DKMS make.log for v4l2loopback-0.13.2 for kernel 6.15.2-061502-generic (x86_64)
Di 12. Aug 14:20:18 CEST 2025
++++++ To sign the module, you must set KBUILD_SIGN_KEY/KBUILD_SIGN_CERT to
point to the signing key/certificate!
++++++ For your convenience, we try to read these variables as
'mok_signing_key' resp. 'mok_certificate' from /etc/dkms/framework.conf
++++++ If your certificate requires a password, pass it via the KBUILD_SIGN_PIN
env-var!
++++++ E.g. using 'export KBUILD_SIGN_PIN; read -s -p "Passphrase for signing
key : " KBUILD_SIGN_PIN; sudo --preserve-env=KBUILD_SIGN_PIN make sign'
Building v4l2-loopback driver...
make -C /lib/modules/6.15.2-061502-generic/build
M=/var/lib/dkms/v4l2loopback/0.13.2/build KCPPFLAGS="" modules
make[1]: Verzeichnis „/usr/src/linux-headers-6.15.2-061502-generic“ wird
betreten
make[2]: Verzeichnis „/var/lib/dkms/v4l2loopback/0.13.2/build“ wird betreten
warning: the compiler differs from the one used to build the kernel
The kernel was built by: x86_64-linux-gnu-gcc-14 (Ubuntu 14.2.0-23ubuntu1)
14.2.0
You are using: gcc-14 (Ubuntu 14.2.0-19ubuntu2) 14.2.0
CC [M] v4l2loopback.o
v4l2loopback.c: In function ‘buffer_written’:
v4l2loopback.c:1686:9: error: implicit declaration of function ‘del_timer_sync’
[-Wimplicit-function-declaration]
1686 | del_timer_sync(&dev->sustain_timer);
| ^~~~~~~~~~~~~~
make[4]: ***
[/usr/src/linux-headers-6.15.2-061502-generic/scripts/Makefile.build:203:
v4l2loopback.o] Fehler 1
make[3]: *** [/usr/src/linux-headers-6.15.2-061502-generic/Makefile:2010: .]
Fehler 2
make[2]: *** [/usr/src/linux-headers-6.15.2-061502-generic/Makefile:248:
__sub-make] Fehler 2
make[2]: Verzeichnis „/var/lib/dkms/v4l2loopback/0.13.2/build“ wird verlassen
make[1]: *** [Makefile:248: __sub-make] Fehler 2
make[1]: Verzeichnis „/usr/src/linux-headers-6.15.2-061502-generic“ wird
verlassen
make: *** [Makefile:53: v4l2loopback.ko] Fehler 2
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https://bugs.launchpad.net/bugs/1024988
Title:
package v4l2loopback-dkms 0.4.1-1 failed to install/upgrade:
subprocess installed post-installation script returned error exit
status 6
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/v4l2loopback/+bug/1024988/+subscriptions
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