Managed to reproduce it: 1) switched to nvidia; 2) worked for a while with it for a while with 5.3.0-19-generic; 3) got a kernel update to 5.3.0-23-generic; 4) switched to intel; 5) reproduced the problem.
What I found is: 1) /lib/modprobe.d/blacklist-nvidia.conf gets created if you switch to "intel"; 2) blacklist-nvidia.conf wasn't in initramfs for the new kernel: lsinitramfs initrd.img-5.3.0-19-generic | grep blacklist-nvidia.conf ; echo $? usr/lib/modprobe.d/blacklist-nvidia.conf 0 lsinitramfs initrd.img-5.3.0-23-generic | grep blacklist-nvidia.conf ; echo $? 1 3) running `updateinitramfs -u` fixes it. >From what I can see: * updateinitramfs works correctly and the blacklist file gets created correctly as well so long as "intel" is selected; * If a kernel is upgraded while the profile is set to "nvidia" though, /lib/modprobe.d/blacklist-nvidia.conf is (correctly) not there so any initramfs generation or updates do not include it; * So when `prime-select intel` is done on a system that got upgraded with `prime-select query -> nvidia`, there is nothing to update initramfs. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nvidia-prime in Ubuntu. https://bugs.launchpad.net/bugs/1848326 Title: [cosmic+] error booting with prime-select intel: prime-select does not update initramfs to blacklist nvidia modules Status in nvidia-prime package in Ubuntu: Confirmed Bug description: when I try to boot with the iGPU selected, DE won't boot, with nvidia selected, everithing is fine. I tried uninstalling nvidia driver and it allowed my to access without any problems and intel is working fine ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: nvidia-prime 0.8.13 ProcVersionSignature: Ubuntu 5.3.0-18.19-generic 5.3.1 Uname: Linux 5.3.0-18-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu8 Architecture: amd64 CurrentDesktop: KDE Date: Wed Oct 16 12:41:26 2019 Dependencies: InstallationDate: Installed on 2019-09-25 (20 days ago) InstallationMedia: Kubuntu 19.10 "Eoan Ermine" - Beta amd64 (20190925) PackageArchitecture: all SourcePackage: nvidia-prime UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1848326/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
