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ddaygold

Member

From: NYC

Registered: 2015-08-18

Posts: 4

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Enabling nmi_watchdog on an Acer C720

My chromebook has been serving me well for the past year, with one exception: sometimes it hardlocks.

I'd like to enable nmi_watchdog to force panics when the system hangs. However, I can't seem to get it enabled.

I found the kernel documentation for the parameter: in

/lib/modules/4.1.5-1-ARCH/build/Documentation/kernel-parameters.txt

Snipping the relevant part:

 nmi_watchdog=   [KNL,BUGS=X86] Debugging features for SMP kernels
                        Format: [panic,][nopanic,][num]
                        Valid num: 0 or 1
                        0 - turn nmi_watchdog off
                        1 - turn nmi_watchdog on
                        When panic is specified, panic when an NMI watchdog
                        timeout occurs (or 'nopanic' to override the opposite
                        default).
                        This is useful when you use a panic=... timeout and
                        need the box quickly up again.

Therefore, I have my

/proc/cmdline

set up like this:

BOOT_IMAGE=/boot/vmlinuz-linux root=UUID=241d1671-4529-450b-a3e8-ac086b3fe1e6 rw add_efi_memmap tpm_tis.interrupts=0 modprobe.blacklist=ehci_pci nmi_watchdog=panic,1 panic=-1

However,

/proc/interrupts

still shows 0 NMI interrupts

What am I missing?