最近我用 Shutter 截图的时候，发现只要一截图，Shutter 就会崩溃……

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一直以来阻止我购买蓝牙耳机的原因有一个，就是我的 Linux 笔记本不支持蓝牙 APTX，后来虽说什么索尼 LDAC 开源了，但是那群愚蠢的开源开发者们还在就“代码是否正统”在扯皮。

其实在 Linux 下支持蓝牙 APTX 与 LDAC 的协议进展一直有，有逆向工程的，也有整合代码的，但是都没有被 merge 到上游，因为他们还在扯皮。

而且现在 APTX 都已经被逆向工程了，LDAC 源代码都放出了，甚至都被 ALSA merge 了，pulseaudio 还没有动静，这不科学啊。

于是现在终于有国人行动了，我们感谢他。

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是的，Ubuntu 的软件源里又加入了新的内核更新了。

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Firefox 似乎还不支持加速，那么只能用 Chrome 了，至少加速后更省电了？

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Open youro web browser and lead to :

https://launchpad.net/ubuntu/+source/libinput

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It seems you can use libinput to configure your touchpad on Ubuntu.Like two fingers, Three fingers,and Four fingers.

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On Ubuntu Unity 18.04, The default datetime format is quite weird.

If you displayed week, It would show up "三" instead of "星期三".

So you have to change this.

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Open Ubuntu kernel Mainline PPA

http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17.1/

Download deb files and install. "unsigned" means no Secure boot support.

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Indicator-keylock can handle your feature keys status easily.

And there is a new PPA for Ubuntu 18.04.

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This bug is reported in launchpad: Elantech touchpad stops working after suspend.

Everytime you wake up from suspending, You have to "unload&load psmouse module manually".

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