Disabling IRQ #11
Bill Shannon
bill.shannon at sun.com
Sat Sep 18 20:14:48 UTC 2004
James Wilkinson wrote:
>>From linux/Documentation/kernel-parameters.txt:
> nousb [USB] Disable the USB subsystem
> noacpi [IA-32] Do not use ACPI for IRQ routing
> or for PCI scanning.
>
> acpi= [HW,ACPI] Advanced Configuration and Power Interface
> Format: { force | off | ht | strict }
> force -- enable ACPI if default was off
> off -- disable ACPI if default was on
> noirq -- do not use ACPI for IRQ routing
> ht -- run only enough ACPI to enable Hyper Threading
> strict -- Be less tolerant of platforms that are not
> strictly ACPI specification compliant.
>
> See also Documentation/pm.txt, pci=noacpi
I tried:
kernel /vmlinuz-2.6.8-1.521 ro root=LABEL=/ hdd=ide-scsi acpi=off pci=noacpi noapic
I don't know what ACPI and APIC are, or what the difference is between them,
and I wasn't sure which people were recommending, so I tried both.
It made no difference.
> It might also be worth temporarily disabling both sound and networking:
> try commenting out the appropriate lines in /etc/modprobe.conf or
> setting alias sound off.
I disabled sound in the BIOS. Made no difference.
I disabled ethernet in the BIOS. The system hung coming up when it
tried to start sendmail.
Just a reminder, I can reproduce this easily as follows...
I try to login through the GUI login screen to a test account that has
no special dot files. The login hangs after putting up the "metacity"
icon. I login from another machine using ssh and kill gnome-session.
That kills the hung login but also immediately displays the "Disabling
IRQ #11" message in my ssh window. The GUI login screen continues to
function and I can use it to reboot the system.
Disabling acpi and turning off all sorts of things related to IRQ #11
doesn't seem to make any difference.
Is it time to report a bug?
> It might *also* be worth playing with kernel.org kernels.
I'll wait for Fedora Core 3 before wasting time doing that.
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