如何解决Ubuntu 13.04系统托盘无法显示QQ的问题
<p style='margin: 0px; padding: 5px 0px; outline: none; font-size: 14px; line-height: 30px; font-family: tahoma, arial, "Microsoft YaHei";'>对于Ubuntu Unity 下找回系统托盘，只需要将程序纳入白名单中即可。</p>
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但是在Ubuntu 13.04 中，原本的方法行不通，因为配置文件中没有</p>
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com.canonical.Unity.Panel 选项。</p>
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这个时候，需要把这个选项重新激活，使用下面的PPA即可：</p>
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sudo add-apt-repository ppa:timekiller/unity-systrayfix<br>
sudo apt-get update<br>
sudo apt-get upgrade<br>
完成之后，注销或者重启。</p>
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然后就可以按照以前的方法设置白名单了（下面是设置全部）：</p>
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gsettings set com.canonical.Unity.Panel systray-whitelist "['all']"</p>
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<strong>Ubuntu Unity 下无法显示QQ、Pidgin 等系统托盘的图标的解决方法</strong></p>
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这是由于在Unity中，Ubuntu对系统托盘采取了白名单机制，只有在白名单内的程序才能在系统托盘处显示图标。</p>
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如果你想所有的程序都可以显示，则在终端运行下面命令：</p>
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gsettings set com.canonical.Unity.Panel systray-whitelist "['all']"<br>
若你想自定义程序的话，运行下面的命令（YOUR_APPLICATION是程序名）：</p>
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gsettings set com.canonical.Unity.Panel systray-whitelist “['JavaEmbeddedFrame', 'Mumble', 'Wine', 'YOUR_APPLICATION']“<br>
还原到系统默认状态：</p>
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gsettings set com.canonical.Unity.Panel systray-whitelist "['JavaEmbeddedFrame', 'Mumble', 'Wine', 'Skype', 'hp-systray']"</p>
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Ubuntu 13.04 下默认没有com.canonical.Unity.Panel 选项，需要安装：</p>
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sudo add-apt-repository ppa:timekiller/unity-systrayfix<br>
sudo apt-get update<br>
sudo apt-get upgrade</p>
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成功后再执行上诉方法即可。</p>
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