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acidunit
n00b
Joined: 14 Jul 2018
Posts: 15
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 Posted: Sat Jul 14, 2018 11:07 pm Post subject: alsamixer: cannot open mixer: No such file or directory |
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ls /dev | grep mixer returns nothing. ls /dev/snd/control* returns nothing. cat /proc/asound/cards returns "--- no soundcards ---". My user is a part of the audio group. It doesn't work as root.
I've been trying to fix this for over an hour now, can anyone help? |
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krinn
Watchman
Joined: 02 May 2003
Posts: 7470
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| Posted: Sat Jul 14, 2018 11:37 pm Post subject: |
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fixing sound is generally easy, but do takes times as we will drive you and wait for your answers. This to say, because it really sucks to not have sound, you may wish ask help in irc, you'll get a more living question/answer and quicker solve.
in case you could wait, here's the things to check.
infos from dmesg
| Code: | | dmesg | grep "snd\|sound" -i |
identify the card module (if your kernel cannot output this, use a livecd), should be snd_hda_intel, but you might have other too.
| Code: | | lspci -k | grep Audio -A4 |
identify the card codec
| Code: | | head -1 /proc/asound/card*/codec* |
verify kernel (because nearly everyone own a card that use SND_HDA), correct answer is mostly everything set as module or buildin
| Code: | | grep SND_HDA /usr/src/linux/.config |
please make sure the right kernel parameters are set, lacking them is the logical result of your "no soundcards" |
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acidunit
n00b
Joined: 14 Jul 2018
Posts: 15
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| Posted: Sun Jul 15, 2018 12:18 am Post subject: |
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| krinn wrote: | fixing sound is generally easy, but do takes times as we will drive you and wait for your answers. This to say, because it really sucks to not have sound, you may wish ask help in irc, you'll get a more living question/answer and quicker solve.
in case you could wait, here's the things to check.
infos from dmesg
| Code: | | dmesg | grep "snd\|sound" -i |
identify the card module (if your kernel cannot output this, use a livecd), should be snd_hda_intel, but you might have other too.
| Code: | | lspci -k | grep Audio -A4 |
identify the card codec
| Code: | | head -1 /proc/asound/card*/codec* |
verify kernel (because nearly everyone own a card that use SND_HDA), correct answer is mostly everything set as module or buildin
| Code: | | grep SND_HDA /usr/src/linux/.config |
please make sure the right kernel parameters are set, lacking them is the logical result of your "no soundcards" |
"dmesg | grep "snd\|sound" -i" returns "No soundcards found" after the ALSA driver initializes.
"lspci -k | grep Audio -A4" returns a valid audio device.
"head -1 /proc/asound/card*/codec*" returns "cannot open '/proc/asound/card*/codec*' for reading: No such file or directory"
"grep SND_HDA /usr/src/linux/.config" retrns CONFIG_SND_HDA=y.
I'm not sure how to check the kernel parameters, as the Archwiki guide does not work for me on all installations of GRUB I have used  |
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Jaglover
Watchman
Joined: 29 May 2005
Posts: 8291
Location: Saint Amant, Acadiana
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| Posted: Sun Jul 15, 2018 12:32 am Post subject: |
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You need correct driver enabled in kernel, then the device nodes will appear in /dev/.
My conf as an example, I have Realtek sound chip and also I want HDMI sound.
| Code: | CONFIG_SND_HDA=y
CONFIG_SND_HDA_INTEL=y
# CONFIG_SND_HDA_HWDEP is not set
# CONFIG_SND_HDA_RECONFIG is not set
# CONFIG_SND_HDA_INPUT_BEEP is not set
# CONFIG_SND_HDA_PATCH_LOADER is not set
CONFIG_SND_HDA_CODEC_REALTEK=y
# CONFIG_SND_HDA_CODEC_ANALOG is not set
# CONFIG_SND_HDA_CODEC_SIGMATEL is not set
# CONFIG_SND_HDA_CODEC_VIA is not set
CONFIG_SND_HDA_CODEC_HDMI=y
# CONFIG_SND_HDA_CODEC_CIRRUS is not set
# CONFIG_SND_HDA_CODEC_CONEXANT is not set
# CONFIG_SND_HDA_CODEC_CA0110 is not set
# CONFIG_SND_HDA_CODEC_CA0132 is not set
# CONFIG_SND_HDA_CODEC_CMEDIA is not set
# CONFIG_SND_HDA_CODEC_SI3054 is not set
CONFIG_SND_HDA_GENERIC=y
CONFIG_SND_HDA_POWER_SAVE_DEFAULT=0
CONFIG_SND_HDA_CORE=y
CONFIG_SND_HDA_I915=y
CONFIG_SND_HDA_PREALLOC_SIZE=512
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acidunit
n00b
Joined: 14 Jul 2018
Posts: 15
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| Posted: Sun Jul 15, 2018 12:44 am Post subject: |
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| Jaglover wrote: | You need correct driver enabled in kernel, then the device nodes will appear in /dev/.
My conf as an example, I have Realtek sound chip and also I want HDMI sound.
| Code: | CONFIG_SND_HDA=y
CONFIG_SND_HDA_INTEL=y
# CONFIG_SND_HDA_HWDEP is not set
# CONFIG_SND_HDA_RECONFIG is not set
# CONFIG_SND_HDA_INPUT_BEEP is not set
# CONFIG_SND_HDA_PATCH_LOADER is not set
CONFIG_SND_HDA_CODEC_REALTEK=y
# CONFIG_SND_HDA_CODEC_ANALOG is not set
# CONFIG_SND_HDA_CODEC_SIGMATEL is not set
# CONFIG_SND_HDA_CODEC_VIA is not set
CONFIG_SND_HDA_CODEC_HDMI=y
# CONFIG_SND_HDA_CODEC_CIRRUS is not set
# CONFIG_SND_HDA_CODEC_CONEXANT is not set
# CONFIG_SND_HDA_CODEC_CA0110 is not set
# CONFIG_SND_HDA_CODEC_CA0132 is not set
# CONFIG_SND_HDA_CODEC_CMEDIA is not set
# CONFIG_SND_HDA_CODEC_SI3054 is not set
CONFIG_SND_HDA_GENERIC=y
CONFIG_SND_HDA_POWER_SAVE_DEFAULT=0
CONFIG_SND_HDA_CORE=y
CONFIG_SND_HDA_I915=y
CONFIG_SND_HDA_PREALLOC_SIZE=512
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How do I enable HDMI in the menuconfig? What options are it under? |
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ali3nx
l33t
Joined: 21 Sep 2003
Posts: 722
Location: Winnipeg, Canada
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| Posted: Sun Jul 15, 2018 12:53 am Post subject: |
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Here's four screenshots displaying the proper and correctly configured modular menuconfig setup for alsa. adjust your HD audio chipset driver as required. HDMI/Displayport support is also enabled.
Also note the pre-allocated HD audio buffer size is configured as recommended to 2 MB
https://i.imgur.com/9A3KECC.png
https://i.imgur.com/e6gO2Tw.png
https://i.imgur.com/9H9TocU.png
https://i.imgur.com/xZV7q5r.png
It's important and beneficial with alsa to use a modular kernel config as more often than not if you compile the entire alsa subsystem into the kernel binary alsa will not function properly.
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acidunit
n00b
Joined: 14 Jul 2018
Posts: 15
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| Posted: Sun Jul 15, 2018 1:12 am Post subject: |
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Thanks, I'll try this now and see if it works. |
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acidunit
n00b
Joined: 14 Jul 2018
Posts: 15
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| Posted: Sun Jul 15, 2018 1:18 am Post subject: |
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It worked! Thank you, you absolute genius! |
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ali3nx
l33t
Joined: 21 Sep 2003
Posts: 722
Location: Winnipeg, Canada
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| Posted: Sun Jul 15, 2018 1:44 am Post subject: |
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| acidunit wrote: |
It worked! Thank you, you absolute genius! |
Your welcome 
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Compiling Gentoo since version 1.4
Thousands of Gentoo Installs Completed
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