I confirm that the bug has been fixed. I just received an updated Nvidia driver, version 525. Once installed my system is now back to normal, i.e. smooth boot and shutdown. Thanks a lot.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1995021 Title: Boot and shutdown take several minutes. "watchdog: BUG: soft lockup - CPU#0 stuck for 26s!" followed by nvidia kernel crash Status in linux package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-515 package in Ubuntu: New Bug description: My system has been running smoothly until Kernel 5.15.0-50 (and 5.15.0-52) was installed. Now boot and shutdown take several minutes. I have an Nvidia Gforce 1050 and Nvidia driver 515. Boot and shutdown run witout delay with the Nouveau and Nvidia 390 drivers but the OpenCl is unavailable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1995021/+subscriptions -- 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