The solution for Acer A315-41G-* notebooks: (USE AT YOUR OWN RISK - PLS be very careful)
1. Load kernel with these parameters: ivrs_ioapic[4]=00:14.0 ivrs_ioapic[5]=00:00.2 nomodeset This is how it can be done (1. answer/first half 1-4): https://askubuntu.com/questions/19486/how-do-i-add-a-kernel-boot-parameter 1/b.(if it is not installed) Install ubuntu and load installed kernel again using the parameters (see 1.) 2. Start a terminal and do these steps: > cd ~ > mkdir kernelbuild > cd kernelbuild > wget -c https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.17.6.tar.xz > tar -xvf linux-4.17.6.tar.xz > cd linux-4.17.6 > sudo apt install git build-essential kernel-package fakeroot libncurses5-dev > libssl-dev ccache bison flex > make menuconfig +> Save,OK,EXIT > nano .config +> ctrl+w and search for CONFIG_VGA_SWITCHEROO=y +> replace y with n (this is not ideal and should be fixed later) +> ctrl+o, enter > make -j4 (this will take a while, be patient) > make modules_install > sudo make install > sudo nano /etc/default/grub +> Edit the correct line and add the parameters: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash ivrs_ioapic[4]=00:14.0 ivrs_ioapic[5]=00:00.2" +>CTRL+O, enter >sudo update-grub +> reboot and start the correct kernel If you install xsensors (sudo apt install xsensors) and start it (xsensors) you can monitor the temperature values of your notebook. (Recommended) -- 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 ACPI failure on Ubuntu 18.04, kernel hangs, can't load, kernel freeze (AMD Ryzen 5/Radeon/Raven) Status in amd: New Status in Linux: Incomplete Status in linux 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
