rtcwake: write error

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I'm trying to send my system to sleep using e.g.



rtcwake -v -m disk -s 60


and receive the following output



rtcwake: RTC wird als UTC interpretiert
UTC wird verwendet.
 delta = 1
 tzone = 0
 tzname = UTC
 systime = 1524206927, (UTC) Fri Apr 20 06:48:47 2018
 rtctime = 1524206926, (UTC) Fri Apr 20 06:48:46 2018
Alarm 0, sys_time 1524206927, rtc_time 1524206926, Sekunden 60
rtcwake: wakeup from "disk" using /dev/rtc0 at Fri Apr 20 06:49:47 2018
suspend mode: disk; suspending system
rtcwake: write error


The system seems to start entering the suspend mode but returns back immediately. I'm running Ubuntu 16.04.4 LTS (GNU/Linux 4.13.0-38-generic x86_64). Are there any details, that would help to find the root cause of the problem (dmesg output, /var/log/syslog, ...)?



Thanks in advance,



Bernd




suspend wakeup rtc




share|improve this question




















  • Have you tried mem instead of disk with -m switch? I am guessing hibernation is not possible on the machine since there is not enough swap mem, have you checked this? I am guessing that is the reason why it returns immediately.
    – Abel Tom
    Apr 20 at 9:33







  • 1




    Actually in the meantime I have found the problem. After adding 'hpet=disable' to the Kernel paramters, everthing works as expected.
    – Bernd
    Apr 20 at 10:24











  • The hpet trick does not work for me... :-/
    – xtof54
    Aug 14 at 6:39














up vote
2
down vote

favorite
1












I'm trying to send my system to sleep using e.g.



rtcwake -v -m disk -s 60


and receive the following output



rtcwake: RTC wird als UTC interpretiert
UTC wird verwendet.
 delta = 1
 tzone = 0
 tzname = UTC
 systime = 1524206927, (UTC) Fri Apr 20 06:48:47 2018
 rtctime = 1524206926, (UTC) Fri Apr 20 06:48:46 2018
Alarm 0, sys_time 1524206927, rtc_time 1524206926, Sekunden 60
rtcwake: wakeup from "disk" using /dev/rtc0 at Fri Apr 20 06:49:47 2018
suspend mode: disk; suspending system
rtcwake: write error


The system seems to start entering the suspend mode but returns back immediately. I'm running Ubuntu 16.04.4 LTS (GNU/Linux 4.13.0-38-generic x86_64). Are there any details, that would help to find the root cause of the problem (dmesg output, /var/log/syslog, ...)?



Thanks in advance,



Bernd




suspend wakeup rtc




share|improve this question




















  • Have you tried mem instead of disk with -m switch? I am guessing hibernation is not possible on the machine since there is not enough swap mem, have you checked this? I am guessing that is the reason why it returns immediately.
    – Abel Tom
    Apr 20 at 9:33







  • 1




    Actually in the meantime I have found the problem. After adding 'hpet=disable' to the Kernel paramters, everthing works as expected.
    – Bernd
    Apr 20 at 10:24











  • The hpet trick does not work for me... :-/
    – xtof54
    Aug 14 at 6:39












up vote
2
down vote

favorite
1









up vote
2
down vote

favorite
1






1





I'm trying to send my system to sleep using e.g.



rtcwake -v -m disk -s 60


and receive the following output



rtcwake: RTC wird als UTC interpretiert
UTC wird verwendet.
 delta = 1
 tzone = 0
 tzname = UTC
 systime = 1524206927, (UTC) Fri Apr 20 06:48:47 2018
 rtctime = 1524206926, (UTC) Fri Apr 20 06:48:46 2018
Alarm 0, sys_time 1524206927, rtc_time 1524206926, Sekunden 60
rtcwake: wakeup from "disk" using /dev/rtc0 at Fri Apr 20 06:49:47 2018
suspend mode: disk; suspending system
rtcwake: write error


The system seems to start entering the suspend mode but returns back immediately. I'm running Ubuntu 16.04.4 LTS (GNU/Linux 4.13.0-38-generic x86_64). Are there any details, that would help to find the root cause of the problem (dmesg output, /var/log/syslog, ...)?



Thanks in advance,



Bernd




suspend wakeup rtc




share|improve this question












I'm trying to send my system to sleep using e.g.



rtcwake -v -m disk -s 60


and receive the following output



rtcwake: RTC wird als UTC interpretiert
UTC wird verwendet.
 delta = 1
 tzone = 0
 tzname = UTC
 systime = 1524206927, (UTC) Fri Apr 20 06:48:47 2018
 rtctime = 1524206926, (UTC) Fri Apr 20 06:48:46 2018
Alarm 0, sys_time 1524206927, rtc_time 1524206926, Sekunden 60
rtcwake: wakeup from "disk" using /dev/rtc0 at Fri Apr 20 06:49:47 2018
suspend mode: disk; suspending system
rtcwake: write error


The system seems to start entering the suspend mode but returns back immediately. I'm running Ubuntu 16.04.4 LTS (GNU/Linux 4.13.0-38-generic x86_64). Are there any details, that would help to find the root cause of the problem (dmesg output, /var/log/syslog, ...)?



Thanks in advance,



Bernd





suspend wakeup rtc





share|improve this question











share|improve this question




share|improve this question










asked Apr 20 at 7:06









Bernd

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  • Have you tried mem instead of disk with -m switch? I am guessing hibernation is not possible on the machine since there is not enough swap mem, have you checked this? I am guessing that is the reason why it returns immediately.
    – Abel Tom
    Apr 20 at 9:33







  • 1




    Actually in the meantime I have found the problem. After adding 'hpet=disable' to the Kernel paramters, everthing works as expected.
    – Bernd
    Apr 20 at 10:24











  • The hpet trick does not work for me... :-/
    – xtof54
    Aug 14 at 6:39
















  • Have you tried mem instead of disk with -m switch? I am guessing hibernation is not possible on the machine since there is not enough swap mem, have you checked this? I am guessing that is the reason why it returns immediately.
    – Abel Tom
    Apr 20 at 9:33







  • 1




    Actually in the meantime I have found the problem. After adding 'hpet=disable' to the Kernel paramters, everthing works as expected.
    – Bernd
    Apr 20 at 10:24











  • The hpet trick does not work for me... :-/
    – xtof54
    Aug 14 at 6:39















Have you tried mem instead of disk with -m switch? I am guessing hibernation is not possible on the machine since there is not enough swap mem, have you checked this? I am guessing that is the reason why it returns immediately.
– Abel Tom
Apr 20 at 9:33





Have you tried mem instead of disk with -m switch? I am guessing hibernation is not possible on the machine since there is not enough swap mem, have you checked this? I am guessing that is the reason why it returns immediately.
– Abel Tom
Apr 20 at 9:33





1




1




Actually in the meantime I have found the problem. After adding 'hpet=disable' to the Kernel paramters, everthing works as expected.
– Bernd
Apr 20 at 10:24





Actually in the meantime I have found the problem. After adding 'hpet=disable' to the Kernel paramters, everthing works as expected.
– Bernd
Apr 20 at 10:24













The hpet trick does not work for me... :-/
– xtof54
Aug 14 at 6:39




The hpet trick does not work for me... :-/
– xtof54
Aug 14 at 6:39















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