Description of problem: * quiet sound: even if all volumes are set to 100%, the sound is unusually quiet; my stereo speakers are connected to Front output * there is no master channel and no PCM channel in alsamixer * there is a channel mode switch, but the only available option is 8ch while I know that this card supports 2, 4, 6, and 8ch modes Note: Missing PCM channel is fixed in alsa-1.0.11 final. I've filed a bugreport with ALSA: bug number 2145 (see URL). Version-Release number of selected component (if applicable): kernel-2.6.16-1.2122_FC5 How reproducible: Always Steps to Reproduce: 1. run alsamixer 2. 3. Additional info: $ lspci -v 00:10.1 Audio device: nVidia Corporation MCP51 High Definition Audio (rev a2) Subsystem: Giga-byte Technology Unknown device a102 Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 17 Memory at e5100000 (32-bit, non-prefetchable) [size=16K] Capabilities: [44] Power Management version 2 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [6c] HyperTransport: MSI Mapping $ lspci -vn 00:10.1 0403: 10de:026c (rev a2) Subsystem: 1458:a102 Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 17 Memory at e5100000 (32-bit, non-prefetchable) [size=16K] Capabilities: [44] Power Management version 2 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [6c] HyperTransport: MSI Mapping $ cat /proc/asound/cards 0 [NVidia ]: HDA-Intel - HDA NVidia HDA NVidia at 0xe5100000 irq 17 $ lsmod | grep snd snd_hda_intel 52185 2 snd_hda_codec 175169 1 snd_hda_intel snd_seq_dummy 37061 0 snd_seq_oss 66241 0 snd_seq_midi_event 41025 1 snd_seq_oss snd_seq 89825 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event snd_seq_device 42833 3 snd_seq_dummy,snd_seq_oss,snd_seq snd_pcm_oss 85457 0 snd_mixer_oss 50881 1 snd_pcm_oss snd_pcm 126409 3 snd_hda_intel,snd_hda_codec,snd_pcm_oss snd_timer 59465 2 snd_seq,snd_pcm snd 97129 13 snd_hda_intel,snd_hda_codec,snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer soundcore 44129 1 snd snd_page_alloc 44497 2 snd_hda_intel,snd_pcm
Created attachment 129877 [details] amixer output
Update: With latest kernel (2.6.17-1.2157_FC5) the PCM channel appears, but changing its volume doesn't have any effect. Other problems are still there.
Update: No change with latest kernel (kernel-2.6.17-1.2174_FC5).
I can confirm that this is still a problem with kernel 2.6.17-1.2187_FC5 (x86_64).
A new kernel update has been released (Version: 2.6.18-1.2200.fc5) based upon a new upstream kernel release. Please retest against this new kernel, as a large number of patches go into each upstream release, possibly including changes that may address this problem. This bug has been placed in NEEDINFO state. Due to the large volume of inactive bugs in bugzilla, if this bug is still in this state in two weeks time, it will be closed. Should this bug still be relevant after this period, the reporter can reopen the bug at any time. Any other users on the Cc: list of this bug can request that the bug be reopened by adding a comment to the bug. In the last few updates, some users upgrading from FC4->FC5 have reported that installing a kernel update has left their systems unbootable. If you have been affected by this problem please check you only have one version of device-mapper & lvm2 installed. See bug 207474 for further details. If this bug is a problem preventing you from installing the release this version is filed against, please see bug 169613. If this bug has been fixed, but you are now experiencing a different problem, please file a separate bug for the new problem. Thank you.
Still no change compared to comment #2.
This sounds like the typical "creative sound hardware wiring" problem faced by countless boxes... Please attach the output of 'lspci -n'. We may need more info later... :-)
Created attachment 140529 [details] lspci -n output Attached.
One more bit of information, which I discovered only recently: It appears that if I use ALSA device "surround40", the PCM channel control suddenly starts working. I got it to work in bmp/audacious and mplayer. Oh, and FC6 kernel and alsa suffer from the same problem (I've just upgraded).
With kernel-2.6.19-1.2895.fc6 and updated alsa 1.0.14rc1 the PCM channel is gone again.
Created attachment 160094 [details] System Config Soundcard Log This is a me too comment. I've attached the automatically generated log file from F7s soundcard detection
I have the same Nvidia sound card on an ASUS M2N-MX board. The sound card was working with the additional settings options snd-hda-intel position_fix=1 model=3stack Recently it stopped working after recent upgrades to alsa-lib. The sound could be heard from only one channel and if any change is made in mixer settings, the sound card falls silent. Downgrading the alsa-lib to alsa-lib-1.0.14-0.4.rc3.fc7 has restored the status.
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Yes, these issues: * PCM channel being inoperative * low volume * no ability to switch to 2ch mode * there's no "Boost Mic signal" option (hence recording is rendered useless) are still reproducible with latest F-7 updates: $ rpm -q kernel alsa-lib kernel-2.6.23.15-80.fc7.x86_64 alsa-lib-1.0.14-3.fc7.x86_64
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Still present in F-8. $ rpm -q kernel alsa-lib kernel-2.6.24.7-92.fc8 alsa-lib-1.0.15-1.fc8
Try F-9, there's ALSA 1.0.16 there.
Upgraded to F-9, these issues are still present: * PCM channel being inoperative unless >2 speakers are connected * low volume * no ability to switch to 2ch mode * there's no "Boost Mic signal" option (hence recording is rendered useless) One more issue, and this one is a real joy-killer. It seems that somehow, a high-pass filter gets activated by default and the basses are cut off. I only noticed that after buying a subwoofer for my stereo set. However, if I set the model to auto, i.e. modprobe snd-hda-intel model=auto I get another on/off switch in the mixer, called "Headphone", which seems to switch between a low-pass and high-pass filtering. I.e., I can get either higher or lower frequencies cut-off, but I can't disable the cut-off at all. Moreover, I was playing with using other model settings, and it appears that the asus* models set the card properly in this regard, and I get both high and low frequencies without any filtering. Sadly, it works only in 2ch mode. Any speakers connected to higher ports (back, LFE+Center or side) remain silent. I tried different models and I seem to get good bass and treble with model=asus-dig, but then I don't get more than 2 output channels. $ rpm -q kernel alsa-lib kernel-2.6.26.3-29.fc9.x86_64 alsa-lib-1.0.17-2.fc9.x86_64
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On F-11 the same problem still persists, but now there's no "Headphone" control and I always get the high-pass filter enabled (=no bass). kernel-2.6.30.9-90.fc11.x86_64 alsa-lib-1.0.21-3.fc11.x86_64
My MCP51 (ALC880) sound was working until one of the last kernel updates in F10. I just upgraded to F12 and the max headphone volume is really low. I tried every setting under preferences sound with no increased volume. lspci -v Definition Audio (rev a2) Subsystem: Micro-Star International Co., Ltd. K8NGM2 series Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 22 Memory at fead0000 (32-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: HDA Intel Kernel modules: snd-hda-intel I have a MSI K8NGM2 motherboard with the integrated ALC880 sound chip.
This message is a reminder that Fedora 11 is nearing its end of life. Approximately 30 (thirty) days from now Fedora will stop maintaining and issuing updates for Fedora 11. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as WONTFIX if it remains open with a Fedora 'version' of '11'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version prior to Fedora 11's end of life. Bug Reporter: Thank you for reporting this issue and we are sorry that we may not be able to fix it before Fedora 11 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora please change the 'version' of this bug to the applicable version. If you are unable to change the version, please add a comment here and someone will do it for you. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. The process we are following is described here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping
Fedora 11 changed to end-of-life (EOL) status on 2010-06-25. Fedora 11 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. Thank you for reporting this bug and we are sorry it could not be fixed.