On Thu, Mar 11, 2010 at 10:32 AM, Jaroslav Kysela perex@perex.cz wrote:
[pid 22651] ioctl(21, 0x80044121, 0xb439d2cc) = -1 EPIPE (Broken pipe) pcm_hw.c: snd_pcm_hw_delay() SNDRV_PCM_IOCTL_DELAY failed.
-EPIPE means underrun condition.
Try 'echo 101 > /proc/asound/card0/pcm0p/xrun_debug' and send dmesg output to check if the ring buffer pointer in the hda-intel driver does not return wrong values. Replace card0 and pcm0p with right identifiers (look to 'aplay -l' for right numbers).
More info: http://www.alsa-project.org/main/index.php/XRUN_Debug
Hi, thanks for your further reply. However, I don't see "CONFIG_SND_PCM_XRUN_DEBUG" anywhere in the kernel config (both in menuconfig or .config).
All these parameters should be set: CONFIG_SND_PCM_XRUN_DEBUG, CONFIG_SND_VERBOSE_PROCFS, CONFIG_SND_DEBUG . I updated wiki.
Ok, I have now compiled the alsa snapshot with the following:
./configure --with-cards=hda-intel --with-card-options=hda-hwdep,hda-reconfig,hda-codec-realtek,hda-codec-nvhdmi,hda-generic,pcm-xrun-debug --with-debug=verbose --enable-verbose-procfs --with-isapnp=no --with-sequencer=no --with-oss=no --with-pcm-oss-plugins=no
Attached are samples of my dmesg and /var/log/syslog files. Hopefully there is some useful information there?
Best regards, Derek