我有一台电脑，一段时间后会一直死机。它启动并运行似乎没有问题，但过了一段时间，尤其是在负载较大的情况下，它最终完全死机。屏幕上仍然有静止图像，耳机里发出有故障的声音，但我无法移动指针或与任何东西交互（甚至无法使用键盘）。
其规格如下：
- 处理器：AMD FX-8350
- 主板：技嘉990FXA-UD3
- RAM：两个 8GB 和一个 1GB RAM 模块（BIOS 内存测试未显示错误）
- 显卡：Nvidia GeForce GTX 750 Ti
它有一个 Xubuntu 23.10，带有 Linux 6.5.0-10-generic。这款主板的 XHCI 和 USB3 总是出现问题，因此 journalctl 中会出现一些关于此问题的消息，但除此之外，我没有看到任何关于崩溃的有用日志。此外，它已插入 UPS，所以我猜这不可能是电源输入问题……
这是我上次硬重启之前 journalctl 的最后几行，当时系统在今天下午 13:49 左右冻结。
nov. 04 13:43:27 mmarx xdg-desktop-por[2570]: No skeleton to export
nov. 04 13:43:27 mmarx xdg-desktop-por[2570]: Choosing gtk.portal for org.freedesktop.impl.portal.FileChooser via temporary hard-coded fallback
nov. 04 13:43:27 mmarx xdg-desktop-por[2570]: Choosing gtk.portal for org.freedesktop.impl.portal.AppChooser via temporary hard-coded fallback
nov. 04 13:43:27 mmarx xdg-desktop-por[2570]: Choosing gtk.portal for org.freedesktop.impl.portal.Print via temporary hard-coded fallback
nov. 04 13:43:27 mmarx xdg-desktop-por[2570]: Choosing gtk.portal for org.freedesktop.impl.portal.Notification via temporary hard-coded fallback
nov. 04 13:43:27 mmarx xdg-desktop-por[2570]: Choosing gtk.portal for org.freedesktop.impl.portal.Inhibit via temporary hard-coded fallback
nov. 04 13:43:27 mmarx xdg-desktop-por[2570]: Choosing gtk.portal for org.freedesktop.impl.portal.Access via temporary hard-coded fallback
nov. 04 13:43:27 mmarx xdg-desktop-por[2570]: Choosing gtk.portal for org.freedesktop.impl.portal.Account via temporary hard-coded fallback
nov. 04 13:43:27 mmarx xdg-desktop-por[2570]: Choosing gtk.portal for org.freedesktop.impl.portal.Email via temporary hard-coded fallback
nov. 04 13:43:27 mmarx xdg-desktop-por[2570]: Choosing gtk.portal for org.freedesktop.impl.portal.DynamicLauncher via temporary hard-coded fallback
nov. 04 13:43:27 mmarx dbus-daemon[1125]: [session uid=1000 pid=1125] Successfully activated service 'org.freedesktop.portal.Desktop'
nov. 04 13:43:27 mmarx systemd[1101]: Started xdg-desktop-portal.service - Portal service.
nov. 04 13:43:28 mmarx rtkit-daemon[1139]: Successfully made thread 2666 of process 2564 owned by '1000' high priority at nice level -10.
nov. 04 13:43:28 mmarx rtkit-daemon[1139]: Supervising 8 threads of 5 processes of 1 users.
nov. 04 13:43:28 mmarx rtkit-daemon[1139]: Successfully made thread 2667 of process 2564 owned by '1000' high priority at nice level -10.
nov. 04 13:43:28 mmarx rtkit-daemon[1139]: Supervising 9 threads of 5 processes of 1 users.
nov. 04 13:43:28 mmarx rtkit-daemon[1139]: Successfully made thread 2687 of process 2564 owned by '1000' high priority at nice level -10.
nov. 04 13:43:28 mmarx rtkit-daemon[1139]: Supervising 10 threads of 5 processes of 1 users.
nov. 04 13:43:40 mmarx rtkit-daemon[1139]: Successfully made thread 2870 of process 2848 owned by '1000' high priority at nice level -15.
nov. 04 13:43:40 mmarx rtkit-daemon[1139]: Supervising 11 threads of 6 processes of 1 users.
nov. 04 13:45:09 mmarx rtkit-daemon[1139]: Successfully made thread 2940 of process 2848 owned by '1000' high priority at nice level -15.
nov. 04 13:45:09 mmarx rtkit-daemon[1139]: Supervising 11 threads of 6 processes of 1 users.
nov. 04 13:52:41 mmarx dbus-daemon[1125]: [session uid=1000 pid=1125] Activating service name='org.xfce.Xfconf' requested by ':1.23' (uid=1000 pid=1427 comm="xfce4-panel" label="unconfined")
nov. 04 13:52:41 mmarx dbus-daemon[1125]: [session uid=1000 pid=1125] Successfully activated service 'org.xfce.Xfconf'
我也看到这一行经常出现但我不知道它是否与此有关：nov. 04 13:02:46 mmarx kernel: [drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000100] Failed to grab modeset ownership
系统完全重新安装后问题仍然存在，所以我觉得这可能是硬件问题，但不太知道如何根据这么少的信息进行诊断（而且我在系统管理员等方面还是个新手）...你对此有什么建议吗？如果需要，我可以发布其他命令的输出。提前谢谢您！