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I'm trying to install Ubuntu 18.04 on my computer using a bootable USB stick. I'm using Rufus to install the Linux ISO with a MBR partition scheme with target system of BIOS or UEFI and a FAT32 File System. When I try to boot Ubuntu via the USB stick in the BIOS (v 1.4.4) and select the Try Ubuntu without installing option this error screen pops up, and after a few seconds it reboots Windows and shows the normal login screen. I disabled Secure Boot, but it doesn't seem to work.

The error that pops on the screen is the following:

ACPI BIOS Error (Bug): Could not resolve symbol ... AE_NOT_FOUND,   
ACPI Error: AE_NOT_FOUND, During name lookup/catalog  
AMD-Vi: Unable to read/write to IOMMU perf counter.
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    Why exactly are you trying to install such an old version of Ubuntu?
    – Ramhound
    Commented Jan 11, 2021 at 23:46
  • I need to work with a version of ROS that is only available under the 18.04.5 Ubuntu distribution.
    – Ricardo Chapa
    Commented Jan 25, 2021 at 21:58

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