It seems like parallels or ubuntu f'ed it up by changing the gcc version. I was unable to install the tools and got the following error: Started installation of Parallels Guest Tools version '19.2.1.54832' modprobe: FATAL: Module prl_tg not found in directory /lib/modules/6.5.0-21-generic sudo /media/username/Parallels Tools/installer/install-cli.sh Mo 26 Feb 2024 14:32:41 CET Start installation or upgrade of Guest Tools warning: the compiler differs from the one used to build the kernel The kernel was built by: x86_64-linux-gnu-gcc-12 (Ubuntu 12.3.0-1ubuntu1~22.04) 12.3.0 You are using: cc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0 cc: error: unrecognized command-line option '-ftrivial-auto-var-init=zero' make[4]: *** [scripts/Makefile.build:251: /usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg/prltg.o] Error 1 make[3]: *** [/usr/src/linux-headers-6.5.0-21-generic/Makefile:2039: /usr/lib/parallels-tools/kmods/prl_tg/Toolgate/Guest/Linux/prl_tg] Error 2 make[2]: *** [Makefile:234: __sub-make] Error 2 make[1]: *** [Makefile:44: prl_tg] Error 2 make: *** [Makefile.kmods:54: compile] Error 2 Error: could not build kernel modules modprobe: FATAL: Module prl_tg not found in directory /lib/modules/6.5.0-21-generic modprobe: FATAL: Module prl_tg not found in directory /lib/modules/6.5.0-21-generic Error: failed to install Parallels Guest Tools! To fix the issue: sudo apt install --reinstall gcc-12 sudo ln -s -f /usr/bin/gcc-12 /usr/bin/gcc
