You have been subscribed to a public bug: Ubuntu 20.04 LTS and Ubuntu 21.04 occasionally boots with very bad performance and very unresponsive to user input on Lenovo laptop Lenovo 300e 2nd Gen 81M9 (LENOVO_MT_81M9_BU_idea_FM_300e 2nd G).
When this happens you can read this kind of messages on journal: --- root@alumne-1-58:~# journalctl | grep "BUG: soft" may 20 21:44:35 alumne-1-58 kernel: watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [swapper/3:0] may 20 21:44:35 alumne-1-58 kernel: watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [swapper/3:0] may 22 09:33:34 alumne-1-58 kernel: watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [swapper/0:0] may 24 16:45:14 alumne-1-58 kernel: watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [prometheus-node:4220] may 24 16:45:14 alumne-1-58 kernel: watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [swapper/0:0] jun 03 00:01:09 alumne-1-58 kernel: watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [swapper/0:0] jun 03 00:01:09 alumne-1-58 kernel: watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [swapper/0:0] jun 03 00:01:09 alumne-1-58 kernel: watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [swapper/1:0] jun 03 00:01:09 alumne-1-58 kernel: watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [swapper/0:0] jun 03 00:02:15 alumne-1-58 kernel: watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [swapper/0:0] jun 05 08:22:58 alumne-1-58 kernel: watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [irq/138-iwlwifi:1044] jun 05 08:25:06 alumne-1-58 kernel: watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [swapper/2:0] jun 05 08:25:06 alumne-1-58 kernel: watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [irq/138-iwlwifi:1044] jun 05 08:26:42 alumne-1-58 kernel: watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [lxd:3975] jun 05 08:26:42 alumne-1-58 kernel: watchdog: BUG: soft lockup - CPU#2 stuck for 23s! [swapper/2:0] jun 05 08:26:42 alumne-1-58 kernel: watchdog: BUG: soft lockup - CPU#3 stuck for 23s! [irq/138-iwlwifi:1044] jun 05 08:27:38 alumne-1-58 kernel: watchdog: BUG: soft lockup - CPU#3 stuck for 23s! [irq/138-iwlwifi:1044] jun 05 08:28:34 alumne-1-58 kernel: watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [irq/138-iwlwifi:1044] jun 05 08:29:46 alumne-1-58 kernel: watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [irq/138-iwlwifi:1044] root@alumne-1-58:~# --- Usually if you reboot everything works fine but it's very annoying when happens. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: bot-comment kernel-bug -- kernel: watchdog: BUG: soft lockup - CPU#3 stuck for 22s! https://bugs.launchpad.net/bugs/1931001 You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp