I'm running FC6 on an ASUS A6U series laptop. I have been using /proc/acpi/alarm to suspend it and resume at a particular time, so it can be used as an alarm clock and pump radio 4 into the bedroom. Over the weekend I updated to the latest kernel, 2.6.22. In this kernel /proc/acpi/alarm is gone. Googling for it I found that it was considered legacy and removed in this kernel, replaced by /sys/class/rtc/rtc0/wakealarm, which uses a different format, but is supposed to do the same job. Except it doesn't on my laptop. What little documentation there is for this says that it should take the seconds since the epoch (e.g the result of date -d "+10 minutes" +%s). This is silently rejected. I found a program called rtcwake posted on the lkml mailing list.. This has a test mode which works, i.e. it sets a value into wakealarm and then continues after the alarm expires. The value set is much larger than the number of seconds. Someone else saw "a constant difference of 869984896 seconds" on their system. My difference is also constant, but different to this (sorry I didn't write it down and the laptop is not with me). rtcwake sets the wakealarm value and sets the hibernate state (mem, disk or standby) but the machine never tries to wake up. Does anyone have any suggestions to make this work again - using the rtc or any other mechanism? For the time being I've rolled back to 2.6.20, but I'd like to be able to update to F8 and beyond eventually. Thanks for any help. Chris
