user@user-SATELLITE-C50-A-19U:~$ dmesg | grep "irq 16"
[ 1.186965] ehci-pci 0000:00:1a.0: irq 16, io mem 0xc2519000
[ 1.809619] irq 16: nobody cared (try booting with the "irqpoll" option)
[ 15.987803] irq 16: nobody cared (try booting with the "irqpoll" option)
user@user-SATELLITE-C50-A-19U:~$ cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
0: 19 0 0 0 IO-APIC-edge timer
1: 61 605 47 44 IO-APIC-edge i8042
8: 0 0 0 1 IO-APIC-edge rtc0
9: 7 4 0 1 IO-APIC-fasteoi acpi
12: 9298 81100 7011 6376 IO-APIC-edge i8042
16: 49608 60802 1744 103372 IO-APIC-fasteoi ehci_hcd:usb1, mei_me, i915
17: 2435 11281 20 17 IO-APIC-fasteoi ath9k
18: 0 0 0 0 IO-APIC-fasteoi eth0
19: 1319 9094 3064 9995 IO-APIC-fasteoi ahci
21: 0 0 0 0 IO-APIC-fasteoi
22: 457 29 143 100 IO-APIC-fasteoi snd_hda_intel
23: 0 30 1 2 IO-APIC-fasteoi ehci_hcd:usb2
NMI: 4 2 2 2 Non-maskable interrupts
LOC: 46539 44570 45872 33317 Local timer interrupts
SPU: 0 0 0 0 Spurious interrupts
PMI: 4 2 2 2 Performance monitoring interrupts
IWI: 2189 1644 2108 1150 IRQ work interrupts
RTR: 1 0 0 0 APIC ICR read retries
RES: 8055 8107 7872 11432 Rescheduling interrupts
CAL: 512 378 433 474 Function call interrupts
TLB: 4056 4227 4293 3014 TLB shootdowns
TRM: 0 0 0 0 Thermal event interrupts
THR: 0 0 0 0 Threshold APIC interrupts
MCE: 0 0 0 0 Machine check exceptions
MCP: 4 4 4 4 Machine check polls
ERR: 0
MIS: 0
user@user-SATELLITE-C50-A-19U:~$