I don't know if it is the same problem, but the Lenovo notebooks Lenovo E585 and Lenovo E485 with Ryzen 5 2500U or Ryzen 7 2700U also do not boot on Linux. This is very frustrating, because you have to add command lines to GRUB make them even able to boot on Linux:
ivrs_ioapic[32]=00:14.0 ivrs_ioapic[33]=00:00.1 and spec_store_bypass_disable=on or spec_store_bypass_disable=seccomp Otherwise Linux does not boot. Thanks to evilazrael who found that workaround, otherwise still no-one would be able to boot a Linux distribution on the laptop. The initial analysis from him you find here: https://evilazrael.de/node/401 An ongoing discussion of the case you find here: https://forums.lenovo.com/t5/ThinkPad-11e-Windows-13-E-and/ThinkPad-E485-E585-Firmware-bug-ACPI-IVRS-table/m-p/4191484 It would be nice if it would be fixed, because many user will relinquish using Linux if it does not boot on the first time, and also all others users need a fix, because the workaround may reduces performance and increases power use. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-firmware 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: Incomplete Status in linux package in Ubuntu: Triaged Status in linux-firmware package in Ubuntu: Confirmed 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 : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
