* Can not rmmod snd_hda_codec_hdmi @ 2014-12-23 11:07 Xuebing Wang 2014-12-23 16:21 ` Clemens Ladisch 0 siblings, 1 reply; 10+ messages in thread From: Xuebing Wang @ 2014-12-23 11:07 UTC (permalink / raw) To: alsa-devel@alsa-project.org Cc: ; Takashi Iwai, Anssi Hannula, ; Libin Yang, ; Fengguang Wu, ; Mengdong Lin Hi community, I am trying to implement the function of streaming SACD music over HDMI, my PC is Intel Haswell based CPU (Intel i7 4770). When I am trying to 'rmmod snd_hda_codec_hdmi', I get the prompt that this module is in use (detailed message as below) rmmod: ERROR: Module snd_hda_codec_hdmi is in use Is it possible that workqueue [hd-audio] is using this kernel module (snd_hda_codec_hdmi)? Can I use rmmod / insmod as the way to debug this module? Thanks. Xuebing Wang ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: Can not rmmod snd_hda_codec_hdmi 2014-12-23 11:07 Can not rmmod snd_hda_codec_hdmi Xuebing Wang @ 2014-12-23 16:21 ` Clemens Ladisch 2014-12-24 9:49 ` Xuebing Wang 0 siblings, 1 reply; 10+ messages in thread From: Clemens Ladisch @ 2014-12-23 16:21 UTC (permalink / raw) To: Xuebing Wang, alsa-devel@alsa-project.org Cc: ; Takashi Iwai, Anssi Hannula, ; Libin Yang, ; Fengguang Wu, ; Mengdong Lin Xuebing Wang wrote: >rmmod: ERROR: Module snd_hda_codec_hdmi is in use rmmod snd-hda-intel first. Regards, Clemens ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: Can not rmmod snd_hda_codec_hdmi 2014-12-23 16:21 ` Clemens Ladisch @ 2014-12-24 9:49 ` Xuebing Wang 2014-12-24 9:57 ` Anssi Hannula 0 siblings, 1 reply; 10+ messages in thread From: Xuebing Wang @ 2014-12-24 9:49 UTC (permalink / raw) To: Clemens Ladisch Cc: ; Libin Yang, alsa-devel@alsa-project.org, ; Takashi Iwai, ; Mengdong Lin, Anssi Hannula, ; Fengguang Wu Clemens, thanks for your help. I am using Fedora 21 (Ubuntu 14.04.1 has the same problem). 'rmmod snd-hda-intel' shows this module is in use too. 'modinfo snd-hda-intel', nor file /lib/modules/.../modules.dep shows that any kernel modules depends on snd-hda-intel or snd_hda_codec_hdmi. Is it possible that a kernel thread is using these 2 modules? Any ideas? Thanks. On Tue, 2014-12-23 at 17:21 +0100, Clemens Ladisch wrote: > Xuebing Wang wrote: > >rmmod: ERROR: Module snd_hda_codec_hdmi is in use > > rmmod snd-hda-intel first. > > > Regards, > Clemens > ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: Can not rmmod snd_hda_codec_hdmi 2014-12-24 9:49 ` Xuebing Wang @ 2014-12-24 9:57 ` Anssi Hannula 2014-12-24 11:54 ` Xuebing Wang 0 siblings, 1 reply; 10+ messages in thread From: Anssi Hannula @ 2014-12-24 9:57 UTC (permalink / raw) To: Xuebing Wang Cc: ; Libin Yang, alsa-devel@alsa-project.org, ; Takashi Iwai, ; Mengdong Lin, Clemens Ladisch, ; Fengguang Wu 24.12.2014, 11:49, Xuebing Wang kirjoitti: > On Tue, 2014-12-23 at 17:21 +0100, Clemens Ladisch wrote: >> Xuebing Wang wrote: >>> rmmod: ERROR: Module snd_hda_codec_hdmi is in use >> >> rmmod snd-hda-intel first. >> > Clemens, thanks for your help. > > I am using Fedora 21 (Ubuntu 14.04.1 has the same problem). > > 'rmmod snd-hda-intel' shows this module is in use too. > > 'modinfo snd-hda-intel', nor file /lib/modules/.../modules.dep shows that any kernel modules depends > on snd-hda-intel or snd_hda_codec_hdmi. > > Is it possible that a kernel thread is using these 2 modules? > > Any ideas? Thanks. Run this to see if some userspace process is using the ALSA devices: fuser -v /dev/snd/* -- Anssi Hannula ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: Can not rmmod snd_hda_codec_hdmi 2014-12-24 9:57 ` Anssi Hannula @ 2014-12-24 11:54 ` Xuebing Wang 2014-12-24 12:28 ` Takashi Sakamoto 0 siblings, 1 reply; 10+ messages in thread From: Xuebing Wang @ 2014-12-24 11:54 UTC (permalink / raw) To: Anssi Hannula Cc: ; Libin Yang, alsa-devel@alsa-project.org, ; Takashi Iwai, ; Mengdong Lin, Clemens Ladisch, ; Fengguang Wu On Wed, 2014-12-24 at 11:57 +0200, Anssi Hannula wrote: > 24.12.2014, 11:49, Xuebing Wang kirjoitti: > > On Tue, 2014-12-23 at 17:21 +0100, Clemens Ladisch wrote: > >> Xuebing Wang wrote: > >>> rmmod: ERROR: Module snd_hda_codec_hdmi is in use > >> > >> rmmod snd-hda-intel first. > >> > > Clemens, thanks for your help. > > > > I am using Fedora 21 (Ubuntu 14.04.1 has the same problem). > > > > 'rmmod snd-hda-intel' shows this module is in use too. > > > > 'modinfo snd-hda-intel', nor file /lib/modules/.../modules.dep shows that any kernel modules depends > > on snd-hda-intel or snd_hda_codec_hdmi. > > > > Is it possible that a kernel thread is using these 2 modules? > > > > Any ideas? Thanks. > > Run this to see if some userspace process is using the ALSA devices: > fuser -v /dev/snd/* > Anssi, thanks for your help. 1) In Fedora 21 (kernel 3.17.4), 'fuser -v /dev/snd/*' shows below: /dev/snd/controlC0: xbing 2400 F.... pulseaudio /dev/snd/controlC1: xbing 2400 F.... pulseaudio /dev/snd/pcmC0D3p: xbing 2400 F...m pulseaudio /dev/snd/pcmC1D0c: xbing 2400 F...m pulseaudio /dev/snd/pcmC1D0p: xbing 2400 F...m pulseaudio After 'pulseaudio --kill' to kill pulseaudio (after disable autospawn), lsmod shows refcount of snd_hda_intel is down from 7 to 2 as below: $ lsmod | grep hda_intel snd_hda_intel 30479 2 'rmmod snd_hda_intel' still shows this module is in use. 2) But, in Ubuntu 14.04.1 (kernel 3.13.0) DOES work after 'pulseaudio --kill', because lsmod shows refcount of snd_hda_intel is 5. Any suggestions? Could it be because of kernel difference 3.17.4 vs 3.13.0? Thanks. ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: Can not rmmod snd_hda_codec_hdmi 2014-12-24 11:54 ` Xuebing Wang @ 2014-12-24 12:28 ` Takashi Sakamoto 2014-12-24 13:07 ` Xuebing Wang 0 siblings, 1 reply; 10+ messages in thread From: Takashi Sakamoto @ 2014-12-24 12:28 UTC (permalink / raw) To: Xuebing Wang, Anssi Hannula Cc: ; Libin Yang, alsa-devel@alsa-project.org, ; Takashi Iwai, ; Mengdong Lin, Clemens Ladisch, ; Fengguang Wu On Dec 24 2014 20:54, Xuebing Wang wrote: > Anssi, thanks for your help. > > 1) In Fedora 21 (kernel 3.17.4), > 'fuser -v /dev/snd/*' shows below: > /dev/snd/controlC0: xbing 2400 F.... pulseaudio > /dev/snd/controlC1: xbing 2400 F.... pulseaudio > /dev/snd/pcmC0D3p: xbing 2400 F...m pulseaudio > /dev/snd/pcmC1D0c: xbing 2400 F...m pulseaudio > /dev/snd/pcmC1D0p: xbing 2400 F...m pulseaudio > > After 'pulseaudio --kill' to kill pulseaudio (after disable autospawn), > lsmod shows refcount of snd_hda_intel is down from 7 to 2 as below: > $ lsmod | grep hda_intel > snd_hda_intel 30479 2 > > 'rmmod snd_hda_intel' still shows this module is in use. > > 2) But, in Ubuntu 14.04.1 (kernel 3.13.0) DOES work after 'pulseaudio --kill', because lsmod shows refcount of snd_hda_intel is 5. > > Any suggestions? Could it be because of kernel difference 3.17.4 vs 3.13.0? In Ubuntu, pulseaudio process re-run even if you kill the process. See: https://wiki.ubuntu.com/PulseAudio/Log But in this case, you don't need to kill pulseaudio. You just set 'off' for card profile, or unload alsa-card module. Then these character devices are released. The way to set card profile: $ pactl list cards | grep Card Card #3 $ pactl set-card-profile 3 off Or use 'configuration' tab in pavucontrol GUI. In Ubuntu, this application is released by 'pavucontrol' package. The way to unload alsa-card module: $ pactl list modules | grep alsa (... you can see module-alsa-card is loaded.) $ pactl unload-module module-alsa-card $ pactl list modules | grep alsa (... you can see module-alsa-card is unloaded.) Regards Takashi Sakamoto o-takashi@sakamocchi.jp ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: Can not rmmod snd_hda_codec_hdmi 2014-12-24 12:28 ` Takashi Sakamoto @ 2014-12-24 13:07 ` Xuebing Wang 2014-12-24 13:21 ` Takashi Sakamoto 0 siblings, 1 reply; 10+ messages in thread From: Xuebing Wang @ 2014-12-24 13:07 UTC (permalink / raw) To: Takashi Sakamoto Cc: ; Libin Yang, alsa-devel@alsa-project.org, ; Takashi Iwai, ; Mengdong Lin, Clemens Ladisch, Anssi Hannula, ; Fengguang Wu On 三, 2014-12-24 at 21:28 +0900, Takashi Sakamoto wrote: > On Dec 24 2014 20:54, Xuebing Wang wrote: > > Anssi, thanks for your help. > > > > 1) In Fedora 21 (kernel 3.17.4), > > 'fuser -v /dev/snd/*' shows below: > > /dev/snd/controlC0: xbing 2400 F.... pulseaudio > > /dev/snd/controlC1: xbing 2400 F.... pulseaudio > > /dev/snd/pcmC0D3p: xbing 2400 F...m pulseaudio > > /dev/snd/pcmC1D0c: xbing 2400 F...m pulseaudio > > /dev/snd/pcmC1D0p: xbing 2400 F...m pulseaudio > > > > After 'pulseaudio --kill' to kill pulseaudio (after disable autospawn), > > lsmod shows refcount of snd_hda_intel is down from 7 to 2 as below: > > $ lsmod | grep hda_intel > > snd_hda_intel 30479 2 > > > > 'rmmod snd_hda_intel' still shows this module is in use. > > > > 2) But, in Ubuntu 14.04.1 (kernel 3.13.0) DOES work after 'pulseaudio --kill', because lsmod shows refcount of snd_hda_intel is 5. > > > > Any suggestions? Could it be because of kernel difference 3.17.4 vs 3.13.0? > > In Ubuntu, pulseaudio process re-run even if you kill the process. See: > https://wiki.ubuntu.com/PulseAudio/Log > > But in this case, you don't need to kill pulseaudio. You just set 'off' > for card profile, or unload alsa-card module. Then these character > devices are released. > > The way to set card profile: > $ pactl list cards | grep Card > Card #3 > $ pactl set-card-profile 3 off > > Or use 'configuration' tab in pavucontrol GUI. In Ubuntu, this > application is released by 'pavucontrol' package. > > The way to unload alsa-card module: > $ pactl list modules | grep alsa > (... you can see module-alsa-card is loaded.) > $ pactl unload-module module-alsa-card > $ pactl list modules | grep alsa > (... you can see module-alsa-card is unloaded.) Sakamoto-san, thank you very much for your sophisticated way, it helps. 1) I am sorry that I forgot to mention that I disabled 'pulseaudio autospawn' in Ubuntu too, as I disabled 'pulseaudio autospawn' in Fedora. Both simply 'pulseaudio --kill' (after disable autospawn) and your sophisticated way can get down refcount of snd_hda_intel from 5 to 0, then I can rmmod snd_hda_intel. 2) However, in Fedora, 'pulseaudio --kill' or your way can get refcount of snd_hda_intel from 7 to 2 (5 decreased). Any suggestions how to decrease the rest 2 refcount? 3) I did try to build tag 3.13 from mainline kernel (using Fedora 3.17.4 config file) and tried 3.13 kernel on Fedora, and got the same result (refcount of snd_hda_intel is down from 7 to 2). It seems something in Fedora (either Fedora kernel or application) is using snd_hda_intel. Thanks again. > Regards > > Takashi Sakamoto > o-takashi@sakamocchi.jp > _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: Can not rmmod snd_hda_codec_hdmi 2014-12-24 13:07 ` Xuebing Wang @ 2014-12-24 13:21 ` Takashi Sakamoto 2014-12-24 13:27 ` Xuebing Wang 0 siblings, 1 reply; 10+ messages in thread From: Takashi Sakamoto @ 2014-12-24 13:21 UTC (permalink / raw) To: Xuebing Wang Cc: ; Libin Yang, alsa-devel@alsa-project.org, ; Takashi Iwai, ; Mengdong Lin, Clemens Ladisch, Anssi Hannula, ; Fengguang Wu On Dec 24 2014 22:07, Xuebing Wang wrote: > 2) However, in Fedora, 'pulseaudio --kill' or your way can get refcount > of snd_hda_intel from 7 to 2 (5 decreased). Any suggestions how to > decrease the rest 2 refcount? > > 3) I did try to build tag 3.13 from mainline kernel (using Fedora 3.17.4 > config file) and tried 3.13 kernel on Fedora, and got the same result > (refcount of snd_hda_intel is down from 7 to 2). Hm. In this case that the refcount is down to 2, how is the output of 'fuser' command? If any applications use these character devices, we can see the name of command. Regards Takashi Sakamoto o-takashi@sakamocchi.jp ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: Can not rmmod snd_hda_codec_hdmi 2014-12-24 13:21 ` Takashi Sakamoto @ 2014-12-24 13:27 ` Xuebing Wang 2014-12-24 19:02 ` Jaroslav Kysela 0 siblings, 1 reply; 10+ messages in thread From: Xuebing Wang @ 2014-12-24 13:27 UTC (permalink / raw) To: Takashi Sakamoto Cc: ; Libin Yang, alsa-devel@alsa-project.org, ; Takashi Iwai, ; Mengdong Lin, Clemens Ladisch, Anssi Hannula, ; Fengguang Wu On Wed, 2014-12-24 at 22:21 +0900, Takashi Sakamoto wrote: > On Dec 24 2014 22:07, Xuebing Wang wrote: > > 2) However, in Fedora, 'pulseaudio --kill' or your way can get refcount > > of snd_hda_intel from 7 to 2 (5 decreased). Any suggestions how to > > decrease the rest 2 refcount? > > > > 3) I did try to build tag 3.13 from mainline kernel (using Fedora 3.17.4 > > config file) and tried 3.13 kernel on Fedora, and got the same result > > (refcount of snd_hda_intel is down from 7 to 2). > > Hm. In this case that the refcount is down to 2, how is the output of > 'fuser' command? If any applications use these character devices, we can > see the name of command. Sakamoto-san, thanks for your help. I found out that it is alsactl in Fedora. After kill alsactl, refcnt is now down to 0, and both snd_hda_intel and snd_hda_codec_hdmi can be rmmod'ed. 'fuser -v /dev/snd' does not reveal alsactl. Thanks again. > Regards > > Takashi Sakamoto > o-takashi@sakamocchi.jp > ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: Can not rmmod snd_hda_codec_hdmi 2014-12-24 13:27 ` Xuebing Wang @ 2014-12-24 19:02 ` Jaroslav Kysela 0 siblings, 0 replies; 10+ messages in thread From: Jaroslav Kysela @ 2014-12-24 19:02 UTC (permalink / raw) To: Xuebing Wang, Takashi Sakamoto Cc: ; Libin Yang, alsa-devel@alsa-project.org, ; Takashi Iwai, ; Mengdong Lin, Clemens Ladisch, Anssi Hannula, ; Fengguang Wu Dne 24.12.2014 v 14:27 Xuebing Wang napsal(a): > On Wed, 2014-12-24 at 22:21 +0900, Takashi Sakamoto wrote: >> On Dec 24 2014 22:07, Xuebing Wang wrote: >>> 2) However, in Fedora, 'pulseaudio --kill' or your way can get refcount >>> of snd_hda_intel from 7 to 2 (5 decreased). Any suggestions how to >>> decrease the rest 2 refcount? >>> >>> 3) I did try to build tag 3.13 from mainline kernel (using Fedora 3.17.4 >>> config file) and tried 3.13 kernel on Fedora, and got the same result >>> (refcount of snd_hda_intel is down from 7 to 2). >> >> Hm. In this case that the refcount is down to 2, how is the output of >> 'fuser' command? If any applications use these character devices, we can >> see the name of command. > > Sakamoto-san, thanks for your help. > > I found out that it is alsactl in Fedora. After kill alsactl, refcnt is > now down to 0, and both snd_hda_intel and snd_hda_codec_hdmi can be > rmmod'ed. 'fuser -v /dev/snd' does not reveal alsactl. > > Thanks again. The command should be: $ fuser /dev/snd/* And you can stop the alsa state service in Fedora using: $ systemctl stop alsa-state.service Jaroslav --- Jaroslav Kysela <perex@perex.cz> Linux Kernel Sound Maintainer ALSA Project; Red Hat, Inc. ^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2014-12-24 19:02 UTC | newest] Thread overview: 10+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2014-12-23 11:07 Can not rmmod snd_hda_codec_hdmi Xuebing Wang 2014-12-23 16:21 ` Clemens Ladisch 2014-12-24 9:49 ` Xuebing Wang 2014-12-24 9:57 ` Anssi Hannula 2014-12-24 11:54 ` Xuebing Wang 2014-12-24 12:28 ` Takashi Sakamoto 2014-12-24 13:07 ` Xuebing Wang 2014-12-24 13:21 ` Takashi Sakamoto 2014-12-24 13:27 ` Xuebing Wang 2014-12-24 19:02 ` Jaroslav Kysela
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