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Thinkpad R61i 电流声

Thinkpad也不是完美的。最近发现我的R61i有一个小毛病。当使用电池供电，且不接usb鼠标时，机器左上角会发出滋滋的电流声。声音不大，但是足以让人注意到。时间长了还是挺烦人的。严重影响体验。在网上搜索一下，发现这个还不是个案。很多Thinkpad的用户，R的，T的，都有这个问题。解决的方法是，在bios设置里，选config -> power， 关闭cup和pci的power manage就可以了。但是我觉得把笔记本对cpu的电源管理关闭了好像不太好，所以没有改动。反正插上鼠标就不响了啊。
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闲话

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I want to learn Emacs

I'm using crimson editor, a good text editor from Korea. It has worked very well for me till now, but it has not been updated since 2004 and recently I found some features that crimson editor does not have,such as code folding, really useful. So I want to switch to a powerful, up-to-date, extendable and cross-platform editor. Between vi and Emacs, I chose the later one. Emacs is not easy to learn, so I just want to learn some basic features firstly. 1. Switch between buffers, buffer and minibuffer, and modes. One does not need to change into a special mode to input the content in Emacs (This is one reason why I did not choose vi), but Emacs does have a minibuffer to take some complected commands from the user. And in Emacs one can have many buffers and each buffer has a mode (not the same "mode" in vi). So have to learn what they are and how to switch between them. 2. Basic editing, such as creat new, open, save, and close file, copy and paste, search and replace ... 3. F...
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