On Monday 10 May 2010, Paul Menzel wrote:
> Am Sonntag, den 09.05.2010, 10:24 +0200 schrieb Stefan Lucke:
> > On Friday 07 May 2010, Stefan Lucke wrote:
>
> > > 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
>
> I did not get this. Is it working with Linux kernel A? Did you make
> sure, that the HDMI cable is working.
Cable is and monitor is ok as I get sound from my popcornhour.
HDMI playback with kernel A (2.6.32.7) is 6 times fast (10.5 sec, not audible)
than analog playback (65 sec audible).
enable_msi=0 turn fast running aplay into a slow one, but stil no sound.
>From /proc/interrupts with slow running aplay:
16: 23310 293608 IO-APIC-fasteoi ohci_hcd:usb3, ohci_hcd:usb4, hda_intel
17: 17996 1553666 IO-APIC-fasteoi ehci_hcd:usb1
18: 1 314 IO-APIC-fasteoi ohci_hcd:usb5, ohci_hcd:usb6, ohci_hcd:usb7, radeon
19: 0 0 IO-APIC-fasteoi ehci_hcd:usb2
21: 1 105 IO-APIC-fasteoi saa7146 (0)
22: 5693 62311 IO-APIC-fasteoi ahci, ohci1394
25: 0 0 PCI-MSI-edge hda_intel
26: 7520 124542 PCI-MSI-edge eth0
>From /proc/interrupts with fast running aplay:
16: 23470 303478 IO-APIC-fasteoi ohci_hcd:usb3, ohci_hcd:usb4, hda_intel
17: 18280 1582252 IO-APIC-fasteoi ehci_hcd:usb1
18: 1 314 IO-APIC-fasteoi ohci_hcd:usb5, ohci_hcd:usb6, ohci_hcd:usb7, radeon
19: 84 640 IO-APIC-fasteoi ehci_hcd:usb2, hda_intel
21: 1 105 IO-APIC-fasteoi saa7146 (0)
22: 5802 63430 IO-APIC-fasteoi ahci, ohci1394
26: 7629 125377 PCI-MSI-edge eth0
Thats now with kernel 2.6.33.3 and alsa driver from 20100508.
With this kernel "fast running" aplay is quite near expected duration
65.222 * 44100 / 48000 = 59.9227
stefan@jarada /data/cd_data/Summ $ time aplay -D hw:1,3 -v -v summkl-18.wav
Playing WAVE 'summkl-18.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
Warning: rate is not accurate (requested = 44100Hz, got = 48000Hz)
please, try the plug plugin
Hardware PCM card 1 'HDA ATI HDMI' device 3 subdevice 0
Its setup is:
stream : PLAYBACK
access : RW_INTERLEAVED
format : S16_LE
subformat : STD
channels : 2
rate : 48000
exact rate : 48000 (48000/1)
msbits : 16
buffer_size : 16384
period_size : 4096
period_time : 85333
tstamp_mode : NONE
period_step : 1
avail_min : 4096
period_event : 0
start_threshold : 16384
stop_threshold : 16384
silence_threshold: 0
silence_size : 0
boundary : 1073741824
appl_ptr : 0
hw_ptr : 0
real 0m59.835s
user 0m0.047s
sys 0m0.054s
>
> > > 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?)
>
> Did you find something on the Web what could cause this.
No.
..
>
> Please do not compress the `alsa-info.sh` output. Just paste it into the
> message or attach as plain text.
>
> Anyway, did you try different module options [1]?
..
> [1] http://alsa-project.org/main/index.php/Help_To_Debug_Intel_HDA
>
Thanks, good link,
Stefan Lucke
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