Public bug reported:
Ran apt to update/upgrade in both of my groovy distros, Lubuntu & U-MATE
20.10 . . . on reboot not only was my grub list broken in both cases but
seemingly the update to the new 5.8.0-12 kernel shows splash logo, but
"logs" to a black screen. Display power light is "on" but screen is
black.
I repeated this several times in both systems . . . having to boot using
SG2 to another distro to repair grub . . . then after I did that I got
to grub list and went to "advanced options" and rolled back to the prior
5.4.0-42 kernel . . . and GUI is operational.
I believe in TW I am running 5.7 kernel and that system has video. I
have an Nvidia card and I'm using "nouveau" as my driver.
ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: linux-image-5.4.0-42-generic 5.4.0-42.46
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
ApportVersion: 2.20.11-0ubuntu43
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: non-space2 1665 F.... pulseaudio
/dev/snd/controlC0: non-space2 1665 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: LXQt
Date: Mon Aug 3 15:45:08 2020
InstallationDate: Installed on 2019-06-17 (413 days ago)
InstallationMedia: Lubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
IwConfig:
lo no wireless extensions.
enp9s0 no wireless extensions.
enp10s0 no wireless extensions.
MachineType: Apple Inc. MacPro5,1
ProcFB: 0 nouveaudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-42-generic
root=UUID=17bcb813-d05e-4cc3-bcdf-16d283156780 ro quiet splash
resume=UUID=f9ae531f-ec45-4a13-a75d-d3fd4cd80fe0
RelatedPackageVersions:
linux-restricted-modules-5.4.0-42-generic N/A
linux-backports-modules-5.4.0-42-generic N/A
linux-firmware 1.189
RfKill:
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
SourcePackage: linux
UpgradeStatus: Upgraded to groovy on 2019-12-13 (234 days ago)
dmi.bios.date: 07/30/2018
dmi.bios.vendor: Apple Inc.
dmi.bios.version: 138.0.0.0.0
dmi.board.asset.tag: 0
dmi.board.name: Mac-F221BEC8
dmi.board.vendor: Apple Inc.
dmi.chassis.type: 7
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-F221BEC8
dmi.modalias:
dmi:bvnAppleInc.:bvr138.0.0.0.0:bd07/30/2018:svnAppleInc.:pnMacPro5,1:pvr0.0:rvnAppleInc.:rnMac-F221BEC8:rvr:cvnAppleInc.:ct7:cvrMac-F221BEC8:
dmi.product.family: MacPro
dmi.product.name: MacPro5,1
dmi.product.sku: System SKU#
dmi.product.version: 0.0
dmi.sys.vendor: Apple Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug groovy
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https://bugs.launchpad.net/bugs/1890211
Title:
5.8 kernel appears to break video in two groovy installs
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