Public bug reported:
This is Pi specific. The problem is that in older releases where we use
u-boot in the Ubuntu raspi images, flash-kernel uses default kernel
commandline options 'quiet splash' (from /usr/share/flash-
kernel/default/flash-kernel) which end up hard-coded in
/boot/firmware/boot.scr, specifically this line:
setenv bootargs " ${bootargs} quiet splash"
This line basically extends the kernel commandline options specified in
/boot/firmware/cmdline.txt. On Pi, there should only be one place to
specify kernel options and that's cmdline.txt, u-boot/flash-kernel
should not modify or extend these options.
We recently had a customer issue where we needed to enable kernel
logging over the serial console which required modification of
cmdline.txt *and* rebuilding boot.scr to drop 'quiet splash'. We should
not have to touch boot.scr for this.
** Affects: flash-kernel (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2073835
Title:
Default kernel commandline options on Raspberry Pi
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