Similar to comment #6. Here is the log of another Mt. Jade with AltraMax reproducing this issue with Ubuntu kernel.
[ 8.308100] ------------[ cut here ]------------^M [ 8.308185] GICv3: CPU248: using allocated LPI pending table @0x00000800026a0000^M [ 8.314742] Dying CPU not properly vacated!^M [ 16.480898] WARNING: CPU: 0 PID: 1 at kernel/sched/core.c:9215 sched_cpu_dying+0x1d0/0x2a0^M [ 16.493557] Modules linked in:^M [ 16.496658] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.15.0-43-generic #46~20.04.1-Ubuntu^M [ 16.505065] pstate: 604000c9 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)^M [ 16.512146] pc : sched_cpu_dying+0x1d0/0x2a0^M [ 16.516483] lr : sched_cpu_dying+0x1d0/0x2a0^M [ 16.520822] sp : ffff80000881bbe0^M [ 16.524187] x29: ffff80000881bbe0 x28: ffffc747c462da80 x27: 0000000000000000^M [ 16.531443] x26: ffff78f67d08a000 x25: 00000000000000f8 x24: ffff403e40f12728^M [ 16.538703] x23: ffffc747c4632618 x22: 0000000000000000 x21: 00000000000000f8^M [ 16.545961] x20: ffffc747c3e99100 x19: ffff403e40f23100 x18: 0000000000000014^M [ 16.553222] x17: 6136323030303830 x16: 3030303078304020 x15: 656c62617420676e^M [ 16.560480] x14: 69646e6570204950 x13: 3030303061363230 x12: 3030383030303030^M [ 16.567738] x11: 78304020656c6261 x10: 7420676e69646e65 x9 : ffffc747c1f639a0^M [ 16.574995] x8 : 6c6c6120676e6973 x7 : 205d353831383033 x6 : c0000000fffeffff^M [ 16.582255] x5 : 000000000017ffe8 x4 : 0000000000000000 x3 : ffff80000881b8c8^M [ 16.589512] x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000^M [ 16.596772] Call trace:^M [ 16.599252] sched_cpu_dying+0x1d0/0x2a0^M [ 16.603238] cpuhp_invoke_callback+0x14c/0x5a8^M [ 16.607757] cpuhp_invoke_callback_range+0x5c/0xb8^M [ 16.612627] _cpu_up+0x234/0x360^M [ 16.615904] cpu_up+0xb8/0x110^M [ 16.619003] bringup_nonboot_cpus+0x7c/0xb0^M [ 16.623254] smp_init+0x3c/0x98^M [ 16.626444] kernel_init_freeable+0x1a4/0x39c^M [ 16.630871] kernel_init+0x2c/0x158^M [ 16.634415] ret_from_fork+0x10/0x20^M [ 16.638046] ---[ end trace b4903e61a7ade0b4 ]---^M [ 16.642739] CPU248 enqueued tasks (0 total):^M ** Attachment added: "kopter.log" https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1990294/+attachment/5640544/+files/kopter.log -- 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/1990294 Title: Ampere AltraMax sometimes hangs after "EFI stub: Exiting boot services..." Status in grub2 package in Ubuntu: New Status in linux package in Ubuntu: In Progress Bug description: When kernel test rebooted onto the 5.15.0-43-generic HWE kernel, no output appeared on the console after the EFI stub: Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint A0 Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint AD EFI stub: Booting Linux Kernel... EFI stub: ERROR: FIRMWARE BUG: kernel image not aligned on 64k boundary EFI stub: Using DTB from configuration table EFI stub: Exiting boot services... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1990294/+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
