No sound card detected with device: Intel Corporation Device 9d71

[Reuben Firmin]

On a new Dell Inspiron i5378-2885GRY, the sound device is not detected by alsa, and the UI mixer shows a "Dummy" sound card. I've attached the ubuntu-bug dump for the laptop.

I confirmed that snd- modules are loaded.

The sound card is detected by lshw and lspci. It's a Intel Corporation Device 9d71.

Fastboot is not enabled; boot is "thorough".

The sound card *did* work on two separate occasions - i.e. was detected successfully. On all subsequent boots it is not detected.

See also bugs 1641028 and 1649668. Googling for this device also shows a smattering of other problems that people are having with it.

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1649727

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Reuben Firmin (reubenf)]

Hello. See original comment - they are attached.

Apport is not working on the affected laptop. It opens chrome with a blank tab and does nothing further.

[Joseph Salisbury (jsalisbury)]

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.9 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.9

[Reuben Firmin (reubenf)]

I tried this and still get the "Dummy Output" when booting on 4.9. Tag added as requested.

Thanks

[Reuben Firmin (reubenf)]

I went back to 4.4.0 - sound works. It doesn't work in 4.8 or 4.9.

[Reuben Firmin (reubenf)]

I spoke too soon. Sound was working the first time I switched from 4.9 to 4.4, though volume couldn't be changed in the UI.

However, after I rebooted again (4.4 -> 4.4) I never got sound to work again.

I'm now returning the laptop (for this and other reasons - e.g. battery life sucks) so I can't be any further assistance on this.

[Chris D'Italia (chrisditalia)]

I am having a very similar issue with my computer see Bug #1649668. Please let me know if there is anything I can do to assist in resolving this bug.

[penalvch (penalvch)]

Reuben Firmin, this bug report is being closed due to your last comment https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1649727/comments/7 regarding you no longer have the hardware. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the revealed drop down box. You can learn more about bug statuses at https://wiki.ubuntu.com/Bugs/Status. Thank you again for taking the time to report this bug and helping to make Ubuntu better. Please submit any future bugs you may find.

[André (andre-miras)]

I'm having a similar issue with a Dell XPS 13 9360.
I'm running Gentoo and kernel 4.9.0.
COLD booting the laptop fixed it.
After the cold boot the following line reappeared in the lspci command:
00:1f.3 Audio device: Intel Corporation Device 9d71 (rev 21)

Bugs looking similar had been referenced in various places:
http://en.community.dell.com/techcenter/os-applications/f/4613/t/19999541
https://wiki.archlinux.org/index.php/Dell_XPS_13_(9343)#Sound_doesn.27t_work_after_upgrading_to_kernel_4.4.2B
https://wiki.gentoo.org/wiki/Dell_XPS_13_9360#No_sound_card_detected

[Paul Gear (paulgear)]

I'm experiencing this intermittently on a Lenovo ThinkPad T470; I'm currently running 4.12.0-041200-generic, and it has been patchy throughout the 4.12.0-rcX series. Anything I can do to gather info?

[Paul Gear (paulgear)]

I'm no longer experiencing this on 4.13.0 series kernels.