[alsa-devel] No jack sense on Intel 82801I / IDT 92HD71B7X in a HP dv4

[Takashi Iwai]

At Thu, 11 Jun 2009 14:57:52 -0300,
Gustavo Vieira wrote:
> 
> 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      eth0
> NMI:          0          0   Non-maskable interrupts
> LOC:      46690      47341   Local timer interrupts
> RES:      14957      15044   Rescheduling interrupts
> CAL:         73         64   Function call interrupts
> TLB:        193        119   TLB shootdowns
> TRM:          0          0   Thermal event interrupts
> THR:          0          0   Threshold APIC interrupts
> SPU:          0          0   Spurious interrupts
> ERR:          0
> MIS:          0
> 
> Interrupt 22 stays always with 0. Even when correctly playing sounds. I
> tested this on another machine with HD-Audio, and the equivalent
> interrupt 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?

That's weird.

Did you try enable_msi=1 module option, BTW?


Takashi