Okay, so I enabled ALSA debugging, as well as debug detect: CONFIG_SND_DEBUG and CONFIG_SND_DEBUG_DETECT. Here's the /var/messages tail produced by trying to start Jack: Jun 20 14:00:26 localhost kernel: [17179738.108000] azx_pcm_prepare: bufsize=0x1000, fragsize=0x800, format=0x11 Jun 20 14:00:26 localhost kernel: [17179738.108000] hda_codec_setup_stream: NID=0x3, stream=0x1, channel=0, format=0x11 Jun 20 14:00:27 localhost kernel: [17179738.116000] azx_pcm_prepare: bufsize=0x1000, fragsize=0x800, format=0x11 Jun 20 14:00:27 localhost kernel: [17179738.120000] hda_codec_setup_stream: NID=0x2, stream=0x5, channel=0, format=0x11 Jun 20 14:00:27 localhost kernel: [17179738.156000] azx_pcm_prepare: bufsize=0x1000, fragsize=0x800, format=0x11 Jun 20 14:00:27 localhost kernel: [17179738.156000] hda_codec_setup_stream: NID=0x3, stream=0x1, channel=0, format=0x11 Jun 20 14:00:27 localhost kernel: [17179738.164000] azx_pcm_prepare: bufsize=0x1000, fragsize=0x800, format=0x11 Jun 20 14:00:27 localhost kernel: [17179738.164000] hda_codec_setup_stream: NID=0x2, stream=0x5, channel=0, format=0x11 Jun 20 14:00:27 localhost kernel: [17179738.196000] azx_pcm_prepare: bufsize=0x1000, fragsize=0x800, format=0x11 Jun 20 14:00:27 localhost kernel: [17179738.196000] hda_codec_setup_stream: NID=0x3, stream=0x1, channel=0, format=0x11 Jun 20 14:00:27 localhost kernel: [17179738.204000] azx_pcm_prepare: bufsize=0x1000, fragsize=0x800, format=0x11 Jun 20 14:00:27 localhost kernel: [17179738.204000] hda_codec_setup_stream: NID=0x2, stream=0x5, channel=0, format=0x11 Jun 20 14:00:27 localhost kernel: [17179738.244000] azx_pcm_prepare: bufsize=0x1000, fragsize=0x800, format=0x11 Jun 20 14:00:27 localhost kernel: [17179738.244000] hda_codec_setup_stream: NID=0x3, stream=0x1, channel=0, format=0x11 Jun 20 14:00:27 localhost kernel: [17179738.252000] azx_pcm_prepare: bufsize=0x1000, fragsize=0x800, format=0x11 Jun 20 14:00:27 localhost kernel: [17179738.252000] hda_codec_setup_stream: NID=0x2, stream=0x5, channel=0, format=0x11 Jun 20 14:00:27 localhost kernel: [17179738.292000] azx_pcm_prepare: bufsize=0x1000, fragsize=0x800, format=0x11 Jun 20 14:00:27 localhost kernel: [17179738.292000] hda_codec_setup_stream: NID=0x3, stream=0x1, channel=0, format=0x11 Jun 20 14:00:27 localhost kernel: [17179738.300000] azx_pcm_prepare: bufsize=0x1000, fragsize=0x800, format=0x11 Jun 20 14:00:27 localhost kernel: [17179738.300000] hda_codec_setup_stream: NID=0x2, stream=0x5, channel=0, format=0x11 Jun 20 14:00:27 localhost kernel: [17179738.340000] azx_pcm_prepare: bufsize=0x1000, fragsize=0x800, format=0x11 Jun 20 14:00:27 localhost kernel: [17179738.340000] hda_codec_setup_stream: NID=0x3, stream=0x1, channel=0, format=0x11 Jun 20 14:00:27 localhost kernel: [17179738.348000] azx_pcm_prepare: bufsize=0x1000, fragsize=0x800, format=0x11 Jun 20 14:00:27 localhost kernel: [17179738.348000] hda_codec_setup_stream: NID=0x2, stream=0x5, channel=0, format=0x11 *snip* Jun 20 14:00:32 localhost kernel: [17179743.156000] azx_pcm_prepare: bufsize=0x1000, fragsize=0x800, format=0x11 Jun 20 14:00:32 localhost kernel: [17179743.156000] hda_codec_setup_stream: NID=0x3, stream=0x1, channel=0, format=0x11 Jun 20 14:00:32 localhost kernel: [17179743.164000] azx_pcm_prepare: bufsize=0x1000, fragsize=0x800, format=0x11 Jun 20 14:00:32 localhost kernel: [17179743.164000] hda_codec_setup_stream: NID=0x2, stream=0x5, channel=0, format=0x11 Jun 20 14:00:32 localhost kernel: [17179743.180000] hda_codec_setup_stream: NID=0x2, stream=0x0, channel=0, format=0x0 Jun 20 14:00:32 localhost kernel: [17179743.188000] hda_codec_setup_stream: NID=0x3, stream=0x0, channel=0, format=0x0 I can't make heads or tails of that; hopefully it means something to you. I'll try compiling the RT vanilla kernel now and see if that shows anything.. Thanks for the help. On 6/18/06, Lee Revell <rlrevell@xxxxxxxxxxx> wrote:
On Sun, 2006-06-18 at 14:38 -0400, I. E. Smith-Heisters wrote: > > > > > > Strange, Intel is no nice with OSS video drivers.. > > > > > > > I don't think the video driver has anything at all to do with this. > > Oh, no, I was referring, rather, to their OSS support of their 950 > video chipset; I would think their linux-friendliness would extend to > their audio chipsets. > Intel is fine. They wrote and released a perfectly good HDA driver. It's just that the vendors have a LOT of latitude to make small variations on the chipset and they don't help with ALSA drivers. It seems to work for many users but there are a lot of laptops that just get no sound or bad sound. > > > > Can you post the output of "dmesg" after trying JACK in realtime mode? > > > > Nothing in there. The following is exactly the same as it was before > trying to start jack. > > [17179691.824000] ACPI: Video Device [VID] (multi-head: yes rom: no post: no) > [17179691.824000] ACPI: Video Device [VID2] (multi-head: yes rom: no post: no) > [17179695.124000] ppdev: user-space parallel port driver > [17179695.352000] apm: BIOS not found. > [17179698.448000] Bluetooth: L2CAP ver 2.8 > [17179698.448000] Bluetooth: L2CAP socket layer initialized > [17179698.452000] Bluetooth: RFCOMM socket layer initialized > [17179698.452000] Bluetooth: RFCOMM TTY layer initialized > [17179698.452000] Bluetooth: RFCOMM ver 1.7 > > I tried compiling the RT kernel (just running the default Ubuntu > PREEMPT right now), but ran into some problems, so I'll have to play > with it some more. Maybe you could recompile the standard Ubuntu kernel and enable ALSA debugging? Lee
