Bug 5396

Created attachment 6258 [details]
dmesg, lspci, find /proc

I have an nc6220, exhibiting the same problem on (attempted) reboot.
X86_REBOOTFIXUPS=Y does not help either.

Apologies for not including this in my previous report, but I'm seeing the
problem on 2.6.14-rc4

try acpi=off to see if reboot works?

The same problem on my Compaq nx8220, see also the bug 5221. Now, with the
2.6.14-rc4 kernel:
acpi=off:    does NOT reboot, hangs with the blank black screen after
"Rebooting." line appears (i don't see any line, even "Restarting system.\n.",
after this "Rebooting.").
acpi=noirg:  does NOT reboot, hangs after "Restarting system.\n."
pci=noacpi:  does NOT reboot, hangs after "Restarting system.\n."
pnpacpi=off: does NOT reboot, hangs after "Restarting system.\n."
Note: The kernel is patched with the patch from
https://bugzilla.novell.com/show_bug.cgi?id=116763 . The kernel DOES NOT BOOT on
my laptop without this patch applied.

Could you please try the patch at http://lkml.org/lkml/2005/8/23/16?
Also does reboot ever work in the system before?

Also, could please try different reboot options?
Such as reboot=c,b or w,b?

mach_reboot.h patch appears to be in 2.6.14-rc4, which I am running on my nc6220
that still has reboot problem

both reboot=c,b and w,b work for me. The system (2.6.14-rc4 with the ACPI patch
pavel mentions) now boots and reboots successfully.

Thanks for the suggestion.

So the system needs to jump to BIOS for BIOS. We can add a quirk to make the 
it automically (doesn't need boot option anymore) for your system.
Did reboot ever work in the system before?

previous kernel I tried, 2.6.12.6, worked fine wrt reboot and all other ACPI issues.

Shaohua - perhaps this machine would work better if it
were using the FADT reset_register instead of the
keyboard controller -- can you build a test patch to try that?

just wondering when the mentioned patch will be available (or if an alternate
patch is in the kernel already)?

The patch Len mentioned just adds a new boot option just like reboot=c,b and 
w,b. So you still need boot option, it can't make your system automically work.

One another option is blacklist your laptop, let it always enter bios for 
reboot. This way you don't need boot option.

On Tue, Jan 17, 2006 at 07:05:56PM -0800, bugme-daemon@bugzilla.kernel.org wrote:
> ------- Additional Comments From shaohua.li@intel.com  2006-01-17 18:54
> -------
> The patch Len mentioned just adds a new boot option just like reboot=c,b and 
> w,b. So you still need boot option, it can't make your system automically
> work.
> 
> One another option is blacklist your laptop, let it always enter bios for 
> reboot. This way you don't need boot option.
I'm happy with either option; unless there are other reports of it being
an issue perhaps blacklisting it is too much effort.

Thanks

Windows didn't get confused by this laptop, so Linux shouldn't either.
It should reset/reboot without any manual workaround.

We need to see if the FADT reset scheme works on this laptop.
If it does, then perhaps we need to look into using that reset
scheme as default for all systems.

Could you please check if 2.6.16 resolved problem?

Please reopen is patch at Bug 6655 cannot help.

*** This bug has been marked as a duplicate of 6655 ***

(Sorry about the lateness of my reply) I can confirm that a 2.6.18-rc5 kernel
reboots fine without any reboot flags on my nc6220.