No Sound Card found in Centos with Intel....

[marshallruan]

Hi:
I've installed Centos 7 last day, it can work, but with 2 problems.
1, there is no working sound card found in ALSA
follows are lspci & lsmod informations:

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lspci | grep Audio
00:1b.0 Audio device: Intel Corporation C600/X79 series chipset High Definition Audio Controller (rev 06)
04:00.1 Audio device: NVIDIA Corporation GK107 HDMI Audio Controller (rev a1)

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 lsmod | grep snd
snd_hda_intel          48259  1 
snd_hda_codec         137343  1 snd_hda_intel
snd_hwdep              13602  1 snd_hda_codec
snd_seq                61519  0 
snd_seq_device         14497  1 snd_seq
snd_pcm                97511  2 snd_hda_codec,snd_hda_intel
snd_page_alloc         18710  2 snd_pcm,snd_hda_intel
snd_timer              29482  2 snd_pcm,snd_seq
snd                    74645  7 snd_hwdep,snd_timer,snd_pcm,snd_seq,snd_hda_codec,snd_hda_intel,snd_seq_device
soundcore              15047  1 snd

but there is no card that alsa-init can recognized the /proc/asound/cards is "no sound cards"

so, if there is somebody who can help me with that?


2. when I try to reboot the system, after the black screan for about 5secs, then shows lots of "dracut warning: blablablabla " informations, then it shows "rebooting", but never go reboot again, stucked, I have to press the reset button on computer every time.

[marshallruan]

still no one concern with my problems? I've try to talk in #centos on xchat, but there is no one help me solve that.
so, I google it again and again. but still failed with that issue.
the syslog of demsg, shows

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[   14.556519] mei_me 0000:00:16.0: host is not ready.
[   14.556588] mei_me 0000:00:16.0: link layer initialization failed.
[   14.556651] mei_me 0000:00:16.0: init hw failure.
[   14.556655] mei_me 0000:00:16.0: wait hw ready failed. status = -110
[   14.556658] mei_me 0000:00:16.0: hw_start failed disabling the device

so, I try to find what is in that,

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 cat /sys/devices/pci0000\:00/0000\:00\:16.0/vendor 
0x8086

and

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 cat /sys/devices/pci0000\:00/0000\:00\:16.0/device 
0x1d3a

after google that, the 0x1d3a is my C600/X79 chipset, so that means mei_me can not init the soundcard??

Is there something wrong with current kernel?

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uname -a
Linux localhost.localdomain 3.10.0-123.9.3.el7.x86_64 #1 SMP Thu Nov 6 15:06:03 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

[marshallruan]

Okey, everybody, My problem have been solved.
Now I am very sure about that the Kernel of 3.10 of CS7 base repo can not support my hardwares.
My solution is use the elrepo and update the kernel to 3.17

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rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org

then

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rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-2.el7.elrepo.noarch.rpm

after you install the elrepo, then install the new kernel-ml

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sudo yum --enablerepo=elrepo-kernel install kernel-ml

if you want to recompile vbox and nvidia drivers, you have to install kernel-devel

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sudo yum --enablerepo=elrepo-kernel install kernel-ml-devel

after that, my problem have been all solved, my sound card worked perfectly, and the reboot procedure do not hang.
So, I strongly recommend CS7 team solve the kernel problem.
now my kernel version is 3.17-4, and everything is fine.

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uname -a
Linux localhost.localdomain 3.17.4-1.el7.elrepo.x86_64 #1 SMP Fri Nov 21 20:10:37 EST 2014 x86_64 x86_64 x86_64 GNU/Linux

[gerald_clark]

The CentOS team does not solve software problems. They reproduce RHEL bugs and all.
Did you follow the FAQ procedures on elrepo to see if they had a module for the stock kernel?

[marshallruan]

It seems they do not have the stock kernel but mainline stable