关于mac下面用Parallels装ubuntu时分辨率问题[已解决]

最近由于要深入下Android系统，在Parallels虚拟机上安装了ubuntu系统，刚开始安装成功的时候，分辨率只有800*600.本来想着去设置里面改动呢，可是设置里面只有800*600一个选项。

最后在下面方法中解决了：
Solutions for low screen resolution in Ubuntu 14.04/14.10 and VirtualBox
This article was originally posted on the forum.

On my test installations of Ubuntu 14.04 in VirtualBox, I had to figure out how to deal with a situation where the highest screen resolution I could get was 640 x 480. And it was not just with Ubuntu 14.04, but also with Kubuntu 14.04.

UPDATE: This also applies to Ubuntu 14.10.

This image shows the output of the xrandx command.

Here’s what it looks like from the Display module of System Settings. That’s not good. I found that there are two solutions to the problem.

1. Use Xdiagnose From the Dash, search for and launch Xdiagnose, then enable all the options under the Debug section. Click the Apply button, then close the window and restart the system. You’ll have to restart. Logging out, then in won’t do.

2. Additional Drivers Also from the Dash, search for and start Software Updates. Click on the Additional Drivers tab, then click on the Using x86 virtualization solution…. Apply the changes, then restart the machine.

With either solution, the system should reboot in 1024 x 768 screen resolution. And you should be able to expand the window simply by dragging it. If you run the xrandx command again, the output should be just like the one shown in this image:

具体来说就是需要装一个Xdiagnose的东西，然后在terminal中输入：

sudo xdiagnose

按照上面方法设置，然后点击apply，再点击close。然后重启ubuntu系统就可以了。

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