On 06/30/2012 04:49:26 PM, Mateusz Marzantowicz wrote: > On 30.06.2012 23:32, Aaron Konstam wrote: > > On Sat, 2012-06-30 at 08:36 -0700, Geoffrey Leach wrote: > >> On 06/30/2012 03:51:45 AM, Mateusz Marzantowicz wrote: > >>> On 29.06.2012 22:37, Geoffrey Leach wrote: > >>>> This problem has been submitted to Bugzilla (836657), but I > thought > >>> I'd > >>>> ask here to see if there are any fixes lurking. > >>>> > >>>> System is running 3.4.3-1.fc17.x86_64. When I systemctl poweroff > >>> the > >>> > >>>> kernel reboots instead of powering off. Under Windows 7, power > off > >>>> works as expected. All packages are up-to-date. > >>>> > >>>> Any ideas? > >>> What about shutdown -h ? Does it work as expected? Then try halt > and > >>> poweroff commands. > >> It's my understanding that poweroff is a backwards-compatibility > >> implementation of systemctl poweroff, which I have tried to no > avail. I > >> should have mentioned that. It appears that halt is the same. > shutdown > >> if a link to systemctl. Bottom line is that I would not expect any > of > >> these to be any different, but I live in hope and will report back > if > >> there's any difference. > >> > >> I should also mention that systemctl poweroff works fine on my > laptop > >> running the 32-bit version of Fedora 16. > >> > >> One point, FWIW. Power off is essential for my application. Merely > >> halt-ing is no better than just leaving the system running. > >> > >> Thanks. I don't wish to seem ungrateful -:) > >> > >> > > I disagree with the other posters. There is a magic related to > shutdown > > poweroff and halt. If you look at the man pages you will find that > > shutdown and poweroff have different options. It is clear that when > > systemctl is called under a different name it checks the name and > > potentially reacts differently. For example poweroff by itself will > > shutdown the machine . systemctl called by itself will not. > > If you check source code with is more reliable then any man page > could > ever be, you will find that there really is nothing magical. Please > see > file src/systemctl/systemctl.c in systemd source tree. Commands like > halt, shutdown and power off call the reboot() function. I can agree > that argument to reboot() may change between this calls but it's > still > the same function they're calling. "Read the source, Luke!" Thanks for the suggestion. I followed reboot () through the source and finally got lost in a maze of low-level calls. I did notice that POWEROFF is different from HALT, etc. and that there is code that is specific for 32-bit systems. Finally, it appears that at the bottom of the call tree there is a call to a BIOS function which is relevant, I imagine, although as I mentioned at the outset, Windows 7 does poweroff just fine. All of this is somewhat irrelevant, as it appears that the audio driver (smd_hda_intel) does not support the Ivy Bridge architecture, so powering off is not an issue :-( -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
