HP 15-dy1xxx笔记本连接充电器时严重降速的问题求助

各位好，我遇到一个非常诡异的问题：我的HP 15-dy1xxx笔记本一接上充电器就会严重降速，哪怕系统完全没有负载也是如此，但拔掉充电器后运行就完全正常。

先说说我的设备基本情况：

• 型号：HP-15-dy1xxx
• 配置：NVMe硬盘、16GB内存（仅使用5GB）
• 系统：Ubuntu 22.04
• 温度：全程处于正常范围，没有过热情况

我觉得这应该不是软件（驱动）问题，因为接上充电器时，笔记本的启动过程会变得异常缓慢，甚至在BIOS设置界面里运行都非常卡顿。

为了直观展示性能差异，我运行了一个脚本：循环执行100,000次迭代，记录每次的耗时。以下是测试结果：

04:19:23 PM IST,      Time Taken: 4822 Milliseconds,            Iteration: 1
04:19:28 PM IST,      Time Taken: 5023 Milliseconds,            Iteration: 2
04:19:33 PM IST,      Time Taken: 4847 Milliseconds,            Iteration: 3
04:19:38 PM IST,      Time Taken: 4880 Milliseconds,            Iteration: 4
04:19:42 PM IST,      Time Taken: 4002 Milliseconds,            Iteration: 5 #Charger Disconnected. You can see the performance is recovering.
04:19:44 PM IST,      Time Taken: 1923 Milliseconds,            Iteration: 6
04:19:46 PM IST,      Time Taken: 1955 Milliseconds,            Iteration: 7
04:19:48 PM IST,      Time Taken: 1976 Milliseconds,            Iteration: 8
04:19:50 PM IST,      Time Taken: 1934 Milliseconds,            Iteration: 9
04:19:51 PM IST,      Time Taken: 1925 Milliseconds,            Iteration: 10
04:19:53 PM IST,      Time Taken: 2005 Milliseconds,            Iteration: 11
04:19:55 PM IST,      Time Taken: 1930 Milliseconds,            Iteration: 12
04:19:57 PM IST,      Time Taken: 1988 Milliseconds,            Iteration: 13
04:19:59 PM IST,      Time Taken: 1918 Milliseconds,            Iteration: 14
04:20:01 PM IST,      Time Taken: 1929 Milliseconds,            Iteration: 15
04:20:03 PM IST,      Time Taken: 1721 Milliseconds,            Iteration: 16
04:20:04 PM IST,      Time Taken: 1174 Milliseconds,            Iteration: 17
04:20:05 PM IST,      Time Taken: 1145 Milliseconds,            Iteration: 18
04:20:07 PM IST,      Time Taken: 1229 Milliseconds,            Iteration: 19
04:20:08 PM IST,      Time Taken: 932 Milliseconds,            Iteration: 20
04:20:08 PM IST,      Time Taken: 859 Milliseconds,            Iteration: 21
04:20:09 PM IST,      Time Taken: 851 Milliseconds,            Iteration: 22
04:20:10 PM IST,      Time Taken: 841 Milliseconds,            Iteration: 23
04:20:11 PM IST,      Time Taken: 844 Milliseconds,            Iteration: 24
04:20:12 PM IST,      Time Taken: 746 Milliseconds,            Iteration: 25
04:20:12 PM IST,      Time Taken: 317 Milliseconds,            Iteration: 26  #After approx 40 seconds now it is performing fine. Look at the end how it throttles when i will reconnect the charger.
04:20:12 PM IST,      Time Taken: 320 Milliseconds,            Iteration: 27
04:20:13 PM IST,      Time Taken: 335 Milliseconds,            Iteration: 28
04:20:13 PM IST,      Time Taken: 327 Milliseconds,            Iteration: 29
04:20:13 PM IST,      Time Taken: 336 Milliseconds,            Iteration: 30
04:20:14 PM IST,      Time Taken: 329 Milliseconds,            Iteration: 31
04:20:14 PM IST,      Time Taken: 328 Milliseconds,            Iteration: 32
04:20:14 PM IST,      Time Taken: 327 Milliseconds,            Iteration: 33
04:20:15 PM IST,      Time Taken: 325 Milliseconds,            Iteration: 34
04:20:15 PM IST,      Time Taken: 320 Milliseconds,            Iteration: 35
04:20:15 PM IST,      Time Taken: 327 Milliseconds,            Iteration: 36
04:20:16 PM IST,      Time Taken: 336 Milliseconds,            Iteration: 37
04:20:16 PM IST,      Time Taken: 318 Milliseconds,            Iteration: 38
04:20:16 PM IST,      Time Taken: 330 Milliseconds,            Iteration: 39
04:20:17 PM IST,      Time Taken: 330 Milliseconds,            Iteration: 40
04:20:17 PM IST,      Time Taken: 329 Milliseconds,            Iteration: 41
04:20:17 PM IST,      Time Taken: 327 Milliseconds,            Iteration: 42
04:20:18 PM IST,      Time Taken: 331 Milliseconds,            Iteration: 43
04:20:18 PM IST,      Time Taken: 323 Milliseconds,            Iteration: 44
04:20:18 PM IST,      Time Taken: 325 Milliseconds,            Iteration: 45
04:20:19 PM IST,      Time Taken: 326 Milliseconds,            Iteration: 46
04:20:19 PM IST,      Time Taken: 313 Milliseconds,            Iteration: 47
04:20:19 PM IST,      Time Taken: 321 Milliseconds,            Iteration: 48
04:20:20 PM IST,      Time Taken: 346 Milliseconds,            Iteration: 49
04:20:20 PM IST,      Time Taken: 314 Milliseconds,            Iteration: 50
04:20:20 PM IST,      Time Taken: 375 Milliseconds,            Iteration: 51
04:20:21 PM IST,      Time Taken: 333 Milliseconds,            Iteration: 52
04:20:21 PM IST,      Time Taken: 346 Milliseconds,            Iteration: 53
04:20:21 PM IST,      Time Taken: 316 Milliseconds,            Iteration: 54
04:20:22 PM IST,      Time Taken: 323 Milliseconds,            Iteration: 55
04:20:22 PM IST,      Time Taken: 312 Milliseconds,            Iteration: 56
04:20:22 PM IST,      Time Taken: 324 Milliseconds,            Iteration: 57
04:20:23 PM IST,      Time Taken: 330 Milliseconds,            Iteration: 58
04:20:23 PM IST,      Time Taken: 321 Milliseconds,            Iteration: 59
04:20:23 PM IST,      Time Taken: 326 Milliseconds,            Iteration: 60
04:20:24 PM IST,      Time Taken: 329 Milliseconds,            Iteration: 61
04:20:24 PM IST,      Time Taken: 323 Milliseconds,            Iteration: 62
04:20:24 PM IST,      Time Taken: 333 Milliseconds,            Iteration: 63
04:20:25 PM IST,      Time Taken: 333 Milliseconds,            Iteration: 64
04:20:25 PM IST,      Time Taken: 325 Milliseconds,            Iteration: 65
04:20:25 PM IST,      Time Taken: 331 Milliseconds,            Iteration: 66
04:20:26 PM IST,      Time Taken: 331 Milliseconds,            Iteration: 67
04:20:26 PM IST,      Time Taken: 329 Milliseconds,            Iteration: 68
04:20:26 PM IST,      Time Taken: 328 Milliseconds,            Iteration: 69
04:20:27 PM IST,      Time Taken: 330 Milliseconds,            Iteration: 70
04:20:27 PM IST,      Time Taken: 317 Milliseconds,            Iteration: 71
04:20:27 PM IST,      Time Taken: 327 Milliseconds,            Iteration: 72
04:20:28 PM IST,      Time Taken: 323 Milliseconds,            Iteration: 73
04:20:28 PM IST,      Time Taken: 321 Milliseconds,            Iteration: 74
04:20:28 PM IST,      Time Taken: 325 Milliseconds,            Iteration: 75
04:20:29 PM IST,      Time Taken: 325 Milliseconds,            Iteration: 76
04:20:29 PM IST,      Time Taken: 319 Milliseconds,            Iteration: 77
04:20:29 PM IST,      Time Taken: 316 Milliseconds,            Iteration: 78
04:20:33 PM IST,      Time Taken: 3419 Milliseconds,            Iteration: 79 #I again plugged in the charger.
04:20:38 PM IST,      Time Taken: 4856 Milliseconds,            Iteration: 80
04:20:42 PM IST,      Time Taken: 4813 Milliseconds,            Iteration: 81
04:20:47 PM IST,      Time Taken: 4875 Milliseconds,            Iteration: 82

从测试结果能看到：

• 接上充电器时，每次迭代耗时约4800-5000毫秒
• 拔掉充电器后，大约需要30-45秒恢复正常性能，最终稳定在300毫秒左右
• 重新接上充电器后，性能立刻又降速到原来的卡顿状态

我已经试过更换不同的充电器，但问题依旧。有没有大佬能给点思路或者解决办法？非常感谢！

备注：内容来源于stack exchange，提问作者Ajaib Singh