我一直在尝试在 Ubuntu 14.10 上安装 oracle 12 c，但遇到了下面提到的错误。请有人检查一下并建议我如何解决这个错误？
Checking Temp space: must be greater than 500 MB. Actual 429214 MB Passed
Checking swap space: must be greater than 150 MB. Actual 4041 MB Passed
Checking monitor: must be configured to display at least 256 colors
>>> Could not execute auto check for display colors using command /usr/bin/xdpyinfo. Check if the DISPLAY variable is set. Failed <<<<
Some requirement checks failed. You must fulfill these requirements before
continuing with the installation,
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