Dear Ubuntu Maintainers, here is the summary:
1. Kernel freeze can be resolved by using the mentioned kernel parameters: > ivrs_ioapic[4]=00:14.0 ivrs_ioapic[5]=00:00.2 It would be the best if the broken DSTD tables were fixed but I think nobody will do it. The workaround with the parameters seems to be a correct solution. 2. For the amdgpu crash there is a patch what works correctly. It will be merged to the upstream after testing. https://bugzilla.kernel.org/show_bug.cgi?id=200517 Patch: https://bugzilla.kernel.org/attachment.cgi?id=277375&action=diff&collapsed=&headers=1&format=raw ** Summary changed: - Acer Aspire A315 ACPI failure on Ubuntu 18.04, kernel hangs, can't load, kernel freeze (AMD Ryzen 5/Radeon/Raven) + Acer Aspire A315 IOAPIC failure on Ubuntu 18.04, kernel hangs, can't load, kernel freeze (AMD Ryzen 5/Radeon/Raven) / AMDGPU Hybrid crash ** Bug watch added: Linux Kernel Bug Tracker #200517 https://bugzilla.kernel.org/show_bug.cgi?id=200517 -- 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: New Status in Linux: Incomplete Status in linux package in Ubuntu: Confirmed Status in linux-firmware package in Ubuntu: New 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
