On 20/12/11 11:01, gooss...@rsc.anu.edu.au wrote: > I hope I am sending to the right place. I really have no idea how to deal > with this. I'll have to describe the problem in detail, since I cannot > assign it to a package or anything. I have tried searching for a similar > problem but can't find one. I am not a complete newcomer, but I am not > much of an expert either. > > I have a i7 quad core 2600K, running current squeeze 6.0.3 with default > Gnome installation. > > 2.6.32-5-amd64 kernel, 8 GB ram. > > When I try to shutdown, reboot, logout, switch user or Ctrl-Alt-Fn to > switch tty the machine does a hard reset and reboots. > > It does not do this if I use sysv-rc-conf to turn off gdm, so that it > boots into a CLI instead of GUI. > > SO if I boot onto bare CLI, either runlevel 1 or runlevel 2 but with gdm > unchecked in sysv-rc-conf, I can work away, run applications, switch ttys, > use the network, etc, and then > > shutdown -h now > > or > > shutdown -r now > > and the machine shuts down gracefully. >
<snipped> > > Darren > > > gooss...@rsc.anu.edu.au > > I had the same symptoms in different scenarios. In each case it was caused by partially supported ACPI extensions in the BIOS - the DE would try a soft shutdown event not supported by the kernel. In which case the shutdown proceeds normally *except* for the last step which is poweroff (can't remember which S state that is). NOTE: Debian has it's idiosyncrasies - so another Distro might be less strict about ACPI support Firstly, if you haven't done already, check the BIOS settings and ensure PNP is enabled, and that the ACPI settings are sane. Then at the grub prompt:- edit the default entry (so the change is temporary) and append "acpi=force"[*1] *If* it manages to boot after that - open a shell and run:- $ dmesg | grep -i 'fail\|error\|warn\|not\|acpi\|conflict' Please post the output. Cheers [*1] assuming you're not running a custom kernel. If you installed the linux-source package for your kernel the supported kernel-parameters should be installed:- # locate kernel-parameters.txt or cut and paste:- $ cat /usr/src/linux-source-`uname -r | awk -F. '{ printf("%d.%d.%d\n",$1,$2,$3); }'`/Documentation/kernel-parameters.txt | more The basic "acpi=force | off | ht | strict | noirq | rsdt" should be supported by all kernels. The additional ones are useful for some tricky mbs. -- Iceweasel/Firefox extensions for finding answers to Debian questions:- https://addons.mozilla.org/en-US/firefox/collections/Scott_Ferguson/debian/ -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/4f012ead.90...@gmail.com