Public bug reported:
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
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.
** Affects: bugzilla (Ubuntu)
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Acer Aspire A315 (Ryzen5/Radeon/FHD) Ubuntu 18.04 kernel cant load
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