@raymond : I read through the function stac92xx_init() in the patch you linked above. That is a very complicated piece of code and I can see how a small hardware implementation difference on my motherboard might be the root cause of the problem.
The only way for me to narrow down what is wrong will probably require me to download all the kernel & driver source and build my own custom kernel to debug it. I have not needed to do that in almost 15 years - something that the newer versions of Linux have left far behind. I might take a look but its a lot of work when I have a simple hack as a workaround. I assume that the upstream Alsa developers watch these launchpad bug listings (?) so if this becomes a more common problem this will provide some background information. If its just limited to the motherboard in the HP Pavilion p7-1227c then I don't expect there will be much interest to pursue it further. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1041322 Title: Very low sound on HP p7-1227c Status in “alsa-driver” package in Ubuntu: Confirmed Bug description: Anyone else ever encountered issues with low sound? Installed a fresh new install of ubuntu 12.04 x64 alongside Win7. Everything runs great except for the sound. Computer is a [hp pavilion p7-1227c][1]. **What i've tried:** * I've also tried adding the latest audio ppa. * reinstalling `alsa` and `alsa-mixer` * Check the settings in system -> sound * Attempted to unmute and amplify the speakers, headset etc * Modified settings in `pavucontrol` * Attempted this solution: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/271519 Also, this is my alsa output: [http://www.alsa- project.org/db/?f=de7e2bfb645f4fa5c2687ad6742d7ccdfb8fe6ec][2] Any ideas? I just installed a new install of ubuntu 12.04 on this particular computer. [1]: http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03348828&lang=en&cc=us&taskId=110&contentType=SupportFAQ&prodSeriesId=5187022&prodTypeId=12454 [2]: http://www.alsa-project.org/db/?f=de7e2bfb645f4fa5c2687ad6742d7ccdfb8fe6ec **aplay -l:** **** List of PLAYBACK Hardware Devices **** card 0: Generic [HD-Audio Generic], device 0: STAC92xx Analog [STAC92xx Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: Generic [HD-Audio Generic], device 1: STAC92xx Digital [STAC92xx Digital] Subdevices: 1/1 Subdevice #0: subdevice #0 **lsmod | grep snd** > snd_hda_codec_idt 70795 1 snd_hda_intel 33773 3 > snd_hda_codec 127706 2 snd_hda_codec_idt,snd_hda_intel > snd_hwdep 13668 1 snd_hda_codec snd_pcm > 97188 2 snd_hda_intel,snd_hda_codec snd_seq_midi 13324 0 > snd_rawmidi 30748 1 snd_seq_midi snd_seq_midi_event > 14899 1 snd_seq_midi snd_seq 61896 2 > snd_seq_midi,snd_seq_midi_event snd_timer 29990 2 > snd_pcm,snd_seq snd_seq_device 14540 3 > snd_seq_midi,snd_rawmidi,snd_seq snd 78855 15 > snd_hda_codec_idt,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device > soundcore 15091 1 snd snd_page_alloc 18529 2 > snd_hda_intel,snd_pcm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1041322/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
