OK, I have a clearer idea of what's happening.
I can resolve this problem by adding a sleep 5 in checkroot.sh
if [ -d /proc/acpi ]; then
modprobe ac >/dev/null 2>&1
fi
on_ac_power >/dev/null 2>&1
sleep 5
#log_success_msg "Result from on_ac_power is $?"
if [ "$?" -eq 1 ]
then
log_warning_msg "On battery power, so skipping file
system check."
rootcheck=no
fi
If I don't add the sleep , then $? is equal to 1 even if I'm not on battery
while, after adding the sleep, $? is correctly 0 when I'm on AC.
So, in my opinion, during my boot, something in the modprobe command takes too
much time and the value of $? is checked too early. If this is the problem, I
think there should be a pause in the script until the module is inserted and
works correctly.
This solves the problem only partially, because e2fsck still detects the laptop
as running on batteries, and doubles the max mount count parameter.
--
No AC detection before running e2fsck
https://bugs.launchpad.net/bugs/252682
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