[alsa-devel] ALSA Driver 1.0.22.1
I just installed alsa-drivers 1.0.22.1 (the latest version to my understanding) on Ubuntu 9.10.
After that I started noticing conflicts between different sound-playback applications. For example, if I watch a Flash video on Firefox, stop it, and then start playing an MP3 file on Totem (a Media Player), I don't hear any sound. Once I close Firefox the music from Totem starts coming out. This never happened before on my Linux system. I'd be very grateful if someone could give me advices!
My /var/log/syslog shows the following whenever this happens:
Feb 7 02:42:36 darsen-laptop pulseaudio[1789]: alsa-sink.c: Error opening PCM device front:0: Device or resource busy Feb 7 02:42:36 darsen-laptop pulseaudio[1789]: alsa-sink.c: Error opening PCM device front:0: Device or resource busy
I also noticed the following message during bootup and was asked to report this issue to ALSA Developers.
Feb 7 02:17:31 darsen-laptop pulseaudio[1789]: ratelimit.c: 179 events suppressed Feb 7 02:17:35 darsen-laptop pulseaudio[1789]: alsa-sink.c: ALSA woke us up to write new data to the device, but there was actually nothing to write! Feb 7 02:17:35 darsen-laptop pulseaudio[1789]: alsa-sink.c: Most likely this is a bug in the ALSA driver 'snd_hda_intel'. Please report this issue to the ALSA developers. Feb 7 02:17:35 darsen-laptop pulseaudio[1789]: alsa-sink.c: We were woken up with POLLOUT set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail. Feb 7 02:17:36 darsen-laptop pulseaudio[1789]: ratelimit.c: 182 events suppressed
The good news is my microphone started working with the newly-installed ALSA drivers (It did not work with ALSA v1.0.20)
My Linux kernel version is 2.6.31-19.general. I installed it using the Ubuntu Package Manager. On the other hand the ALSA driver was compiled from source code. ALSA was configured with the following options sudo ./configure -with-kernel=/usr/src/linux-headers-`uname -r` --with-cards=hda-intel
"lspci -v" shows the following
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03) Subsystem: Dell Device 02cf Flags: bus master, fast devsel, latency 0, IRQ 31 Memory at f6afc000 (64-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: HDA Intel Kernel modules: snd-hda-intel
I confirmed that the correct version of driver was loaded into the kernel by typing "cat /proc/asound/version":
Advanced Linux Sound Architecture Driver Version 1.0.22.1. Compiled on Feb 7 2010 for kernel 2.6.31-19-generic (SMP).
Thanks, Darsen
On Sun, Feb 7, 2010 at 3:20 AM, Darsen Lu darsenlu@gmail.com wrote:
After that I started noticing conflicts between different sound-playback applications. For example, if I watch a Flash video on Firefox, stop it, and then start playing an MP3 file on Totem (a Media Player), I don't hear any sound. Once I close Firefox the music from Totem starts coming out. This never happened before on my Linux system. I'd be very grateful if someone could give me advices!
This symptom is very improbably related to your upgrading of the driver. Instead, it's a userspace issue. Use "sudo fuser -v /dev/dsp* /dev/snd/* /dev/seq*" when you're experiencing the symptom to start troubleshooting.
Best, -Dan
Thanks for the reply.
I tried "fuser -v /dev/dsp* /dev/snd/* /dev/seq*" and found out that Adobe Flash Player was directly controlling /dev/snd/pcmC0D0p. That is when I realized I need to create /etc/asound.conf to route ALSA library to PulseAudio. The content of asound.conf follows this webpage https://wiki.ubuntu.com/PulseAudio .
Regards, Darsen
On Sun, Feb 7, 2010 at 5:29 AM, Daniel Chen seven.steps@gmail.com wrote:
On Sun, Feb 7, 2010 at 3:20 AM, Darsen Lu darsenlu@gmail.com wrote:
After that I started noticing conflicts between different sound-playback applications. For example, if I watch a Flash video on Firefox, stop it, and then start playing an MP3 file on Totem (a Media Player), I don't hear any sound. Once I close Firefox the music from Totem starts coming out. This never happened before on my Linux system. I'd be very grateful if someone could give me advices!
This symptom is very improbably related to your upgrading of the driver. Instead, it's a userspace issue. Use "sudo fuser -v /dev/dsp* /dev/snd/* /dev/seq*" when you're experiencing the symptom to start troubleshooting.
Best, -Dan
participants (2)
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Daniel Chen -
Darsen Lu