Public bug reported:
After a recent Ubuntu 20.04 update, (between Oct 1 and Oct 7, I have
been unable to dual boot to Ubuntu 18.10. Ubuntu 20.04 still boots. This
happens on TWO different computer I have. The reason I run 18.10 is
because bug: "hfs+ filesystems fail reading / writing large files" has
yet to be fixed. Once a week I backup my system to a HFS+ formatted USB
Flash drive. I need this to transfer files to my Mac Mini.
The exact error is: Bad Signature /boot/vmlinix-4.18.0-25generic you
will need to reload the kernel first.
I tried booting in the safe mode. Same error.
I tried booting version vmlinix-4.18.0-24generic, same error.
Obviously, my 18.10 kernel CAN'T have changed, as it is well beyond being
updated.
Thus, I suspect that some signature file was updated WITHOUT some older
signatures.
Description: Ubuntu 20.04.1 LTS
Release: 20.04
I expected to boot to Ubuntu 18.10
What happened: I was returned to the grub menu
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-48-generic 5.4.0-48.52
ProcVersionSignature: Ubuntu 5.4.0-48.52-generic 5.4.60
Uname: Linux 5.4.0-48-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: uschcld 1407 F.... pulseaudio
/dev/snd/pcmC0D0p: uschcld 1407 F...m pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: MATE
Date: Thu Oct 8 14:33:21 2020
InstallationDate: Installed on 2020-05-17 (143 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: Acer Aspire E5-576
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-48-generic
root=UUID=75021464-0e3f-4ad2-a466-cf655a6c4dd7 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-5.4.0-48-generic N/A
linux-backports-modules-5.4.0-48-generic N/A
linux-firmware 1.187.3
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/06/2018
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: V1.47
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: Ironman_SK
dmi.board.vendor: KBL
dmi.board.version: V1.47
dmi.chassis.type: 10
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnInsydeCorp.:bvrV1.47:bd09/06/2018:svnAcer:pnAspireE5-576:pvrV1.47:rvnKBL:rnIronman_SK:rvrV1.47:cvnChassisManufacturer:ct10:cvrChassisVersion:
dmi.product.family: Aspire E 15
dmi.product.name: Aspire E5-576
dmi.product.sku: 0000000000000000
dmi.product.version: V1.47
dmi.sys.vendor: Acer
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
** Description changed:
After a recent Ubuntu 20.04 update, (between Oct 1 and Oct 7, I have
been unable to dual boot to Ubuntu 18.10. Ubuntu 20.04 still boots. This
happens on TWO different computer I have. The reason I run 18.10 is
because bug: "hfs+ filesystems fail reading / writing large files" has
yet to be fixed. Once a week I backup my system to a HFS+ formatted USB
Flash drive. I need this to transfer files to my Mac Mini.
The exact error is: Bad Signature /boot/vmlinix-4.18.0-25generic you
will need to reload the kernel first.
I tried booting in the safe mode. Same error.
I tried booting version vmlinix-4.18.0-24generic, same error.
Obviously, my 18.10 kernel CAN'T have changed, as it is well beyond being
updated.
Thus, I suspect that some signature file was updated WITHOUT some older
signatures.
Description: Ubuntu 20.04.1 LTS
Release: 20.04
I expected to boot to Ubuntu 18.10
What happened: I was returned to the grub menu
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-48-generic 5.4.0-48.52
ProcVersionSignature: Ubuntu 5.4.0-48.52-generic 5.4.60
Uname: Linux 5.4.0-48-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.8
Architecture: amd64
AudioDevicesInUse:
- USER PID ACCESS COMMAND
- /dev/snd/controlC0: uschcld 1407 F.... pulseaudio
- /dev/snd/pcmC0D0p: uschcld 1407 F...m pulseaudio
+ USER PID ACCESS COMMAND
+ /dev/snd/controlC0: uschcld 1407 F.... pulseaudio
+ /dev/snd/pcmC0D0p: uschcld 1407 F...m pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: MATE
Date: Thu Oct 8 14:33:21 2020
InstallationDate: Installed on 2020-05-17 (143 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: Acer Aspire E5-576
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-48-generic
root=UUID=75021464-0e3f-4ad2-a466-cf655a6c4dd7 ro quiet splash vt.handoff=7
RelatedPackageVersions:
- linux-restricted-modules-5.4.0-48-generic N/A
- linux-backports-modules-5.4.0-48-generic N/A
- linux-firmware 1.187.3
+ linux-restricted-modules-5.4.0-48-generic N/A
+ linux-backports-modules-5.4.0-48-generic N/A
+ linux-firmware 1.187.3
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/06/2018
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: V1.47
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: Ironman_SK
dmi.board.vendor: KBL
dmi.board.version: V1.47
dmi.chassis.type: 10
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnInsydeCorp.:bvrV1.47:bd09/06/2018:svnAcer:pnAspireE5-576:pvrV1.47:rvnKBL:rnIronman_SK:rvrV1.47:cvnChassisManufacturer:ct10:cvrChassisVersion:
dmi.product.family: Aspire E 15
dmi.product.name: Aspire E5-576
dmi.product.sku: 0000000000000000
dmi.product.version: V1.47
dmi.sys.vendor: Acer
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https://bugs.launchpad.net/bugs/1899066
Title:
Dual boot Ubuntu 18.10 fails after Ubuntu 20.04 update - Bad Signature
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