hi Raymond, Thanks for pointing all this, but I need your help here:
through you raised points I reached a summary that says , the Codec I have has loopback true http://orion.lcg.ufrj.br/roma/ALSA.html http://orion.lcg.ufrj.br/roma/scripts/codecs.txt from the above link, I realized that my Codec cat /proc/asound/Intel/codec#* Codec: SigmaTel STAC9271D Address: 2 AFG Function Id: 0x1 (unsol 1) Vendor Id: 0x83847627 Subsystem Id: 0x80863001 Revision Id: 0x100201 Codec STAC9271D 9271(D)/2(D)/3(D)/4(D) has: #DACs = 5 #ADCs = 3 Analog loopback yes Maximum sampling rate 192000 1 more thing according to Alsa modules https://www.kernel.org/doc/Documentation/sound/alsa/HD-Audio-Models.txt STAC9227/9228/9229/927x ======================= ref Reference board ref-no-jd Reference board without HP/Mic jack detection 3stack D965 3stack 5stack D965 5stack + SPDIF 5stack-no-fp D965 5stack without front panel dell-3stack Dell Dimension E520 dell-bios Fixes with Dell BIOS setup dell-bios-amic Fixes with Dell BIOS setup including analog mic volknob Fixes with volume-knob widget 0x24 auto BIOS setup (default) 5stack is allocated to motherboards D965 right? my motherboard is DP35DP is this affecting in sound recognition? what shall I do here? I didnt get your summary at the end , in your last comment. What should e done If PCM stream is muted due to loopback enable set to true as per https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/Documentation/sound/alsa /HD-Audio-Controls.txt IDT/Sigmatel codecs ------------------- * Analog Loopback This control enables/disables the analog-loopback circuit. This appears only when "loopback" is set to true in a codec hint (see HD-Audio.txt). Note that on some codecs the analog-loopback and the normal PCM playback are exclusive, i.e. when this is on, you won't hear any PCM stream. Thanks -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1540372 Title: [Intel DP35DP, SigmaTel STAC9271D, Green Speaker, Rear] Underruns, dropouts or crackling sound To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1540372/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
