Soundproblem. Sound is scrambled (audacious, vlc, firefox) ; Testsound is ok ; ubuntu 20.04 lts
by gabelbart from LinuxQuestions.org on (#5D6R2)
Hi! The sound from my PC is what I would describe as scrambled, the frequencies of voices seem to be affected the most - that is with the exception of the Testsound, which appears to be just fine. That makes me suspect, that it's not entirely a soundcard-problem.
It occured on 16.04 lts first and upgrading to 20.04 lts didn't fix it.
The actual soundproblem is hard to describe, which makes it hard to search for. Physical problems with the jack or the headphones are unlikely because of the clear Testsound - checked different headphones anyway - the same result.
I went through the "soundtroubleshooting" on help.ubuntu so i'm pretty sure, nothing is set to mute, the system recognizes the soundcard, the soundmodules are installed, and I found out that my soundcard was at least supported by ubuntu 14.04 , though it's not on the list on alsa-project.org
Information:
lspci
Code:00:00.0 Host bridge: Intel Corporation 4th Gen Core Processor DRAM Controller (rev 06)
00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06)
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 04)
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)
00:19.0 Ethernet controller: Intel Corporation Ethernet Connection I217-LM (rev 04)
00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d4)
00:1c.1 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #2 (rev d4)
00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation C226 Series Chipset Family Server Advanced SKU LPC Controller (rev 04)
00:1f.2 RAID bus controller: Intel Corporation SATA Controller [RAID mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 04)
02:00.0 PCI bridge: Texas Instruments XIO2001 PCI Express-to-PCI Bridgelshw:
Code:*-multimedia
description: Audio device
product: 8 Series/C220 Series Chipset High Definition Audio Controller
vendor: Intel Corporation
physical id: 1b
bus info: pci@0000:00:1b.0
version: 04
width: 64 bits
clock: 33MHz
capabilities: bus_master cap_list
configuration: driver=snd_hda_intel latency=0
resources: irq:31 memory:f7c30000-f7c33fffcurrent distro: ubuntu 20.04 LTS ; 5.4.0-64-generic
Does anyone have an idea, what the problem is and how I can fix it?
I am happy to post more information if neccessary


It occured on 16.04 lts first and upgrading to 20.04 lts didn't fix it.
The actual soundproblem is hard to describe, which makes it hard to search for. Physical problems with the jack or the headphones are unlikely because of the clear Testsound - checked different headphones anyway - the same result.
I went through the "soundtroubleshooting" on help.ubuntu so i'm pretty sure, nothing is set to mute, the system recognizes the soundcard, the soundmodules are installed, and I found out that my soundcard was at least supported by ubuntu 14.04 , though it's not on the list on alsa-project.org
Information:
lspci
Code:00:00.0 Host bridge: Intel Corporation 4th Gen Core Processor DRAM Controller (rev 06)
00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06)
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 04)
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)
00:19.0 Ethernet controller: Intel Corporation Ethernet Connection I217-LM (rev 04)
00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d4)
00:1c.1 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #2 (rev d4)
00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation C226 Series Chipset Family Server Advanced SKU LPC Controller (rev 04)
00:1f.2 RAID bus controller: Intel Corporation SATA Controller [RAID mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 04)
02:00.0 PCI bridge: Texas Instruments XIO2001 PCI Express-to-PCI Bridgelshw:
Code:*-multimedia
description: Audio device
product: 8 Series/C220 Series Chipset High Definition Audio Controller
vendor: Intel Corporation
physical id: 1b
bus info: pci@0000:00:1b.0
version: 04
width: 64 bits
clock: 33MHz
capabilities: bus_master cap_list
configuration: driver=snd_hda_intel latency=0
resources: irq:31 memory:f7c30000-f7c33fffcurrent distro: ubuntu 20.04 LTS ; 5.4.0-64-generic
Does anyone have an idea, what the problem is and how I can fix it?
I am happy to post more information if neccessary