ACPI rtc alarm in openSUSE 11.0

English Install/Boot/Login
#1

Anyone tried the ACPI alarm rtcwake function in openSUSE 11.0.
Is it working?

It was broken in openSUSE 10.3 - it hope it is fixed in openSUSE 11.0 - but my first tests failed.

When I echo a date into /sys/class/rtc/rtc0/wakealarm the file stays empty for some reason.

#2

I got the same issue. Tried rtcwakeup as well but that didn’t echo anything to the file either.

Then I tried:

echo 0 > /sys/class/rtc/rtc0/wakealarm
echo date '+%s' -d '+ 5 minutes' > /sys/class/rtc/rtc0/wakealarm

from

ACPI Wakeup - MythTV

For some reason this did echo into the file. I’ve yet to investigate why.

#3

Got it working and updated the mythTV wiki about the subject.
ACPI Wakeup - MythTV

echo 0 > /sys/class/rtc/rtc0/wakealarm
echo date '+%s' -d '+ 5 minutes' > /sys/class/rtc/rtc0/wakealarm
cat /sys/class/rtc/rtc0/wakealarm

#4

I’ve found I didn’t have to do the reset so my command (in MythTv) to set the time was just:

echo $time > /sys/class/rtc/rtc0/wakealarm