I think this problem has been verified because it affects many people. [SUMMARY] Kernels (even the newest) can't load on same Acer and Lenovo notebook types because of this error and freezing: https://bugzilla.kernel.org/attachment.cgi?id=276591 Tsc clocksource calibration then soft lockup
There are several workaround for this which can help to identify this. 1. noapic kernel parameter 2. ivrs_ioapic[4]=00:14.0 ivrs_ioapic[5]=00:00.2 (these are maybe the smbus and iommu controllers ) 3. acpi_osi=! acpi_osi=\"Windows 2009\" (no automatic stanby mode with this) I can attach more recent dmesg logs and even SSDT DSDT tables if that is needed. I think all necessary information are available to fix this problem, so !!!PLEASE DON'T SPAM!!! this thread from now on. It won't help. -- 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/1776563 Title: Acer Aspire A315 IOAPIC failure on Ubuntu 18.04, kernel hangs, can't load, kernel freeze (AMD Ryzen 5/Radeon/Raven) / AMDGPU Hybrid crash Status in amd: Fix Released Status in Linux: Fix Released Status in linux package in Ubuntu: Triaged Bug description: CPU: Ryzen 5 2500U VGA: Radeon 535 Notebook: Acer Aspire A315 This is a brand new notebook on the market with Ryzen 5/Radeon. The default kernel of Ubuntu(18.04) hangs at loading with message: tsc: Refined TSC clocksource calibration: 1996.250 MHz clocksource: tsc: mask: 0xffffffffffffffff max_cycles: (...), max_idle_ns: (...) Soft lockup Using pci=noacpi kernel parameter kernel loads without any problem but my notebook produces more heat than on Win10. If I know right Acer notebooks need ACPI to the correct power management. The same thing happens on mainline 4.17,4.18rc1-2. BIOS upgrade to the latest version: 1.08 hasn't helped This problem has been reported upstream: https://bugzilla.kernel.org/show_bug.cgi?id=200087 The latest correctly working kernel was 4.13.* but the heat problem was present with this too. To manage notifications about this bug go to: https://bugs.launchpad.net/amd/+bug/1776563/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
