Public bug reported:
This is an extension of the "slow boot" bug I reported earlier [Bug
1874104]. I have been working with Jouni Mettala, and he was asking me
to try the most recent kernels, including the latest in development
(5.7.0-050700-rc2). This one not only boots very slowly, but also, I
cannot get past the login screen. When I put in my password and hit
enter, the screen just returns. I have tried this several times and
encountered the same problem except only once. (Not sure why that one
was different. Jouni asked me to report this as a new bug.
I will attach the dmesg for the 5.7 kernel boot that wouldn't get past
the login screen here. Since I can only post one attachment at a time, I
will attach the dmesg for the default kernel boot (5.4.0-26) in the next
message for comparison. That is a slow boot kernel, relative to any
kernel in the 4.15, 5.1 and 5.2 series, but I can at least boot it on
this "late 2015" 27" 5k iMac. For more information on the slow boot
problem, please see Bug Report 1874104.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-26-generic 5.4.0-26.30
ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
Uname: Linux 5.4.0-26-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: mfox 2659 F.... pulseaudio
/dev/snd/controlC0: mfox 2659 F.... pulseaudio
/dev/snd/controlC2: mfox 2659 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sun Apr 26 13:00:28 2020
HibernationDevice: # RESUME=UUID=5e4ca488-e781-4ee7-aeb3-8adc968cd22a
InstallationDate: Installed on 2018-05-09 (717 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
MachineType: Apple Inc. iMac17,1
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_CA.UTF-8
SHELL=/bin/bash
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: \boot\vmlinuz-5.4.0-26-generic ro
root=UUID=0559983a-7175-4ab1-af46-7a117ee78ead
initrd=boot\initrd.img-5.4.0-26-generic
RelatedPackageVersions:
linux-restricted-modules-5.4.0-26-generic N/A
linux-backports-modules-5.4.0-26-generic N/A
linux-firmware 1.187
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/31/2020
dmi.bios.vendor: Apple Inc.
dmi.bios.version: 176.0.0.0.0
dmi.board.name: Mac-B809C3757DA9BB8D
dmi.board.vendor: Apple Inc.
dmi.board.version: iMac17,1
dmi.chassis.type: 9
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-B809C3757DA9BB8D
dmi.modalias:
dmi:bvnAppleInc.:bvr176.0.0.0.0:bd01/31/2020:svnAppleInc.:pniMac17,1:pvr1.0:rvnAppleInc.:rnMac-B809C3757DA9BB8D:rvriMac17,1:cvnAppleInc.:ct9:cvrMac-B809C3757DA9BB8D:
dmi.product.family: iMac17,1
dmi.product.name: iMac17,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug focal
** Attachment added: "dmesg for 5.7.0-050700-rc2 kernel"
https://bugs.launchpad.net/bugs/1875211/+attachment/5360948/+files/dmesg.0
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https://bugs.launchpad.net/bugs/1875211
Title:
Cannot be past login screen in kernel 5.7.0-050700-rc2
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