On Friday 07 May 2010, Stefan Lucke wrote:
> Hi,
>
> I need some help with passing audio via HDMI.
>
> When my monitor (LG M2362D) is connected via RGB and analog audio, sound seems to OK.
>
> time aplay -D default -v -v summkl-18.wav
> ..
> real 1m5.222s
> user 0m1.522s
> sys 0m0.299s
>
> with kernel A and
> time aplay -D hw:1,3 -v -v summkl-18.wav
> ..
> thereis no sound and execution time is
> real 0m10.518s
> user 0m0.024s
> sys 0m0.056s
>
>
> Duration with kernel B and above command is about 95 minutes.
>
> Hopefully some can help me with sounf over hdmi.
>
> motherboard: asus M4A78 PRO
> kernel A: 2.6.32.7
> kernel B: 2.6.33
Now with alsa driver from daily snapshot 20100508, which plays as slow as
kernel B from above, I get a message regarding DMA/IRQ issues:
[ 1886.789461] ALSA pcm_lib.c:1745: playback write error (DMA or IRQ trouble?)
[ 1897.792865] ALSA pcm_lib.c:1745: playback write error (DMA or IRQ trouble?)
Don't know if irq19 / irq26 is envolved:
[ 12.273055] HDA Intel 0000:01:05.1: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[ 12.273088] HDA Intel 0000:01:05.1: irq 26 for MSI/MSI-X
[ 12.273107] HDA Intel 0000:01:05.1: setting latency timer to 64
from /cat/proc/interrupts:
CPU0 CPU1
0: 3611 560316 IO-APIC-edge timer
1: 15 857 IO-APIC-edge i8042
4: 0 2 IO-APIC-edge
8: 98 3002 IO-APIC-edge rtc0
9: 0 0 IO-APIC-fasteoi acpi
12: 2772 113660 IO-APIC-edge i8042
14: 94 2598 IO-APIC-edge ide0
15: 0 0 IO-APIC-edge ide1
16: 4 2199 IO-APIC-fasteoi ohci_hcd:usb3, ohci_hcd:usb4, hda_intel
17: 1151 169035 IO-APIC-fasteoi ehci_hcd:usb1
18: 0 3 IO-APIC-fasteoi ohci_hcd:usb5, ohci_hcd:usb6, ohci_hcd:usb7, radeon@pci:0000:01:05.0
19: 0 0 IO-APIC-fasteoi ehci_hcd:usb2
21: 1 105 IO-APIC-fasteoi saa7146 (0)
22: 558 23615 IO-APIC-fasteoi ahci, ohci1394
24: 563665 0 HPET_MSI-edge hpet2
26: 0 0 PCI-MSI-edge hda_intel
27: 677 47104 PCI-MSI-edge eth0
NMI: 0 0 Non-maskable interrupts
LOC: 237 3564 Local timer interrupts
SPU: 0 0 Spurious interrupts
PMI: 0 0 Performance monitoring interrupts
PND: 0 0 Performance pending work
RES: 299230 364703 Rescheduling interrupts
CAL: 16 287 Function call interrupts
TLB: 1220 2047 TLB shootdowns
TRM: 0 0 Thermal event interrupts
THR: 0 0 Threshold APIC interrupts
MCE: 0 0 Machine check exceptions
MCP: 8 8 Machine check polls
ERR: 2
MIS: 0
Still no sound via HDMI.
--
Stefan Lucke
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