On 06/04/2019 01:01 AM, anax wrote: > You may try using this page: > > https://www.kernel.org/doc/Documentation/power/basic-pm-debugging.txt > > suomi > > On 03/06/2019 17.54, H wrote: >> I have a recent Dell Inspiron laptop on which I installed CentOS 7. I have, >> however, failed somewhere since I do not have a hibernate option when >> shutting down, only a suspend option. I believe I created the necessary >> hibernation partition large enough for the RAM the machine has, 16 Gb if I >> remember correctly. >> >> How do I identify where the problem lies? >> >> _______________________________________________ >> CentOS mailing list >> [email protected] >> https://lists.centos.org/mailman/listinfo/centos >> > _______________________________________________ > CentOS mailing list > [email protected] > https://lists.centos.org/mailman/listinfo/centos
Did not have a chance to try the first suggestion on that page until today: 1. Testing hibernation (aka suspend to disk or STD) To check if hibernation works, you can try to hibernate in the "reboot" mode: # echo reboot > /sys/power/disk # echo disk > /sys/power/state However, even though I am root, the system complains: -bash: echo: write error: Operation not permitted Any suggestion on how to find the cause of this message? _______________________________________________ CentOS mailing list [email protected] https://lists.centos.org/mailman/listinfo/centos
