Public bug reported: I upgraded my laptop from 14.04 to 16.04 a couple of weeks ago. From the start I noticed that when my computer starts it makes this crackling sound, like a white noise, only for a second just before the starting tune is played. Also, when I suspend my computer the sound is always set to no volume, even though it's set to non-zero in the OS. I need to turn the volume down completely and when I turn the volume up again everything works fine. It seems like the calibration isn't working. But I need to do this every time I start up/unsuspend.
Applications with phone calls give me this crackling noise for a couple of minutes too, then it disappears. I've already tried to follow every step here: SoundTroubleshootingProcedure Output from bash alsa-info.sh --stdout Gives me (some of the output): upload=true&script=true&cardinfo= !!################################ !!ALSA Information Script v 0.4.64 !!################################ !!Script ran on: Sun Feb 5 07:44:03 UTC 2017 !!Linux Distribution !!------------------ Ubuntu 16.04.1 LTS \n \l DISTRIB_ID=Ubuntu DISTRIB_DESCRIPTION="Ubuntu 16.04.1 LTS" NAME="Ubuntu" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 16.04.1 LTS" HOME_URL="http://www.ubuntu.com/" SUPPORT_URL="http://help.ubuntu.com/" BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/" UBUNTU_CODENAME=xenial !!DMI Information !!--------------- Manufacturer: Dell Inc. Product Name: Latitude E5540 Product Version: 01 Firmware Version: A06 Board Vendor: Dell Inc. Board Name: 01389M !!ACPI Device Status Information !!--------------- /sys/bus/acpi/devices/ACPI0003:00/status 15 /sys/bus/acpi/devices/DELLABCE:00/status 15 /sys/bus/acpi/devices/DLLK05E0:00/status 15 /sys/bus/acpi/devices/INT3F0D:00/status 15 /sys/bus/acpi/devices/LNXPOWER:00/status 1 /sys/bus/acpi/devices/LNXVIDEO:00/status 15 /sys/bus/acpi/devices/PNP0103:00/status 15 /sys/bus/acpi/devices/PNP0401:00/status 13 /sys/bus/acpi/devices/PNP0C09:00/status 15 /sys/bus/acpi/devices/PNP0C0A:00/status 31 /sys/bus/acpi/devices/PNP0C0A:01/status 15 /sys/bus/acpi/devices/PNP0C0F:00/status 9 /sys/bus/acpi/devices/PNP0C0F:01/status 9 /sys/bus/acpi/devices/PNP0C0F:02/status 9 /sys/bus/acpi/devices/PNP0C0F:03/status 9 /sys/bus/acpi/devices/PNP0C0F:04/status 9 /sys/bus/acpi/devices/PNP0C0F:05/status 9 /sys/bus/acpi/devices/PNP0C0F:06/status 9 /sys/bus/acpi/devices/PNP0C0F:07/status 9 /sys/bus/acpi/devices/PNP0C31:00/status 15 /sys/bus/acpi/devices/SMO8810:00/status 15 /sys/bus/acpi/devices/device:00/status 15 /sys/bus/acpi/devices/device:06/status 15 /sys/bus/acpi/devices/device:0a/status 15 /sys/bus/acpi/devices/device:2f/status 15 /sys/bus/acpi/devices/device:30/status 15 /sys/bus/acpi/devices/device:31/status 15 /sys/bus/acpi/devices/device:32/status 15 /sys/bus/acpi/devices/device:33/status 15 /sys/bus/acpi/devices/device:34/status 15 /sys/bus/acpi/devices/device:35/status 15 /sys/bus/acpi/devices/device:36/status 15 /sys/bus/acpi/devices/device:3b/status 15 /sys/bus/acpi/devices/device:3c/status 15 /sys/bus/acpi/devices/device:3d/status 15 /sys/bus/acpi/devices/device:44/status 15 /sys/bus/acpi/devices/device:45/status 15 /sys/bus/acpi/devices/device:46/status 15 /sys/bus/acpi/devices/device:47/status 15 /sys/bus/acpi/devices/device:5b/status 15 !!Kernel Information !!------------------ Kernel release: 4.4.8-040408-lowlatency Operating System: GNU/Linux Architecture: x86_64 Processor: x86_64 SMP Enabled: Yes !!ALSA Version !!------------ Driver version: k4.4.8-040408-lowlatency Library version: 1.1.0 Utilities version: 1.1.0 !!Loaded ALSA modules !!------------------- snd_hda_intel snd_hda_intel !!Sound Servers on this system !!---------------------------- Pulseaudio: Installed - Yes (/usr/bin/pulseaudio) Running - Yes !!Soundcards recognised by ALSA !!----------------------------- 0 [HDMI ]: HDA-Intel - HDA Intel HDMI HDA Intel HDMI at 0xf7434000 irq 50 1 [PCH ]: HDA-Intel - HDA Intel PCH HDA Intel PCH at 0xf7430000 irq 49 !!PCI Soundcards installed in the system !!-------------------------------------- 00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 0b) 00:1b.0 Audio device: Intel Corporation 8 Series HD Audio Controller (rev 04) !!Advanced information - PCI Vendor/Device/Subsystem ID's !!------------------------------------------------------- 00:03.0 0403: 8086:0a0c (rev 0b) Subsystem: 1028:05e0 -- 00:1b.0 0403: 8086:9c20 (rev 04) Subsystem: 1028:05e0 ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: eog 3.18.2-1ubuntu2.1 Uname: Linux 4.4.8-040408-lowlatency x86_64 ApportVersion: 2.20.1-0ubuntu2.5 Architecture: amd64 CurrentDesktop: Unity Date: Tue Feb 7 14:12:38 2017 ExecutablePath: /usr/bin/eog InstallationDate: Installed on 2014-09-19 (871 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) SourcePackage: eog UpgradeStatus: Upgraded to xenial on 2017-01-24 (13 days ago) ** Affects: eog (Ubuntu) Importance: Undecided Status: New ** Tags: 16.04 alsa pulseaudio sound -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to eog in Ubuntu. https://bugs.launchpad.net/bugs/1662510 Title: Sound problem Ubuntu 16.04 Dell Latitude E5540 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/eog/+bug/1662510/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs