Background Noise on Dell Inspiron 3162.

[Kai-Heng Feng]

After login to the desktop on Dell Inspiron 3162
there's a very loud background noise comes from the builtin speaker.
The noise does not go away even if the speaker is muted.

The noise disappears after disabling the analog audio loopback.

[penalvch (penalvch)]

Kai-Heng Feng, thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command only once, as it will automatically gather debugging information, in a terminal:
apport-collect 1549620

When reporting bugs in the future please use apport by using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

[Kamal Mostafa (kamalmostafa)]

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-vivid' to 'verification-done-vivid'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Kamal Mostafa (kamalmostafa)]

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-wily' to 'verification-done-wily'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Kai-Heng Feng (kaihengfeng)]

vivid & wily from -proposed solve this issue.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 3.19.0-58.64

---------------
linux (3.19.0-58.64) vivid; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #1558701

  [ Upstream Kernel Changes ]

  * Revert "Revert "af_unix: Revert 'lock_interruptible' in stream receive
    code""

linux (3.19.0-57.63) vivid; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #1557623

  [ Kamal Mostafa ]

  * [Config] updateconfigs after 3.19.8-ckt16 stable update

  [ Upstream Kernel Changes ]

  * Revert "ALSA: hda - Fix noise on Gigabyte Z170X mobo"
    - LP: #1556297
  * Revert "af_unix: Revert 'lock_interruptible' in stream receive code"
    - LP: #1540731
  * iw_cxgb3: Fix incorrectly returning error on success
    - LP: #1556297
  * EVM: Use crypto_memneq() for digest comparisons
    - LP: #1556297
  * x86/entry/compat: Add missing CLAC to entry_INT80_32
    - LP: #1556297
  * iio: add HAS_IOMEM dependency to VF610_ADC
    - LP: #1556297
  * iio: dac: mcp4725: set iio name property in sysfs
    - LP: #1556297
  * iommu/vt-d: Fix 64-bit accesses to 32-bit DMAR_GSTS_REG
    - LP: #1556297
  * ASoC: rt5645: fix the shift bit of IN1 boost
    - LP: #1556297
  * cgroup: make sure a parent css isn't offlined before its children
    - LP: #1556297
  * PCI/AER: Flush workqueue on device remove to avoid use-after-free
    - LP: #1556297
  * libata: disable forced PORTS_IMPL for >= AHCI 1.3
    - LP: #1556297
  * mac80211: Requeue work after scan complete for all VIF types.
    - LP: #1556297
  * rfkill: fix rfkill_fop_read wait_event usage
    - LP: #1556297
  * ARM: dts: at91: sama5d4: fix instance id of DBGU
    - LP: #1556297
  * crypto: shash - Fix has_key setting
    - LP: #1556297
  * drm/i915/dp: fall back to 18 bpp when sink capability is unknown
    - LP: #1556297
  * ALSA: usb-audio: Fix OPPO HA-1 vendor ID
    - LP: #1556297
  * ALSA: usb-audio: Add native DSD support for PS Audio NuWave DAC
    - LP: #1556297
  * target: Fix WRITE_SAME/DISCARD conversion to linux 512b sectors
    - LP: #1556297
  * crypto: algif_hash - wait for crypto_ahash_init() to complete
    - LP: #1556297
  * iio: inkern: fix a NULL dereference on error
    - LP: #1556297
  * iio: pressure: mpl115: fix temperature offset sign
    - LP: #1556297
  * intel_scu_ipcutil: underflow in scu_reg_access()
    - LP: #1556297
  * ALSA: seq: Fix race at closing in virmidi driver
    - LP: #1556297
  * ALSA: rawmidi: Remove kernel WARNING for NULL user-space buffer check
    - LP: #1556297
  * ALSA: pcm: Fix potential deadlock in OSS emulation
    - LP: #1556297
  * ALSA: seq: Fix yet another races among ALSA timer accesses
    - LP: #1556297
  * ALSA: timer: Code cleanup
    - LP: #1556297
  * ALSA: timer: Fix link corruption due to double start or stop
    - LP: #1556297
  * libata: fix sff host state machine locking while polling
    - LP: #1556297
  * MIPS: Fix buffer overflow in syscall_get_arguments()
    - LP: #1556297
  * cputime: Prevent 32bit overflow in time[val|spec]_to_cputime()
    - LP: #1556297
  * drm: add helper to check for wc memory support
    - LP: #1556297
  * drm/radeon: mask out WC from BO on unsupported arches
    - LP: #1556297
  * ASoC: ...

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 4.2.0-35.40

---------------
linux (4.2.0-35.40) wily; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #1557706

  [ Upstream Kernel Changes ]

  * Revert "workqueue: make sure delayed work run in local cpu"
    - LP: #1556269
  * Revert "ALSA: hda - Fix noise on Gigabyte Z170X mobo"
    - LP: #1556269
  * KVM: VMX: Fix host initiated access to guest MSR_TSC_AUX
    - LP: #1552592
  * locking/qspinlock: Move __ARCH_SPIN_LOCK_UNLOCKED to qspinlock_types.h
    - LP: #1545330
  * [media] usbvision fix overflow of interfaces array
    - LP: #1556269
  * [media] usbvision: fix crash on detecting device with invalid
    configuration
    - LP: #1556269
  * ASN.1: Fix non-match detection failure on data overrun
    - LP: #1556269
  * iw_cxgb3: Fix incorrectly returning error on success
    - LP: #1556269
  * EVM: Use crypto_memneq() for digest comparisons
    - LP: #1556269
  * vmstat: explicitly schedule per-cpu work on the CPU we need it to run
    on
    - LP: #1556269
  * x86/entry/compat: Add missing CLAC to entry_INT80_32
    - LP: #1556269
  * iio-light: Use a signed return type for ltr501_match_samp_freq()
    - LP: #1556269
  * iio: add IIO_TRIGGER dependency to STK8BA50
    - LP: #1556269
  * iio: add HAS_IOMEM dependency to VF610_ADC
    - LP: #1556269
  * iio: dac: mcp4725: set iio name property in sysfs
    - LP: #1556269
  * iommu/vt-d: Fix 64-bit accesses to 32-bit DMAR_GSTS_REG
    - LP: #1556269
  * iio: light: acpi-als: Report data as processed
    - LP: #1556269
  * iio:adc:ti_am335x_adc Fix buffered mode by identifying as software
    buffer.
    - LP: #1556269
  * ASoC: rt5645: fix the shift bit of IN1 boost
    - LP: #1556269
  * ARCv2: STAR 9000950267: Handle return from intr to Delay Slot #2
    - LP: #1556269
  * cgroup: make sure a parent css isn't offlined before its children
    - LP: #1556269
  * ARM: OMAP2+: Fix wait_dll_lock_timed for rodata
    - LP: #1556269
  * ARM: OMAP2+: Fix l2dis_3630 for rodata
    - LP: #1556269
  * ARM: OMAP2+: Fix save_secure_ram_context for rodata
    - LP: #1556269
  * ARM: OMAP2+: Fix l2_inv_api_params for rodata
    - LP: #1556269
  * ARM: OMAP2+: Fix ppa_zero_params and ppa_por_params for rodata
    - LP: #1556269
  * rtlwifi: rtl8821ae: Fix 5G failure when EEPROM is incorrectly encoded
    - LP: #1556269
  * PCI/AER: Flush workqueue on device remove to avoid use-after-free
    - LP: #1556269
  * ARM: dts: Fix wl12xx missing clocks that cause hangs
    - LP: #1556269
  * libata: disable forced PORTS_IMPL for >= AHCI 1.3
    - LP: #1556269
  * mac80211: Requeue work after scan complete for all VIF types.
    - LP: #1556269
  * rfkill: fix rfkill_fop_read wait_event usage
    - LP: #1556269
  * ARM: dts: at91: sama5d4: fix instance id of DBGU
    - LP: #1556269
  * ARM: dts: at91: sama5d4ek: add phy address and IRQ for macb0
    - LP: #1556269
  * ARM: dts: at91: sama5d4 xplained: fix phy0 IRQ type
    - LP: #1556269
  * crypto: shash - Fix has_key setting
    - LP: #1556269
  * Input: vmmouse - fix absolute device registration
    - LP: #1556269
  * spi: atmel: fix gpio chip-select in case of non-DT platform
    - LP: #1556269
  ...