- 笔记本电脑：华硕 ROG Zephyrus G14
- 操作系统：Ubuntu 21.04
- 内核：5.12.19
- Nvidia 驱动程序版本：460.91.03
syslog重启时：
Dec 7 17:12:01 cyber kernel: [30576.847272] usb usb4-port2: Cannot enable. Maybe the USB cable is bad?
Dec 7 17:12:01 cyber kernel: [30576.847289] usb usb4-port2: config error
Dec 7 17:12:05 cyber kernel: [30580.956917] usb usb4-port2: Cannot enable. Maybe the USB cable is bad?
Dec 7 17:12:05 cyber kernel: [30580.956978] usb usb4-port2: config error
Dec 7 17:12:09 cyber kernel: [30585.068878] usb usb4-port2: Cannot enable. Maybe the USB cable is bad?
Dec 7 17:12:09 cyber kernel: [30585.068892] usb usb4-port2: config error
Dec 7 17:12:13 cyber kernel: [30589.156968] usb usb4-port2: Cannot enable. Maybe the USB cable is bad?
Dec 7 17:12:13 cyber kernel: [30589.157037] usb usb4-port2: config error
Dec 7 17:12:17 cyber kernel: [30593.264895] usb usb4-port2: Cannot enable. Maybe the USB cable is bad?
Dec 7 17:12:17 cyber kernel: [30593.264916] usb usb4-port2: config error
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
Dec 7 17:13:21 cyber kernel: [ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-5.12.19-051219-gener
Dec 7 17:13:21 cyber kernel: [ 0.000000] KERNEL supported cpus:
Dec 7 17:13:21 cyber kernel: [ 0.000000] Intel GenuineIntel
Dec 7 17:13:21 cyber kernel: [ 0.000000] AMD AuthenticAMD
我很好奇这些符号在syslog( ^@^@^@^@^...) 中是什么意思。我在省电模式下运行 Ubuntu（不使用 Nvidia GPU）。这可能是 AMD 显卡的问题吗？
更新。使用第二台更强大的 GPU（Nvidia GeForce RTX 3060）时，同一台笔记本电脑也发生了同样的事情