我最近将 Ubuntu 从 20.04 升级到了 22.04。升级后，系统变得很卡 — 它会随机地冻结一秒钟。有时，在冻结期间，我只按过一次的键会重复多次；系统无法用于播放视频，因为视频每隔几秒钟就会随机冻结一次。
我一直在尝试通过终止用户进程来调试该问题，看看性能是否有所改善。我还将系统设置为优先考虑性能，但问题仍然存在。
有趣的是，当我禁用 wifi 时，问题就消失了。禁用 wifi 后，冻结现象立即消失，一切恢复正常，视频播放流畅。
我一直在网上寻找是否有人遇到同样的问题，但一直没有找到。升级到 22.04 后，人们抱怨性能下降，但没有人将这归咎于 wifi。
我的笔记本电脑是配备 16GB RAM 的戴尔 XPS 13。
这是输出journalctl -p 3 -b 0：
Nov 19 09:13:37 XXXX kernel: DMAR: [Firmware Bug]: No firmware reserved region can cover this RMRR [0x000000007b800000-0x000000007fffffff],>
Nov 19 09:13:37 XXXX kernel: x86/cpu: SGX disabled by BIOS.
Nov 19 09:13:37 XXXX kernel: psmouse serio1: synaptics: Unable to query device: -5
Nov 19 09:13:40 XXXX kernel: Bluetooth: hci0: Reading supported features failed (-16)
Nov 19 09:13:45 XXXX gnome-session-binary[1458]: GLib-GIO-CRITICAL: g_bus_get_sync: assertion 'error == NULL || *error == NULL' failed
Nov 19 09:13:45 XXXX gnome-session-binary[1458]: GLib-GIO-CRITICAL: g_bus_get_sync: assertion 'error == NULL || *error == NULL' failed
Nov 19 09:13:47 XXXX systemd[1369]: Failed to start Service for snap application snapd-desktop-integration.snapd-desktop-integration.
Nov 19 09:47:31 XXXX kernel: Bluetooth: hci0: Reading supported features failed (-16)
Nov 19 09:47:37 XXXX kernel: ACPI Error: Cannot release Mutex [PATM], not acquired (20210730/exmutex-357)
Nov 19 09:47:37 XXXX kernel: ACPI Error: Aborting method \_SB.PCI0.LPCB.ECDV._Q66 due to previous error (AE_AML_MUTEX_NOT_ACQUIRED) (202107>
Nov 19 09:49:37 XXXX gdm-password][2272]: gkr-pam: unable to locate daemon control file
Nov 19 09:49:41 XXXX systemd[2284]: Failed to start Application launched by gnome-session-binary.
Nov 19 09:49:46 XXXX gdm-launch-environment][1316]: GLib-GObject: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
Nov 19 18:55:53 XXXX kernel: Bluetooth: hci0: Reading supported features failed (-16)
Nov 19 18:55:53 XXXX bluetoothd[923]: Failed to set mode: Blocked through rfkill (0x12)