insmod: ERROR: could not insert module fl2000.ko: Invalid module format

[skrollocky]

Good afternoon I apologize for the translation, I don’t know English perfectly, so I’m writing through Google translator.

I use Kubuntu 23.04
Kernel version linux-headers-6.5.0-17-generic

I recently purchased an FL2000 adapter and tried to compile a driver for my kernel from source code. The build was successful without errors, but when adding the kernel module

insmod fl2000.ko ​​

an error occurred: insmod: ERROR: could not insert module fl2000.ko: Invalid module format

I also tried to build the driver from the source from the repository (https://github.com/FrescoLogic/FL2000)
Which also won’t lead to success
Please help in this situation, you can also contact me via telegram @Scrollocky, thanks in advance!

[skrollocky]

lsusb
Bus 004 Device 002: ID 1d5c:2000 Fresco Logic FL2000/FL2000DX VGA/DVI/HDMI Adapter

[skrollocky]

I downloaded the source and launched everything successfully, along the way I also installed the error Skipping generation BTF xxx. due to the unavailability of vmlinux, I solved it this way

successful installation of gnomes
cp /sys/kernel/btf/vmlinux /usr/lib/modules/`uname -r`/build/

[skrollocky]

Now it remains to solve the issue in the constant screen measurement mode... is it possible to solve this problem somehow?

[ftoledo]

hi @skrollocky i copy the vmlinux file and get another error:
(i'm building on debian 12 with backport 6.5 kernel)

ragnarok@ragnarok:~/src/fl2000_drm-rhgndf$ make
make CHECK="/usr/bin/sparse" -C /lib/modules/6.5.0-0.deb12.4-amd64/build M=/home/ragnarok/src/fl2000_drm-rhgndf modules
make[1]: se entra en el directorio '/usr/src/linux-headers-6.5.0-0.deb12.4-amd64'
  CC [M]  /home/ragnarok/src/fl2000_drm-rhgndf/fl2000_drv.o
  CC [M]  /home/ragnarok/src/fl2000_drm-rhgndf/fl2000_registers.o
  CC [M]  /home/ragnarok/src/fl2000_drm-rhgndf/fl2000_interrupt.o
  CC [M]  /home/ragnarok/src/fl2000_drm-rhgndf/fl2000_streaming.o
  CC [M]  /home/ragnarok/src/fl2000_drm-rhgndf/fl2000_connector.o
  CC [M]  /home/ragnarok/src/fl2000_drm-rhgndf/fl2000_i2c.o
  CC [M]  /home/ragnarok/src/fl2000_drm-rhgndf/fl2000_drm.o
  LD [M]  /home/ragnarok/src/fl2000_drm-rhgndf/fl2000.o
  MODPOST /home/ragnarok/src/fl2000_drm-rhgndf/Module.symvers
  CC [M]  /home/ragnarok/src/fl2000_drm-rhgndf/fl2000.mod.o
  LD [M]  /home/ragnarok/src/fl2000_drm-rhgndf/fl2000.ko
  BTF [M] /home/ragnarok/src/fl2000_drm-rhgndf/fl2000.ko
/bin/sh: 1: ./tools/bpf/resolve_btfids/resolve_btfids: not found
make[3]: *** [/usr/src/linux-headers-6.5.0-0.deb12.4-common/scripts/Makefile.modfinal:63: /home/ragnarok/src/fl2000_drm-rhgndf/fl2000.ko] Error 127
make[3]: *** Se borra el archivo '/home/ragnarok/src/fl2000_drm-rhgndf/fl2000.ko'
make[2]: *** [/usr/src/linux-headers-6.5.0-0.deb12.4-common/Makefile:1977: modules] Error 2
make[1]: *** [/usr/src/linux-headers-6.5.0-0.deb12.4-common/Makefile:246: __sub-make] Error 2
make[1]: se sale del directorio '/usr/src/linux-headers-6.5.0-0.deb12.4-amd64'
make: *** [Makefile:18: modules] Error 2