# dmesg -n 8 -c > /dev/null # rmmod ath9k # dmesg -c ath9k 0000:0c:00.0: PCI INT A disabled ath9k: Driver unloaded # cat /proc/interrupts CPU0 CPU1 0: 5465 5349 IO-APIC-edge timer 1: 177 213 IO-APIC-edge i8042 8: 81 80 IO-APIC-edge rtc0 9: 47 44 IO-APIC-fasteoi acpi 12: 63 69 IO-APIC-edge i8042 14: 0 0 IO-APIC-edge ata_piix 15: 0 0 IO-APIC-edge ata_piix 16: 4 5 IO-APIC-fasteoi yenta, mmc0, ohci1394, ath 21: 156 157 IO-APIC-fasteoi HDA Intel 22: 13 11 IO-APIC-fasteoi uhci_hcd:usb3, uhci_hcd:usb4, uhci_hcd:usb5, uhci_hcd:usb6, uhci_hcd:usb7 23: 1 1 IO-APIC-fasteoi ehci_hcd:usb1, ehci_hcd:usb2 26: 4297 4359 PCI-MSI-edge ahci 27: 1 0 PCI-MSI-edge eth0 28: 319 276 PCI-MSI-edge i915@pci:0000:00:02.0 NMI: 0 0 Non-maskable interrupts LOC: 6157 6498 Local timer interrupts RES: 4090 4064 Rescheduling interrupts CAL: 55 81 Function call interrupts TLB: 72 83 TLB shootdowns TRM: 0 0 Thermal event interrupts THR: 0 0 Threshold APIC interrupts SPU: 0 0 Spurious interrupts ERR: 0 MIS: 0 # modprobe ath9k # dmesg -c ath9k: 0.1 ath9k 0000:0c:00.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18 ath9k 0000:0c:00.0: setting latency timer to 64 wmaster0 (ath9k): not using net_device_ops yet phy2: Selected rate control algorithm 'ath9k_rate_control' wlan0 (ath9k): not using net_device_ops yet Registered led device: ath9k-phy2:radio Registered led device: ath9k-phy2:assoc Registered led device: ath9k-phy2:tx Registered led device: ath9k-phy2:rx phy2: Atheros AR5418 MAC/BB Rev:2 AR5133 RF Rev:81: mem=0xffffc200043e0000, irq=18 # cat /proc/interrupts CPU0 CPU1 0: 6030 5896 IO-APIC-edge timer 1: 205 259 IO-APIC-edge i8042 8: 81 80 IO-APIC-edge rtc0 9: 47 44 IO-APIC-fasteoi acpi 12: 63 69 IO-APIC-edge i8042 14: 0 0 IO-APIC-edge ata_piix 15: 0 0 IO-APIC-edge ata_piix 16: 4 5 IO-APIC-fasteoi yenta, mmc0, ohci1394, ath 18: 0 0 IO-APIC-fasteoi ath 21: 156 157 IO-APIC-fasteoi HDA Intel 22: 13 11 IO-APIC-fasteoi uhci_hcd:usb3, uhci_hcd:usb4, uhci_hcd:usb5, uhci_hcd:usb6, uhci_hcd:usb7 23: 1 1 IO-APIC-fasteoi ehci_hcd:usb1, ehci_hcd:usb2 26: 4306 4368 PCI-MSI-edge ahci 27: 1 0 PCI-MSI-edge eth0 28: 320 277 PCI-MSI-edge i915@pci:0000:00:02.0 NMI: 0 0 Non-maskable interrupts LOC: 6538 6859 Local timer interrupts RES: 4201 4204 Rescheduling interrupts CAL: 59 82 Function call interrupts TLB: 72 83 TLB shootdowns TRM: 0 0 Thermal event interrupts THR: 0 0 Threshold APIC interrupts SPU: 0 0 Spurious interrupts ERR: 0 MIS: 0 # ip link set wlan0 up # dmesg -c ADDRCONF(NETDEV_UP): wlan0: link is not ready # cat /proc/interrupts CPU0 CPU1 0: 7111 6952 IO-APIC-edge timer 1: 232 287 IO-APIC-edge i8042 8: 115 111 IO-APIC-edge rtc0 9: 47 44 IO-APIC-fasteoi acpi 12: 1273 1307 IO-APIC-edge i8042 14: 0 0 IO-APIC-edge ata_piix 15: 0 0 IO-APIC-edge ata_piix 16: 4 5 IO-APIC-fasteoi yenta, mmc0, ohci1394, ath 18: 0 0 IO-APIC-fasteoi ath 21: 156 157 IO-APIC-fasteoi HDA Intel 22: 13 11 IO-APIC-fasteoi uhci_hcd:usb3, uhci_hcd:usb4, uhci_hcd:usb5, uhci_hcd:usb6, uhci_hcd:usb7 23: 1 1 IO-APIC-fasteoi ehci_hcd:usb1, ehci_hcd:usb2 26: 4420 4481 PCI-MSI-edge ahci 27: 1 0 PCI-MSI-edge eth0 28: 336 293 PCI-MSI-edge i915@pci:0000:00:02.0 NMI: 0 0 Non-maskable interrupts LOC: 7389 7727 Local timer interrupts RES: 4610 4599 Rescheduling interrupts CAL: 65 82 Function call interrupts TLB: 72 83 TLB shootdowns TRM: 0 0 Thermal event interrupts THR: 0 0 Threshold APIC interrupts SPU: 0 0 Spurious interrupts ERR: 0 MIS: 0 # iwlist wlan0 scan wlan0 No scan results # dmesg -c # cat /proc/interrupts CPU0 CPU1 0: 8095 7944 IO-APIC-edge timer 1: 261 314 IO-APIC-edge i8042 8: 115 111 IO-APIC-edge rtc0 9: 47 44 IO-APIC-fasteoi acpi 12: 2098 2138 IO-APIC-edge i8042 14: 0 0 IO-APIC-edge ata_piix 15: 0 0 IO-APIC-edge ata_piix 16: 4 5 IO-APIC-fasteoi yenta, mmc0, ohci1394, ath 18: 13 13 IO-APIC-fasteoi ath 21: 156 157 IO-APIC-fasteoi HDA Intel 22: 13 11 IO-APIC-fasteoi uhci_hcd:usb3, uhci_hcd:usb4, uhci_hcd:usb5, uhci_hcd:usb6, uhci_hcd:usb7 23: 1 1 IO-APIC-fasteoi ehci_hcd:usb1, ehci_hcd:usb2 26: 4452 4502 PCI-MSI-edge ahci 27: 1 0 PCI-MSI-edge eth0 28: 358 316 PCI-MSI-edge i915@pci:0000:00:02.0 NMI: 0 0 Non-maskable interrupts LOC: 8008 8351 Local timer interrupts RES: 4927 4862 Rescheduling interrupts CAL: 71 82 Function call interrupts TLB: 72 83 TLB shootdowns TRM: 0 0 Thermal event interrupts THR: 0 0 Threshold APIC interrupts SPU: 0 0 Spurious interrupts ERR: 0 MIS: 0 # iwlist wlan0 scan wlan0 No scan results # dmesg -c # cat /proc/interrupts CPU0 CPU1 0: 8538 8382 IO-APIC-edge timer 1: 280 337 IO-APIC-edge i8042 8: 115 111 IO-APIC-edge rtc0 9: 47 44 IO-APIC-fasteoi acpi 12: 2098 2138 IO-APIC-edge i8042 14: 0 0 IO-APIC-edge ata_piix 15: 0 0 IO-APIC-edge ata_piix 16: 4 5 IO-APIC-fasteoi yenta, mmc0, ohci1394, ath 18: 27 25 IO-APIC-fasteoi ath 21: 156 157 IO-APIC-fasteoi HDA Intel 22: 13 11 IO-APIC-fasteoi uhci_hcd:usb3, uhci_hcd:usb4, uhci_hcd:usb5, uhci_hcd:usb6, uhci_hcd:usb7 23: 1 1 IO-APIC-fasteoi ehci_hcd:usb1, ehci_hcd:usb2 26: 4456 4508 PCI-MSI-edge ahci 27: 1 0 PCI-MSI-edge eth0 28: 364 322 PCI-MSI-edge i915@pci:0000:00:02.0 NMI: 0 0 Non-maskable interrupts LOC: 8315 8595 Local timer interrupts RES: 4975 4929 Rescheduling interrupts CAL: 71 82 Function call interrupts TLB: 72 83 TLB shootdowns TRM: 0 0 Thermal event interrupts THR: 0 0 Threshold APIC interrupts SPU: 0 0 Spurious interrupts ERR: 0 MIS: 0