: {}

info: Shutting down appium session..."

它打开 chrome 浏览器并导航到给定的 url。之后，它尝试将 sendKeys 发送到用户名字段，然后失败。

Answer 1

请在此处找到可能的解决方案: http://www.installationpage.com/selenium/how-to-run-selenium-headless-firefox-in-ubuntu/

它适用于 Ubuntu，也许类似的解决方案适用于 CentOS。由于某些原因，我不得不使用更大的帧缓冲区启动 Xvfb

sudo Xvfb :10 -ac -screen 0 4000x2000x8