Em Sáb, 2009-06-06 às 11:04 +0200, Takashi Iwai escreveu:> > I'm not sure what interrupt I should be monitoring, but the line> with> > "HDA Intel" always stays with 0 interrupts. Also, only timer, i915> and> > rescheduling interrupts are generated.> > Hm, but when you play or record something, interrupts must be> generated, right?
No. Not at all. Here is the output of /proc/interrupts
CPU0 CPU1 0: 37864 38144 IO-APIC-edge timer 1: 5 511 IO-APIC-edge i8042 8: 7 9 IO-APIC-edge rtc0 9: 1048 652 IO-APIC-fasteoi acpi 12: 51 57 IO-APIC-edge i8042 16: 53 80 IO-APIC-fasteoi uhci_hcd:usb3, mmc0,jmb38x_ms:slot0 17: 0 0 IO-APIC-fasteoi uhci_hcd:usb4 18: 0 3 IO-APIC-fasteoi ehci_hcd:usb1,uhci_hcd:usb7 20: 30 2628 IO-APIC-fasteoi ehci_hcd:usb2,uhci_hcd:usb5 22: 0 0 IO-APIC-fasteoi uhci_hcd:usb6, HDA Intel 29: 13017 1545 PCI-MSI-edge ahci 30: 1 3502 PCI-MSI-edge i915 31: 0 2894 PCI-MSI-edge eth0NMI: 0 0 Non-maskable interruptsLOC: 46690 47341 Local timer interruptsRES: 14957 15044 Rescheduling interruptsCAL: 73 64 Function call interruptsTLB: 193 119 TLB shootdownsTRM: 0 0 Thermal event interruptsTHR: 0 0 Threshold APIC interruptsSPU: 0 0 Spurious interruptsERR: 0MIS: 0
Interrupt 22 stays always with 0. Even when correctly playing sounds. Itested this on another machine with HD-Audio, and the equivalentinterrupt increased when playing. Also, in this other system interrupt 0(timer) is hardly issued, but in this laptop it is firing all the time.
How can the driver be working without interrupts?
Abraços,Gustavo
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