You can use apt purge to remove installed kernel: sudo apt purge linux-
image-... linux-header-..., where ... is the version you want to remove.
** Changed in: linux (Ubuntu)
Status: Incomplete => Invalid
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https://bugs.launchpad.net/bugs/1893624
Title:
Ryzen 4800u, kernel 5.8.5 boot errors (AMD-Vi, ACPI, HDCP, Bluetooth)
Status in linux package in Ubuntu:
Invalid
Bug description:
Lenovo Ideapad S540 13ARE (AMD Ryzen 4800U).
Ubuntu Budgie 20.04.1 LTS, updated kernel to 5.8.5. Secure Boot disabled.
Clean install with entire disk (Windows came preinstalled) wiped out.
Most things work just fine. If not for the errors shown during boot, I
would not have noticed the issues.Video (native resolutions works),
audio, wifi, suspend, the quick buttons (brightness, volume etc) all
work fine. However during boot, errors are shortly shown:
asterix@Idefix:~$ sudo dmesg -l err
[ 3.204455] pci 0000:00:00.2: AMD-Vi: Unable to read/write to IOMMU perf
counter.
[ 4.901524] I2C multi instantiate pseudo device driver INT3515:00: IRQ
index 1 not found
[ 4.919327] snd_pci_acp3x 0000:03:00.5: Invalid ACP audio mode : 0
[ 4.939476] ACPI Error: No handler for Region [ECSI] (00000000bf2d92b9)
[EmbeddedControl] (20200528/evregion-127)
[ 4.939724] ACPI Error: Region EmbeddedControl (ID=3) has no handler
(20200528/exfldio-261)
[ 4.939929] ACPI Error: Aborting method \_SB.UBTC.ECRD due to previous
error (AE_NOT_EXIST) (20200528/psparse-529)
[ 4.940212] ACPI Error: Aborting method \_SB.UBTC._DSM due to previous
error (AE_NOT_EXIST) (20200528/psparse-529)
[ 4.940517] ucsi_acpi USBC000:00: ucsi_acpi_dsm: failed to evaluate _DSM 2
[ 5.235689] acp_pdm_mach acp_pdm_mach.0: snd_soc_register_card(acp)
failed: -517
[ 6.273068] [drm:dm_helpers_dp_write_dpcd [amdgpu]] *ERROR* Failed to find
connector for link!
[ 6.273591] [drm:dm_helpers_dp_write_dpcd [amdgpu]] *ERROR* Failed to find
connector for link!
[ 6.273748] [drm:dm_helpers_dp_write_dpcd [amdgpu]] *ERROR* Failed to find
connector for link!
[ 7.036019] [drm:mod_hdcp_add_display_to_topology [amdgpu]] *ERROR* Failed
to add display topology, DTM TA is not initialized.
[ 7.891436] Bluetooth: hci0: Failed to send Intel_Write_DDC (-22)```
lspci-vnvn.log: https://pastebin.com/Kygie8nu
What can I do to help solve this? Note I am not a developer and a Linux
novice.
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.8
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: Budgie:GNOME
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2020-08-30 (0 days ago)
InstallationMedia: Ubuntu-Budgie 20.04.1 LTS "Focal Fossa" - Release amd64
(20200731)
Package: linux (not installed)
Tags: focal
Uname: Linux 5.8.5-050805-generic x86_64
UnreportableReason: The running kernel is not an Ubuntu kernel
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip input lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
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