Public bug reported:
The armhf kernel on the current uc20 beta image (5.4.0-1011.11 r156) boots fine
on rpi4, but when the system refreshes to 5.4.0-1011.15 r179, the system does
not boot. After it gets to "Starting kernel..." it just stops. Attempting to
power off/on the device after the failed boot fails in the uboot script:
Hit any key to stop autoboot: 0
switch to partitions #0, OK
mmc0 is current device
Scanning mmc 0:1...
Found U-Boot script /boot.scr
4638 bytes read in 28 ms (161.1 KiB/s)
## Executing script at 02400000
4096 bytes read in 39 ms (102.5 KiB/s)
131072 bytes read in 45 ms (2.8 MiB/s)
131072 bytes written in 89 ms (1.4 MiB/s)
SCRIPT FAILED: continuing...
45618 bytes read in 41 ms (1.1 MiB/s)
Card did not respond to voltage select!
starting USB...
...
This does not seem to happen with the arm64 kernel, and booting the
armhf kernel seems to work fine on pi3 devices - it just seems to be the
combination of armhf and rpi4 that breaks right now.
** Affects: snapd
Importance: Undecided
Status: New
** Affects: linux-raspi2 (Ubuntu)
Importance: Undecided
Status: New
** Tags: uc20
** Tags added: uc20
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https://bugs.launchpad.net/bugs/1888691
Title:
[uc20] rpi4 does not boot with armhf on recent 5.4 kernel snaps
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