Trying to find out, if bug #1883065 [1] is a duplicate of this one. Is this a laptop? If yes, does having the power cable plugged in make a difference?
Starting with `maxcpus=1` and then trying to bring more CPUs online, on the Dell Precision 3540 with dedicated AMD graphics card, it always hangs after one or two more CPUs when on battery. With the power cable, it often works, but I saw it also failing. I reported the issue to the Linux Kernel Mailing List *Intel laptop: Starting with `maxcpus=1` and then bringing other CPUs online freezes system* [2]. [1]: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1883065 [2]: https://lkml.org/lkml/2020/6/11/474 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1862751 Title: Hard lockups using microcode releases 20191115 on Intel Whiskey Lake To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1862751/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
