https://bugzilla.kernel.org/show_bug.cgi?id=210689
--- Comment #8 from Daniele (crudo.dani...@gmail.com) --- So sad nobody has replied...anyway, I swapped the motherboard with my second workstation, same asus z9ped8 ws, same bios v.5802, different cpus: previous ones were engineering samples QB7R e5-2687w, these are e5-2687w SR0KG: issue not solved. I swapped the quadro 600 gpu with a GeForce 8400 GS: issue not solved Tried acpi_osi='!Windows2012' in grub: issue not solved Tried disabling watchdog and disabling spectre/meltdown security patches: issue not solved I tried the old 4.9 kernel: issue not solved It doesn't seem the issue has anything to do with iommu enabled: it happens without any modifications to the grub file and with the live usb. I tried also ubuntu 20.04 lts server: issue not solved In all cases the workstation hangs in S5: if I open the case I can see q-code 05. In only one case during my tests there was a kernel panic visible on monitor: not syncing - Fatal exception in interrupt (follows image attachment) I can't say it's related with the current issue or not. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla