Re: [Alsa-user] Tinycore and Haswell produce only chopped noise
(Oops. Forgot to copy the list.) Chris and list, Thank you for the advice to check /proc/asound/Intel. There's undoubtedly good stuff in there--if my magic decoder ring wasn't in the shop. :-) To be more clear, the scratchy, chopped white noise sound is all I had ever heard from aplay. It's not that it plays some modes but not others; it doesn't play properly with any mode. I reran some tests, based on your advice. Info interspersed below. Thanks, Robert Date: Fri, 29 Aug 2014 22:46:27 -0700 From: chris hermansen clherman...@gmail.com To: Robert M. Riches Jr. rm.ric...@jacob21819.net Cc: Alsa-user@lists.sourceforge.net Robert and list, On Aug 29, 2014 10:08 PM, Robert M. Riches Jr. rm.ric...@jacob21819.net wrote: Trying to get sound working on TinyCore 5, 64-bit kernel, 32-bit userspace with a Haswell i5-4690 CPU and an Asus H97M-Plus motherboard. My primary need is at least one channel of audio output from VLC. Kernel modules appear loaded. aplay -l and aplay -L show one card, ALC887-VD. Alsamixer appears to show an HDMI device with no controls and another device (ALC-887, I think) with controls. I unmuted and turned up the gain on master on that second device in order to get any sound output. Oh, and with aplay and a WAV file, I have to use plughw:1, because hw:1 refused to do single channel. What kind of WAV file is it? What happens if you try a stereo 16 bit 44.1 kHz WAV file? File A, the file I had originally tried, is Signed 16 bit Little Endian, Rate 48000 Hz, Mono. The first time I play a file with CD rates and such (file B), I hear silence, and toward the end of the file, I see this: aplay: pcm_write:1939: write error: Input/output error If I then play file A, I hear chopped pieces of file B. Then, if I play file B again, I hear chopped pieces of file A. It seems something in aplay or the driver is seriously confused. What happens if you use the default output device? That results in a segmentation fault, every time. Why can't you use a newer kernel? Kernel 3.8.13 is the latest available in the TinyCore repositories. To compile my own kernel for TinyCore would require setting up a build environment, configuring the newer kernel, etc. That would take much too much time--probably at least a few evenings. A Sept. 14 hard deadline looms to have a full VLC plus monitoring appliance. A newer kernel would guarantee a missed deadline. A couple of soundcards are cheaper. After sending this, I'm heading to Frys. If it works with stereo and you need a mono signal out, can you fabricate a different cable? With aplay on a WAV file, I get scratchy sounds (similar to pulsed white noise or someone scratching fingernails on a microphone screen) out of the headphone jack. It would be interesting to look at /proc/asound/Intel files while playing something that sounds scratchy. I have had scratchy sounds in the past when the driver didn't properly deal with the bit rate and depth. /proc/asound/Intel is a symlink to /proc/asound/card1. I'll snip the original details and append the output of something similar to this: head -9 `find /proc/asound/card1 -type f` Also any related messages in the /var/log/syslog file? Starting syslogd created /var/log/messages but not /var/log/syslog. Nothing showed up in /var/log/messages for attempts with 'aplay -D plughw:1 ...'. The only things that ever showed up there were segmentation faults from trying to use the default device. This is the tail of dmesg output. The line at 16.931012 is probably irrelevant. Nothing earlier in dmesg output appeared to be relevant to ALSA. [8.675200] input: HDA Intel Line as /devices/pci:00/:00:1b.0/sound/card1/input6 [8.675334] input: HDA Intel Rear Mic as /devices/pci:00/:00:1b.0/sound/card1/input7 [8.675450] input: HDA Intel Front Mic as /devices/pci:00/:00:1b.0/sound/card1/input8 [8.675557] input: HDA Intel Front Headphone as /devices/pci:00/:00:1b.0/sound/card1/input9 [8.675667] input: HDA Intel Line Out Side as /devices/pci:00/:00:1b.0/sound/card1/input10 [8.675803] input: HDA Intel Line Out CLFE as /devices/pci:00/:00:1b.0/sound/card1/input11 [8.675901] input: HDA Intel Line Out Surround as /devices/pci:00/:00:1b.0/sound/card1/input12 [8.676067] input: HDA Intel Line Out Front as /devices/pci:00/:00:1b.0/sound/card1/input13 [ 16.931012] mtrr: no MTRR for e000,3ff found [ 248.663732] aplay[1073]: segfault at 8 ip f777302d sp ffe8f914 error 4 in libasound.so.2.0.0[f7704000+a1000] [ 361.240347] aplay[1258]: segfault at 8 ip f76d002d sp fff91f54 error 4 in libasound.so.2.0.0[f7661000+a1000] [ 363.685898] aplay[1262]: segfault at 8 ip f778d02d sp ffd27364 error 4 in libasound.so.2.0.0[f771e000+a1000] Googling didn't find anything that appeared relevant. Where could I find
Re: [Alsa-user] Tinycore and Haswell produce only chopped noise
Robert and list, On Aug 29, 2014 10:08 PM, Robert M. Riches Jr. rm.ric...@jacob21819.net wrote: Trying to get sound working on TinyCore 5, 64-bit kernel, 32-bit userspace with a Haswell i5-4690 CPU and an Asus H97M-Plus motherboard. My primary need is at least one channel of audio output from VLC. Kernel modules appear loaded. aplay -l and aplay -L show one card, ALC887-VD. Alsamixer appears to show an HDMI device with no controls and another device (ALC-887, I think) with controls. I unmuted and turned up the gain on master on that second device in order to get any sound output. Oh, and with aplay and a WAV file, I have to use plughw:1, because hw:1 refused to do single channel. What kind of WAV file is it? What happens if you try a stereo 16 bit 44.1 kHz WAV file? What happens if you use the default output device? Why can't you use a newer kernel? If it works with stereo and you need a mono signal out, can you fabricate a different cable? With aplay on a WAV file, I get scratchy sounds (similar to pulsed white noise or someone scratching fingernails on a microphone screen) out of the headphone jack. It would be interesting to look at /proc/asound/Intel files while playing something that sounds scratchy. I have had scratchy sounds in the past when the driver didn't properly deal with the bit rate and depth. Also any related messages in the /var/log/syslog file? Googling didn't find anything that appeared relevant. Where could I find whether that kernel (3.8.13) supports Haswell HDMI audio and/or the H97M's audio? What about just trying a newer kernel? Any pointers to tricks to maybe get the existing sound devices working? Buying another sound card is acceptable if necessary. Any suggestions for something US$50 that is old enough that is sure to work with the 3.8.13 kernel? It will be feeding a church PA system but studio-quality sound is not necessary. Thanks in advance, Robert Details: Output of uname -a: Linux box 3.8.13-tinycore64 #777 SMP Fri Oct 18 15:13:45 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux Output of aplay -l: List of PLAYBACK Hardware Devices card 1: Intel [HDA Intel], device 0: ALC887-VD Analog [ALC887-VD Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: Intel [HDA Intel], device 1: ALC887-VD Digital [ALC887-VD Digital] Subdevices: 1/1 Subdevice #0: subdevice #0 Output of aplay -L: null Discard all samples (playback) or generate zero samples (capture) pulse PulseAudio Sound Server default:CARD=Intel HDA Intel, ALC887-VD Analog Default Audio Device sysdefault:CARD=Intel HDA Intel, ALC887-VD Analog Default Audio Device front:CARD=Intel,DEV=0 HDA Intel, ALC887-VD Analog Front speakers surround40:CARD=Intel,DEV=0 HDA Intel, ALC887-VD Analog 4.0 Surround output to Front and Rear speakers surround41:CARD=Intel,DEV=0 HDA Intel, ALC887-VD Analog 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=Intel,DEV=0 HDA Intel, ALC887-VD Analog 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=Intel,DEV=0 HDA Intel, ALC887-VD Analog 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=Intel,DEV=0 HDA Intel, ALC887-VD Analog 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers iec958:CARD=Intel,DEV=0 HDA Intel, ALC887-VD Digital IEC958 (S/PDIF) Digital Audio Output Output of lsmod: Module Size Used byNot tainted snd_seq_dummy 12288 0 snd_seq_oss24576 0 snd_seq_midi_event 12288 1 snd_seq_oss snd_seq36864 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event snd_seq_device 12288 3 snd_seq_dummy,snd_seq_oss,snd_seq snd_pcm_oss36864 0 snd_mixer_oss 16384 1 snd_pcm_oss snd_hda_codec_realtek49152 1 snd_hda_codec_hdmi 28672 1 snd_hda_intel 28672 0 snd_hda_codec 65536 3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel snd_hwdep 12288 1 snd_hda_codec snd_pcm57344 4 snd_pcm_oss,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec snd_timer 20480 2 snd_seq,snd_pcm snd45056 12 snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_timer soundcore 12288 1 snd snd_page_alloc 12288 2 snd_hda_intel,snd_pcm cpufreq_conservative12288 0 cpufreq_userspace 12288 0 cpufreq_stats 12288 0 cpufreq_powersave 12288 0 squashfs 28672 0 loop 20480 0 ppdev 12288 0
