Chromium browser not launching after Ubuntu 20 upgrade

[Pavel Deg]

After successful upgrade from Ubuntu 19.10 to 20 Chromium browser is not launching. Removing re-installing doesn't help. Installing via apt tells that Chromium browser snap exists.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: chromium-browser 80.0.3987.163-0ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-29.33-generic 5.4.30
Uname: Linux 5.4.0-29-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sat May 9 12:50:45 2020
DiskUsage:
 Filesystem Type Size Used Avail Use% Mounted on
 /dev/sda4 ext4 164G 2.9G 153G 2% /home
 tmpfs tmpfs 7.8G 226M 7.6G 3% /dev/shm
 /dev/sda4 ext4 164G 2.9G 153G 2% /home
InstallationDate: Installed on 2020-04-08 (30 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 002: ID 1058:25e2 Western Digital Technologies, Inc. My Passport (WD40NMZW)
 Bus 001 Device 004: ID 046d:c52b Logitech, Inc. Unifying Receiver
 Bus 001 Device 003: ID 0bc2:ac41 Seagate RSS LLC BUP Portable
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Gigabyte Technology Co., Ltd. Z370 HD3
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-29-generic root=UUID=05511df3-f98b-4a65-be14-d202da25b6ee ro quiet splash vt.handoff=7
Snap.Changes: Error: command ['snap', 'changes', '--abs-time', 'chromium'] failed with exit code 1: error: no changes found
Snap.ChromeDriverVersion: Error: command ['snap', 'run', 'chromium.chromedriver', '--version'] failed with exit code 1: snap-confine has elevated permissions and is not confined but should be. Refusing to continue to avoid permission escalation attacks: Operation not permitted
Snap.ChromiumVersion: Error: command ['snap', 'run', 'chromium', '--version'] failed with exit code 1: snap-confine has elevated permissions and is not confined but should be. Refusing to continue to avoid permission escalation attacks: Operation not permitted
SourcePackage: chromium-browser
UpgradeStatus: Upgraded to focal on 2020-05-09 (0 days ago)
dmi.bios.date: 11/28/2019
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F14b
dmi.board.asset.tag: Default string
dmi.board.name: Z370 HD3-CF
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF14b:bd11/28/2019:svnGigabyteTechnologyCo.,Ltd.:pnZ370HD3:pvrDefaultstring:rvnGigabyteTechnologyCo.,Ltd.:rnZ370HD3-CF:rvrx.x:cvnDefaultstring:ct3:cvrDefaultstring:
dmi.product.family: Default string
dmi.product.name: Z370 HD3
dmi.product.sku: Default string
dmi.product.version: Default string
dmi.sys.vendor: Gigabyte Technology Co., Ltd.

[Pavel Deg (paveldeg)]

BTW, "Ubuntu Software" app is not launching either.

[Olivier Tilloy (osomon)]

The following information is relevant:

Snap.ChromiumVersion: Error: command ['snap', 'run', 'chromium', '--version'] failed with exit code 1: snap-confine has elevated permissions and is not confined but should be. Refusing to continue to avoid permission escalation attacks: Operation not permitted

[Olivier Tilloy (osomon)]

From https://forum.snapcraft.io/t/snap-confine-has-elevated-permissions-and-is-not-confined-but-should-be/4994, it sounds like apparmor might be disabled on your system? Try enabling it again:

    systemctl enable apparmor

[Pavel Deg (paveldeg)]

Enabling apparmor fixed the problem.I just don't get why I have to have this enabled just to get basic apps working, doesn't make sense.

[Olivier Tilloy (osomon)]

apparmor is a basic requirement of snapd, and chromium is now packaged as a snap.