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 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1649727 Title: No sound card detected with device: Intel Corporation Device 9d71 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1649727/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
