"The fact that ACPI was designed by a group of monkeys high on LSD, and is some of the worst designs in the industry obviously makes running it at any point pretty damn ugly." Torvalds, Linus (2005-07-31). Message. linux-kernel mailing list. IU. Retrieved on 2006-08-28.
-- 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: Ubuntu 18.04 can't load kernel on Acer Aspire A315 (Ryzen5/Radeon/FHD) Status in amd: New Status in linux package in Ubuntu: Confirmed Status in xserver-xorg-video-amdgpu package in Ubuntu: Confirmed Bug description: CPU: Ryzen 5 2500U VGA: Radeon 535 Notebook: Acer Aspire A315 I've just bought a new AMD Ryzen/Radeon notebook (Acer Aspire 3) and I wanted to install an Ubuntu/Kubuntu 18.04 on it. I checked the bios settings and uefi was the only boot option, so there is no legacy mode what I had used with my old computer before. I downloaded the normal iso image and made an usb boot pendrive using mkusb. The boot was okay, I got an uefi type menu but after starting the kernel it paniced(?) instantly. Error messages: ACPI Error [MAC0] Namespace lookup failure ACPI ERROR 1 table load failures, 13 successful BUG: soft lockup CPU#0 stuck for 22s ... ... EFI VGA framebuffer device clocksource tsc mask Switching to colour framebuffer device [28.040001] ... ... ... I've tried to boot the same pendrive on my girlfriend's Acer Travelmate with uefi and worked well. I searched and I found that the problem is maybe in connection with uefi framebuffer but I am not sure. Ubuntu 16.04 can be loaded with nomodeset and noacpi parameters but for 18.04 none of them are working. I tried 4.16,4.17 kernels too (replaced on live usb) but without any success. The result is totally equivalent. 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
