*** This bug is a duplicate of bug 2136499 ***
https://bugs.launchpad.net/bugs/2136499
Public bug reported:
DKMS make.log for v4l2loopback-0.12.7 for kernel 6.17.0-14-generic (x86_64)
Tue Mar 24 09:48:35 AM WIB 2026
Building v4l2-loopback driver...
make -C /lib/modules/6.17.0-14-generic/build
M=/var/lib/dkms/v4l2loopback/0.12.7/build modules
make[1]: Entering directory '/usr/src/linux-headers-6.17.0-14-generic'
make[2]: Entering directory '/var/lib/dkms/v4l2loopback/0.12.7/build'
warning: the compiler differs from the one used to build the kernel
The kernel was built by: x86_64-linux-gnu-gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04)
13.3.0
You are using: gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0
CC [M] v4l2loopback.o
v4l2loopback.c: In function ‘buffer_written’:
v4l2loopback.c:1583:9: error: implicit declaration of function ‘del_timer_sync’
[-Werror=implicit-function-declaration]
1583 | del_timer_sync(&dev->sustain_timer);
v4l2loopback.c: In function ‘v4l2_loopback_init’:
v4l2loopback.c:2481:9: error: implicit declaration of function ‘setup_timer’
[-Werror=implicit-function-declaration]
2481 | setup_timer(&dev->sustain_timer, sustain_timer_clb, nr);
cc1: some warnings being treated as errors
make[4]: ***
[/usr/src/linux-headers-6.17.0-14-generic/scripts/Makefile.build:287:
v4l2loopback.o] Error 1
make[3]: *** [/usr/src/linux-headers-6.17.0-14-generic/Makefile:2016: .] Error 2
make[2]: *** [/usr/src/linux-headers-6.17.0-14-generic/Makefile:248:
__sub-make] Error 2
make[2]: Leaving directory '/var/lib/dkms/v4l2loopback/0.12.7/build'
make[1]: *** [Makefile:248: __sub-make] Error 2
make[1]: Leaving directory '/usr/src/linux-headers-6.17.0-14-generic'
make: *** [Makefile:43: v4l2loopback.ko] Error 2
ProblemType: Package
DistroRelease: Ubuntu 24.04
Package: virtualbox-dkms 7.0.16-dfsg-2ubuntu1.1
ProcVersionSignature: Ubuntu 6.17.0-14.14~24.04.1-generic 6.17.9
Uname: Linux 6.17.0-14-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
CasperMD5CheckResult: pass
DKMSKernelVersion: 6.17.0-14-generic
Date: Tue Mar 24 09:48:40 2026
InstallationDate: Installed on 2025-08-27 (210 days ago)
InstallationMedia: Ubuntu 24.04.2 LTS "Noble Numbat" - Release amd64 (20250215)
PackageVersion: 7.0.16-dfsg-2ubuntu1.1
Python3Details: /usr/bin/python3.12, Python 3.12.3, python3-minimal,
3.12.3-0ubuntu2.1
PythonDetails: N/A
RelatedPackageVersions:
dpkg 1.22.6ubuntu6.5
apt 2.8.3
SourcePackage: virtualbox
Title: virtualbox-dkms 7.0.16-dfsg-2ubuntu1.1: virtualbox kernel module failed
to build
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: virtualbox (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-package noble
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https://bugs.launchpad.net/bugs/2146409
Title:
virtualbox-dkms 7.0.16-dfsg-2ubuntu1.1: virtualbox kernel module
failed to build
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