Comment #19 seems to have a bunch of: kernel: rtw_8822ce 0000:03:00.0: pci bus timeout, check dma status
which can also be seen in the log of comment #17. And that message relates to: Realtek Semiconductor Co., Ltd. RTL8822CE 802.11ac PCIe Wireless Network Adapter It's unclear to me whether that card is causing the problems or just a victim of some deeper bus/motherboard issue. ** Changed in: linux-hwe-5.11 (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1939966 Title: Random system stops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-5.11/+bug/1939966/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs