Bug 458628 - rtc wakealarm no longer working
rtc wakealarm no longer working
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Kernel Maintainer List
Fedora Extras Quality Assurance
Depends On:
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Reported: 2008-08-11 03:26 EDT by ericm24x7
Modified: 2008-10-29 18:33 EDT (History)
2 users (show)

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Doc Type: Bug Fix
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Last Closed: 2008-10-29 18:33:16 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description ericm24x7 2008-08-11 03:26:25 EDT
Description of problem:
Using /sys/class/rtc/rtc0/wakealarm to automatically turn on the system at pre-set time no longer works. Wakealarm currently functioning under FC9.

Version-Release number of selected component (if applicable):
kernel 2.6.27-0.244.rc2.git1.fc10.x86_64

How reproducible:

Steps to Reproduce:
1. Disable RTC alarm setting under BIOS
 * Assumed that we want to wake up the system in 5 minutes.
 * Time is set to LOCAL instead of UTC
 * Local time is set EST (New York time, UTC + 4hrs)
   => 240 min
2. # initialize wakealarm
   echo > /sys/class/rtc/rtc0/wakealarm
3. # set to wake up in 5 minutes. (-235 => adjusted for EST -4hrs) 
   echo `date '+%s' -d '-235 min'` > /sys/class/rtc/rtc0/wakealarm
4. # verify the alarm setting
   cat /proc/driver/rtc  
5. /sbin/shutdown -h now  

Actual results:
PC does not wake up

Expected results:
should automatically turned on PC in 5 minutes

Additional info:
Comment 1 Christopher D. Stover 2008-10-28 16:06:19 EDT
Has this still been an issue for you in newer kernels eric?
Comment 2 ericm24x7 2008-10-29 18:32:55 EDT
It is working on the latest rawhide build. Thanks.

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