Public bug reported:
-> tested on raspberry 3b+ and 4b
After a fresh install of Ubuntu 20.04
(focal-preinstalled-server-arm64+raspi3.img), the rpi boots normally.
Then execute an apt update/upgrade
The Raspberry doesn't boot (no output on the console)
Reverting the device tree to the previous version resolve the issue (a
.bak is kept during the upgrade) (file bcm2710-rpi-3-b-plus.dtb for
Raspberry 3b+, bcm2711-rpi-4-b.dtb for Rpi 4b)
package linux-modules-5.4.0-1004-raspi2
$ cat /etc/os-release
NAME="Ubuntu"
VERSION="20.04 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu Focal Fossa (development branch)"
VERSION_ID="20.04"
HOME_URL="https://www.ubuntu.com/;
SUPPORT_URL="https://help.ubuntu.com/;
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/;
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy;
VERSION_CODENAME=focal
UBUNTU_CODENAME=focal
$ dpkg -S bcm2710-rpi-3-b-plus.dtb
linux-modules-5.4.0-1004-raspi2:
/lib/firmware/5.4.0-1004-raspi2/device-tree/broadcom/bcm2710-rpi-3-b-plus.dtb
linux-modules-5.4.0-1001-raspi2:
/lib/firmware/5.4.0-1001-raspi2/device-tree/broadcom/bcm2710-rpi-3-b-plus.dtb
linux-modules-5.3.0-1017-raspi2:
/lib/firmware/5.3.0-1017-raspi2/device-tree/broadcom/bcm2710-rpi-3-b-plus.dtb
$ apt show linux-modules-5.4.0-1004-raspi2
Package: linux-modules-5.4.0-1004-raspi2
Version: 5.4.0-1004.4
Priority: optional
Section: universe/kernel
Source: linux-raspi2
Origin: Ubuntu
Maintainer: Ubuntu Kernel Team
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Installed-Size: 176 MB
Download-Size: 29.9 MB
APT-Manual-Installed: no
APT-Sources: http://ports.ubuntu.com/ubuntu-ports focal/universe arm64 Packages
Description: Linux kernel extra modules for version 5.4.0 on ARMv8 SMP
Contains the corresponding System.map file, the modules built by the
packager, and scripts that try to ensure that the system is not left in an
unbootable state after an update.
.
Supports Generic processors.
.
Geared toward desktop and server systems.
.
You likely do not want to install this package directly. Instead, install
the linux-raspi2 meta-package, which will ensure that upgrades work
correctly, and that supporting packages are also installed.
** Affects: linux-raspi2 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1868222
Title:
rpi don't boot with 5.4.0-1004-raspi2
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