Original link: https://cyrusyip.org/zh-cn/post/2022/08/31/fix-strange-pc-problem/
Friendly reminder: you can guess the reason of the problem while reading this article, it may be more interesting.
Tonight, when the computer uses the Fcitx5 input method in Chrome, the word selection is always wrong (strange phenomenon 1). After restarting Chrome, it is fine again. I went to bed after the computer locked the screen. When I went to the toilet in the middle of the night, I found that the monitor and laptop screen were both on and did not turn off automatically (strange phenomenon 2). The next day, open the settings of KDE Plasma to see if there is an option of “connect the monitor without turning off the screen”. Open “Energy Saving”, there seems to be no related options in it. At this time, the computer is a little out of control, and I randomly click on the things inside and click on the tabs inside (strange phenomenon 3). As the saying goes, rebooting solves 90% of computer problems. So I upgraded Arch Linux and rebooted, but it didn’t work.
I haven’t seen such a strange thing after using a computer for so many years, so it shouldn’t be hacked. Thinking about it, it’s unlikely. I use Linux. If I hack my computer and do bad things, I have to quietly use the command line. Using remote desktop is really thankless. Well, open Chrome and search, but I don’t know what to search for. After opening Chrome, no matter which tab I click, Chrome selects the tab to the right of it, then the right, until it reaches the far right (strange phenomenon 4). The Brave browser, which is also a Chromium kernel, has this problem, but Firefox is fine.
The input devices of the computer are nothing more than a mouse and a keyboard, so check them one by one. First open screenkey to detect keyboard input, then click the Chrome tab, the problem remains the same, but there is no keyboard input, indicating that the keyboard is OK. Next, open the mouse detection software, but I did not install it. Forget it, just turn off the wireless mouse and click the Chrome tab with the laptop trackpad, and the problem remains the same. I suddenly thought that I had written a webpage that detects the mouse , and when I opened it, I found that the input device kept triggering backward scrolling. Finally identified the problem, searched “linux mouse keep scroll” on Google and found related questions: 10.10 – Mouse wheel jumpy on scrolling – Ask Ubuntu . The questioner also clicks the tab and jumps to the far right.
But I open many browser tabs, and if i just move my mouse of one of the tabs, the the right-most tab gets selected.
The questioner himself answered that the cause of the problem was the low-battery wireless keyboard interfering with the wireless mouse.
Unbelievable, but the problem was that my wireless keyboard and my wireless mouse’s receivers were both on adjacent usb ports. when i moved my mouse’s reciever to a further away port, I found that my mouse was not being weird any more, but my keyboard was acting funny. Turns out my keyboard’s battery was running low and it was interfering with my mouse .
The only wireless input device I use on my computer is the mouse, so there should be no interference. Unplug the receiver plugged into the USB splitter and plug it back in and the problem goes away. I still think it’s very strange, why did the problem still occur after plugging in the receiver and turning off the mouse? If the mouse is closed, it should not send commands to the receiver.
This article is reprinted from: https://cyrusyip.org/zh-cn/post/2022/08/31/fix-strange-pc-problem/
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