Ubuntu: Sound card not detected (16.04)



Question:

Running Ubuntu 16.04 on a Dell XPS 13

I've just installed the OS and am dual booting with Windows 10. I'm brand new to Linux and wanted to give Ubuntu a try but I can't get any audio to play, however it works fine in Windows. My sound card isn't being recognized, aplay -l returns no soundcards found. I've tried reinstalling alsa and pulseaudio but that's done nothing. lspci -v returns:

00:1f.3 Audio device: Intel Corporation Device 9d71 (rev 21) (prog-if 80)

Subsystem: Dell Device 075b  Flags: fast devsel, IRQ 255  Memory at dc428000 (64-bit, non-prefetchable) [disabled] [size=16K]  Memory at dc400000 (64-bit, non-prefetchable) [disabled] [size=64K]  Capabilities: <access denied>  Kernel modules: snd_hda_intel  

As I say I'm brand new to linux and wanted to ease myself in gently but this is turning into a headache. Any help would be greatly appreciated.


Solution:1

This bug may be the same problem you are having, https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1551880, What you can try is upgrading the kernel module. you can upgrade to as high as the newest kernel by going to http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.8/ put the three files for your architecture in a separate folder and then open that folder in a terminal window and type sudo dpkg -i *.deb, reboot and see if the sound card is recognized. you can also research and find the module for your sound car build and install it into your current kernel. that is a little more complicated as you will have to build the module, insmod and then do a modprobe.


Solution:2

I found a Solution: the installation of dkms audio upgrade did it. Instructions are here : https://wiki.ubuntu.com/Audio/UpgradingAlsa/DKMS

See you


Solution:3

I was experiencing a similar issue. It turns out that the drivers were technically classed as 3rd-party drivers, so they were being disabled by UEFI secure boot. When I disabled this in BIOS, everything worked fine :)


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