Public bug reported:
I have been experiencing erratic video webcam performance during Zoom
meetings.
I have tried to debug and fix this problem for several weeks with no
success.
But, I think I have found a workaround and a possible clue to the root cause:
• first power on the computer without the webcam or microphone
• then connected the external USB webcam and microphone.
I have 2 computers that I use for Zoom meetings.
1. Computer A: running Ubuntu 20.04 and the latest Zoom client
• No video related problems for the past 1-2 years.
2. Computer B: running Ubuntu 24.04 and the latest Zoom client
• Erratic video performance the last several months
• Is this related to any Ubuntu 24.04 updates?
I have an external USB Kiyo webcam and an external USB Amigo Cobra
microphone that I move between the 2 computers. I use USB extension
cables on both systems to facilitate the ease of connecting and to
minimize the risk of damaging the USB port on the computers from
multiple plugging.
The relevant debug test steps on Computer B:
1. Connect the USB Kiyo and the USB Amigo to the extension cables.
2. Power on the computer
3. lsusb : both the webcam and microphone are detected
4. Cheese: no video,
1. menu > preferences shows a video device \_SB_.PG10.EUSB…….
2. but it also lists the Kiyo on the drop-down menu, select but still
no video
5. Zoom: have video
6. Unplug the Kiyo webcam, wait 10-30 sec
7. Re-plug the Kiyo webcam
8. lsusb: both the webcam and microphone are detected, the webcam has a new
device ID
9. Cheese: have video
10. Zoom: have video
I hosted 2 Zoom meeting on Sunday (8-17-25), and did not experience any
noticeable video problems.
1. Power on Computer B
2. Login to a user account
3. Connect the USB Kiyo webcam and the USB Amigo microphone
4. Ubuntu > Settings > Sound, verify that the Amigo microphone is recognized
5. Cheese: verify that I have video
6. Zoom: verify that the I have video, audio, and that the correct devices
are detected
7. Host the Zoom meeting
Apparently Ubuntu 24.04 has a problem properly detecting the USB devices
and provisioning the devices.
The workaround seems to work for external USB webcam.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.8.0-71-generic 6.8.0-71.71
ProcVersionSignature: Ubuntu 6.8.0-71.71-generic 6.8.12
Uname: Linux 6.8.0-71-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC2: j-admin 2968 F.... wireplumber
/dev/snd/controlC0: j-admin 2968 F.... wireplumber
/dev/snd/controlC1: j-admin 2968 F.... wireplumber
/dev/snd/seq: j-admin 2964 F.... pipewire
CRDA: N/A
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Mon Aug 18 20:21:41 2025
InstallationDate: Installed on 2023-11-04 (653 days ago)
InstallationMedia: Ubuntu 23.10.1 "Mantic Minotaur" - Release amd64 (20231016.1)
IwConfig:
lo no wireless extensions.
enp2s0 no wireless extensions.
MachineType: Dell Inc. Inspiron 620s
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.8.0-71-generic
root=/dev/mapper/ubuntu--vg-ubuntu--lv ro quiet splash vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-6.8.0-71-generic N/A
linux-backports-modules-6.8.0-71-generic N/A
linux-firmware 20240318.git3b128b60-0ubuntu2.15
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/12/2011
dmi.bios.release: 4.6
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A00
dmi.board.name: 0GDG8Y
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 3
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: 00
dmi.modalias:
dmi:bvnDellInc.:bvrA00:bd04/12/2011:br4.6:svnDellInc.:pnInspiron620s:pvr00:rvnDellInc.:rn0GDG8Y:rvrA00:cvnDellInc.:ct3:cvr00:skuTobefilledbyO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: Inspiron 620s
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: 00
dmi.sys.vendor: Dell Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble wayland-session
** Attachment added: "Dell620-Video-Debug_03.pdf"
https://bugs.launchpad.net/bugs/2120898/+attachment/5899864/+files/Dell620-Video-Debug_03.pdf
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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/2120898
Title:
Erratic Webcam - Webcam Detection
Status in linux package in Ubuntu:
New
Bug description:
I have been experiencing erratic video webcam performance during Zoom
meetings.
I have tried to debug and fix this problem for several weeks with no
success.
But, I think I have found a workaround and a possible clue to the root cause:
• first power on the computer without the webcam or microphone
• then connected the external USB webcam and microphone.
I have 2 computers that I use for Zoom meetings.
1. Computer A: running Ubuntu 20.04 and the latest Zoom client
• No video related problems for the past 1-2 years.
2. Computer B: running Ubuntu 24.04 and the latest Zoom client
• Erratic video performance the last several months
• Is this related to any Ubuntu 24.04 updates?
I have an external USB Kiyo webcam and an external USB Amigo Cobra
microphone that I move between the 2 computers. I use USB extension
cables on both systems to facilitate the ease of connecting and to
minimize the risk of damaging the USB port on the computers from
multiple plugging.
The relevant debug test steps on Computer B:
1. Connect the USB Kiyo and the USB Amigo to the extension cables.
2. Power on the computer
3. lsusb : both the webcam and microphone are detected
4. Cheese: no video,
1. menu > preferences shows a video device \_SB_.PG10.EUSB…….
2. but it also lists the Kiyo on the drop-down menu, select but still
no video
5. Zoom: have video
6. Unplug the Kiyo webcam, wait 10-30 sec
7. Re-plug the Kiyo webcam
8. lsusb: both the webcam and microphone are detected, the webcam has a
new device ID
9. Cheese: have video
10. Zoom: have video
I hosted 2 Zoom meeting on Sunday (8-17-25), and did not experience
any noticeable video problems.
1. Power on Computer B
2. Login to a user account
3. Connect the USB Kiyo webcam and the USB Amigo microphone
4. Ubuntu > Settings > Sound, verify that the Amigo microphone is
recognized
5. Cheese: verify that I have video
6. Zoom: verify that the I have video, audio, and that the correct
devices are detected
7. Host the Zoom meeting
Apparently Ubuntu 24.04 has a problem properly detecting the USB
devices and provisioning the devices.
The workaround seems to work for external USB webcam.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.8.0-71-generic 6.8.0-71.71
ProcVersionSignature: Ubuntu 6.8.0-71.71-generic 6.8.12
Uname: Linux 6.8.0-71-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC2: j-admin 2968 F.... wireplumber
/dev/snd/controlC0: j-admin 2968 F.... wireplumber
/dev/snd/controlC1: j-admin 2968 F.... wireplumber
/dev/snd/seq: j-admin 2964 F.... pipewire
CRDA: N/A
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Mon Aug 18 20:21:41 2025
InstallationDate: Installed on 2023-11-04 (653 days ago)
InstallationMedia: Ubuntu 23.10.1 "Mantic Minotaur" - Release amd64
(20231016.1)
IwConfig:
lo no wireless extensions.
enp2s0 no wireless extensions.
MachineType: Dell Inc. Inspiron 620s
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.8.0-71-generic
root=/dev/mapper/ubuntu--vg-ubuntu--lv ro quiet splash vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-6.8.0-71-generic N/A
linux-backports-modules-6.8.0-71-generic N/A
linux-firmware 20240318.git3b128b60-0ubuntu2.15
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/12/2011
dmi.bios.release: 4.6
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A00
dmi.board.name: 0GDG8Y
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 3
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: 00
dmi.modalias:
dmi:bvnDellInc.:bvrA00:bd04/12/2011:br4.6:svnDellInc.:pnInspiron620s:pvr00:rvnDellInc.:rn0GDG8Y:rvrA00:cvnDellInc.:ct3:cvr00:skuTobefilledbyO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: Inspiron 620s
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: 00
dmi.sys.vendor: Dell Inc.
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