introduction
Now portable devices, interfaces become less and less. So we have no reason not to use a Bluetooth mouse. Tall is not expensive.
Prior to Bluetooth 4.0, Bluetooth devices is especially cost electricity. Bluetooth 4.0 power after death, my mouse on a Microsoft Designer Mouse
Two AAA batteries can be used almost 6-8 months do not need to replace the battery. And the premise is rarely closed. Substantially in a normally open state.
Of course, this side there is a special case, and I am a little red dot emacs user, it may be several hours do not touch the mouse.
[author: classic_tong; date: 20190921]
Foreword
But unfortunately, yes. Mouse still fragile, especially the left. Copper aging, and squeezing can easily cause damage. In particular extrusion. So finally my designer
After three years he left out of order.
Then I buy a new one, found that the delay is obvious. I thought it was the DPI or the like, so he bought one, then go to buy three. We have discovered that there was a delay problems (delays, insensitive, slow response)
Then I realized, probably a software problem.
Before we begin, I need to thank the three mouse, and Jingdong Mall. They are:
1. 
2.
3.
problem
Realizing that it is probably a software problem, only a readily google: "linux bluetooth mouse lag", questions and answers immediately appear.
Faced with the problem of people or many. A list of what useful information can be yourself, I can not see the solution below:
archlinux wiki is already given in the method:
https://wiki.archlinux.org/index.php/Bluetooth_mouse#Troubleshooting
BBS inside also discussed in detail:
https://bbs.archlinux.org/viewtopic.php?pid=1857256#p1857256
linux kernel inside for a discussion on the subject:
Solution
The solution is simple
1. Connect Bluetooth.
This time will generate this file in the var
/var/lib/bluetooth/E4\:70\:B8\:A7\:07\:19/DF\:B6\:2E\:A4\:60\:08/info
2. Modify the file, add the following line
[ConnectionParameters] MinInterval=6 MaxInterval=6 Latency=60 Timeout=300
3. Restart Bluetooth devices on your notebook
After that, my problem is solved.
Explanation about these configurations, see
https://git.kernel.org/pub/scm/bluetooth/bluez.git/tree/doc/settings-storage.txt
Other
Also, why the previous mouse is good, buy a new these will not it?
Presumably, bluez updated version, not the added value of these. As long as in the beginning of the configuration can be a plus, a few years ago may bluez version
Is a plus, right?
In order to rule out differences in hardware. I put the old mouse info file deleted, re-link. Configuration has not been added. So, the hardware is undifferentiated.
Finally, I chose red 3600, good-looking thing?
[author: classic_tong; date: 20190921]