I'm no longer experiencing this on 4.13.0 series kernels.
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https://bugs.launchpad.net/bugs/1649727
Title:
No sound card detected with device: Intel Corporation Device 9d71
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?
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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
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
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.
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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
I went back to 4.4.0 - sound works. It doesn't work in 4.8 or 4.9.
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https://bugs.launchpad.net/bugs/1649727
Title:
No sound card detected with device: Intel Corporation
I tried this and still get the "Dummy Output" when booting on 4.9. Tag
added as requested.
Thanks
** Tags added: kernel-bug-exists-upstream
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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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
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.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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