Public bug reported:
When choosing the first Grub option to start Lubuntu, I immediately get
the error and it hangs:
[0:nnnnnn] pci: 0000:00:00.2 AMD-ViL Unable to write to IOMMU perf
counter.
- Choosing the Grub option to "check disc for defects," results in
the same error/hang.
- Choosing safe mode works (and is from which I submitted this bug
report)
Laptop: Acer Aspire 5 (A515-43-R19L, bios 1.06) with Ryzen 3 3200u
(Radeon Vega 3 gfx)
Note: This laptop has successfully installed 20 or so distros. In one
case using (Sparky Linux's dev/test ISO) it installed fine with the 5.3
kernel. But, when I performed the system update, it gave me kernel 5.4
which booted, but wouldn't startx. Choosing 5.3 from the Grub menu
booted fine again.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: syslinux 3:6.04~git20190206.bf6db5b4+dfsg1-2
ProcVersionSignature: Ubuntu 5.4.0-12.15-generic 5.4.8
Uname: Linux 5.4.0-12-generic x86_64
ApportVersion: 2.20.11-0ubuntu16
Architecture: amd64
CasperVersion: 1.438build1
CurrentDesktop: LXQt
Date: Sun Feb 9 16:13:57 2020
LiveMediaBuild: Lubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200208)
SourcePackage: syslinux
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: syslinux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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https://bugs.launchpad.net/bugs/1862527
Title:
Lubuntu 20.04 daily build (2020-02-08) Won't boot LiveUSB
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