On 19 Dec 2024 at 20:18, Jeffrey Walton wrote: From: Jeffrey Walton <noloader@xxxxxxxxx> Date sent: Thu, 19 Dec 2024 20:18:53 -0500 Subject: Re: VirtualBox no longer working? Loads but gets error message. To: mikes@xxxxxxxx, Community support for Fedora users <users@xxxxxxxxxxxxxxxxxxxxxxx> Send reply to: noloader@xxxxxxxxx, Community support for Fedora users <users@xxxxxxxxxxxxxxxxxxxxxxx> > On Thu, Dec 19, 2024 at 7:00 PM Michael D. Setzer II via users > <users@xxxxxxxxxxxxxxxxxxxxxxx> wrote: > > > > On 20 Dec 2024 at 9:33, Michael D. Setzer II via user wrote: > > [...] > > > Used it a couple weeks ago, but now get this error message went > > > trying to start. > > > > > > VirtualBox can't operate in VMX root mode. > > > Please disable the KVM kernel extension, recompile your kernel > > > and reboot. > > > (VERR_VMX_IN_VMX_ROOT_MODE). > > > > > > Found a link that talks about fixing on Ubuntu, but options don't > > > seem to exist on Fedora 40. > > > > > > Don't use KVM. Looked at removing kvm, but it showed it would > > > also remove 112 dependency files so opted not to do that? > > > > > > Any solutions? > > > > Did a test. If I reboot and select 6.11.11 kernel then VirtualBox > > works fine, but using the 6.12.4 kernel it fails with error? > > > > So, know virtual box images are not issues, but something with the > > 6.12.4 kernel? > > This used to happen to me on occasion when a new kernel was released. > I found the problem was video drivers. VirtualBox would fail to load > until 6.12 video drivers showed up. Once the new video drivers > arrived, DKMS would rebuild the VirtualBox driver for 6.12. (NVIDIA or > AMD was the holdup for the video drivers for the newer kernel). > > I don't recall if I received the same error as you -- the > VERR_VMX_IN_VMX_ROOT_MODE one. However, I recall the machine would > fail to boot. > > My solution was to switch to QEMU/KVM. The kernel folks maintain the > KVM drivers, so they are always up to date. > > Jeff > -- Ran the akmods to create the file akmods Checking kmods exist for 6.12.4-100.fc40.x86_64 [ OK ] Rebooted and still get the QEMU/KVM error. Have used VirtualBox for atleast 20 years I believe. Haven't tired KVM, so not sure how hard or complex it is to do conversion. > _______________________________________________ > users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx > To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx > Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines > List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx > Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue +------------------------------------------------------------+ Michael D. Setzer II - Computer Science Instructor (Retired) mailto:mikes@xxxxxxxx mailto:msetzerii@xxxxxxxxx mailto:msetzerii@xxxxxxx Guam - Where America's Day Begins G4L Disk Imaging Project maintainer http://sourceforge.net/projects/g4l/ +------------------------------------------------------------+ -- _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
