I'm cross-posting my comment here from a similar bug (the same bug?) posted below, since this issue is severe for those of us who are low-to- moderately techy. I'm locked out of my computer completely because this -160 update involves a mix of boot failures and graphics failures. Would love a fix soon!
Similar/same bug post here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2128904 My system info: Hardware: Dell Inspiron 14 GPU: RYZEN 7000 / RADEON graphics (no idea current versions since I can't check anything) OS: Linux Mint 21.2 Victoria (based on Ubuntu 22.04 LTS) Affected Kernel: 5.15.0-160-generic I can't get the earlier kernel to boot either (5.15.0-157-generic) Date Issue Occurred: October 18, 2025 immediately after updating Problem Description Computer turns on to black screen Pressing keys during startup doesn't bring up the BIOS/UEFI at all. Escape only gets me to the "grub>" prompt. After hours of searching online, I figured out how to use the grub> command lines. Here's what I'm inputting: grub> set root=(hd0,gpt2) grub> linux /boot/vmlinuz-5.15.0-160-generic root=/dev/sda2 quiet splash nomodeset grub> initrd /boot/initrd.img-5.15.0-160-generic grub> boot This results in 30 seconds of the LM logo appearing, followed by a black screen with the following errors: "[0.329449] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCIO.LPCO.ECO], AE_NOT_FOUND (20210730/dswload2-162) [0.329466] ACPI Error: AE_NOT_FOUND, During name lookup/catalog (20210730/ps object-220) [2.381532] [drm: amdgpu_init [amdgpu]] *ERROR* VGACON disables amdgpu kernel modesetting. BusyBox v1.30.1 (Ubuntu 1:1.30.1-7ubuntu3.1) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs)" When I try to boot the previous 157 version instead, I don't get the amdgpu error, but I do get the first two (ACPI BIOS Error). Fortunately, I have an older computer I can work off of while this bug is fixed, and I have backups of my docs. But if it weren't for that, I'd be totally sunk at this point. I don't understand how to tweak graphics settings and would need to spend hours studying the details before feeling comfy trying. HUGE thanks to those of you with the skills and good-will to troubleshoot things like this! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2128729 Title: Kernel 5.15.0-160 boots without any video output (on AMD) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2128729/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
