[Bug 1906913] [NEW] IRQ conflict between Ethernet and USB with linux 5.4.0-56-lowlatency kernel

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You have been subscribed to a public bug by Ross Gammon (rosco2):

Package: linux-image-5.4.0.56.lowlatency / Focal Ubuntu Studio 20.04

WLan is working PCI Ethernet not.

[   11.223573] genirq: Flags mismatch irq 18. 00010080 (enp3s1) vs. 00002080 (uhci_hcd:usb4)
[   11.299519] genirq: Flags mismatch irq 16. 00010080 (ens32) vs. 00002080 (uhci_hcd:usb5)

Maybe this report can helpfull for bug 1906655. sounds similar for other kernel.
--- 
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.13
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC2:  oliver     2033 F.... pulseaudio
 /dev/snd/controlC0:  oliver     2033 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2020-04-01 (247 days ago)
InstallationMedia: Ubuntu-Studio 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
MachineType: ECS G31T-M7
NonfreeKernelModules: nvidia_modeset nvidia
Package: linux (not installed)
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-56-lowlatency root=UUID=d918f4d9-9814-4dbd-a547-02a0ddc59f12 ro quiet splash vt.handoff=1
ProcVersionSignature: Ubuntu 5.4.0-56.62-lowlatency 5.4.73
RelatedPackageVersions:
 linux-restricted-modules-5.4.0-56-lowlatency N/A
 linux-backports-modules-5.4.0-56-lowlatency  N/A
 linux-firmware                               1.187.4
RfKill:
 
StagingDrivers: r8712u
Tags:  focal staging
Uname: Linux 5.4.0-56-lowlatency x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm audio cdrom dialout dip lp lpadmin plugdev sambashare saned scanner sudo video
_MarkForUpload: True
dmi.bios.date: 03/01/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 080014
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: G31T-M7
dmi.board.vendor: ECS
dmi.board.version: 1.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: ECS
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080014:bd03/01/2010:svnECS:pnG31T-M7:pvr1.0:rvnECS:rnG31T-M7:rvr1.0:cvnECS:ct3:cvr1.0:
dmi.product.family: To Be Filled By O.E.M.
dmi.product.name: G31T-M7
dmi.product.sku: To Be Filled By O.E.M.
dmi.product.version: 1.0
dmi.sys.vendor: ECS

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Confirmed


** Tags: apport-collected focal staging
-- 
IRQ conflict between Ethernet and USB with linux 5.4.0-56-lowlatency kernel
https://bugs.launchpad.net/bugs/1906913
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