Dell 7378 with 7th generation Intel cannot produce sound - Ask Ubuntu


usb sound card works fine, can't make intel sound card work @ all. laptop listed on certified hardware.

$ intel_audio_dump

(intel_audio_dump:3238) intel-mmio-critical: test assertion failure function intel_mmio_use_pci_bar, file ../../lib/intel_mmio.c:145: (intel_audio_dump:3238) intel-mmio-critical: failed assertion: !(error != 0) (intel_audio_dump:3238) intel-mmio-critical: last errno: 13, permission denied (intel_audio_dump:3238) intel-mmio-critical: couldn't map mmio region stack trace:   #0 [_init+0xc689]   #1 [_init+0xa2e6]   #2 [_init+0x1f81]   #3 [__libc_start_main+0xf0]   #4 [_init+0x5561]   #5 [<unknown>+0x5561] test (null) failed. **** debug **** (intel_audio_dump:3238) intel-mmio-critical: test assertion failure function intel_mmio_use_pci_bar, file ../../lib/intel_mmio.c:145: (intel_audio_dump:3238) intel-mmio-critical: failed assertion: !(error != 0) (intel_audio_dump:3238) intel-mmio-critical: last errno: 13, permission denied (intel_audio_dump:3238) intel-mmio-critical: couldn't map mmio region ****  end  **** fail (-1.000s)

just updated kernel 4.6. not fixed.

just upgrade kernel 4.8.12

you typing following in terminal:

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.8.12/linux-image-4.8.12-040812-generic_4.8.12-040812.201612020431_amd64.deb wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.8.12/linux-headers-4.8.12-040812-generic_4.8.12-040812.201612020431_amd64.deb wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.8.12/linux-headers-4.8.12-040812_4.8.12-040812.201612020431_all.deb sudo dpkg -i linux*.deb sudo reboot

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