Testing was done with the Ubuntu 22.04.1 ISO, booted off disk, no persistence. The Nvidia GPU was an RTX 3080 (mobile). The gcc-12 and the generic hwe packages were installed, then the Nvidia driver 535 selected in the Software & Updates/Additional Drivers tab. Clicked the apply button, and the nvidia.ko module(s) build successfully using gcc-12. The build was done while running the default 5.15 kernel, and succeeded whether or not gcc-11 was even present.
Steps Taken 1)Boot the Ubuntu 22.04.1 Desktop ISO. The default kernel used is 5.15. 2)Set up wireiess. 3)In Software & Updates, add the universe and multiverse repositories. Click on "update" button when presented. 4)sudo apt update (Just in case) 5)sudo apt install gcc-12 build-essential (Note, the Nvidia module will still build without the build-essential package, and its /bin/gcc link. ) 6)Install the generic hwe packages. Note, using the hwe packages without "generic" in their names immediately failed on the Nvidia module creation step. This installed the 6.5.0-15 kernel. sudo apt install linux-generic-hwe-22.04 linux-headers-generic-hwe-22.04 linux-image-generic-hwe-22.04 7)In Software & Updates, under the Additional Drivers tab, select Nvidia 535. Click on the apply button, and watch the progress bar. No errors should occur. 8)Examine the nvidia.ko module created. strings /lib/modules/6.5.0-15-generic/kernel/nvidia-535/nvidia.ko |grep gcc The output should include that gcc 12.3 was used. (Whether or not /bin/gcc ->gcc-11 is even present.) Did not try a reboot, since persistence was not even used. The test was quick since everything is in memory. It looks like just the presence of gcc-12 will solve this problem, and that may be addressed by adding a dependency on it to some (hwe, kernel ?) package. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to dkms in Ubuntu. https://bugs.launchpad.net/bugs/2051457 Title: Jammy 22.04.3 gcc compiler no longer builds modules for 6.5.0 kernel series Status in dkms package in Ubuntu: New Status in gcc-defaults package in Ubuntu: Won't Fix Bug description: Since Jammy went to the 6.5.0 kernel series, that kernel series was compiled with gcc-12. The previous 6.2.0 series kernels were compiled with gcc-11. The current version of gcc in jammy is 11.4. Many NVidia drivers, wifi drivers, VirtualBox (from our Repo), etc fail to build the modules, because of a gcc compiler version mismatch between what the current running kernel was built by, and the module being built. I recognized this while helping Users with NVidia driver compile errors on the forum, and came up with this work-around for them: https://ubuntuforums.org/showthread.php?t=2494273&p=14175164#post14175164 Summary: Install gcc-12 & g++-12 on 22.04.3 and use it as the compiler. Since then, this work-around has helped to resolve problems with running the 6.5.0 series kernels and building modules for other applications and hardware drivers: VirtualBox, WiFi Drivers, etc. for use with the 6.5.0 series. I have run this for over a month as my default with no ill affects. I have continued to recommend this work-around to many user to solve their problems... *** I think it is time to look at pushing through gcc-12 as the default compiler for 22.04.3 through the normal updates channel. ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: gcc 4:11.2.0-1ubuntu1 ProcVersionSignature: Ubuntu 6.5.0-14.14~22.04.1-generic 6.5.3 Uname: Linux 6.5.0-14-generic x86_64 NonfreeKernelModules: zfs nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu82.5 Architecture: amd64 CasperMD5CheckResult: pass CloudArchitecture: x86_64 CloudID: none CloudName: none CloudPlatform: none CloudSubPlatform: config CurrentDesktop: GNOME Date: Sun Jan 28 08:23:37 2024 InstallationDate: Installed on 2022-09-19 (496 days ago) InstallationMedia: Ubuntu-Server 22.04.1 LTS "Jammy Jellyfish" - Release amd64 (20220809) SourcePackage: gcc-defaults UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dkms/+bug/2051457/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
