Christopher Juckins

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rocky_linux_9_migration_notes

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rocky_linux_9_migration_notes [2025/06/25 18:49] – juckinsrocky_linux_9_migration_notes [2025/08/11 11:45] (current) – juckins
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 ''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).'' ''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).''
  
 +Using a [[https://www.google.com/search?q=VirtualBox+can%27t+operate+in+VMX+root+mode.+Please+disable+the+KVM+kernel+extension%2C+recompile+your+kernel+and+reboot+(VERR_VMX_IN_VMX_ROOT_MODE).&oq=VirtualBox+can%27t+operate+in+VMX+root+mode.+Please+disable+the+KVM+kernel+extension%2C+recompile+your+kernel+and+reboot+(VERR_VMX_IN_VMX_ROOT_MODE).&gs_lcrp=EgZjaHJvbWUyBggAEEUYOTIHCAEQIRiPAjIHCAIQIRiPAtIBCTYzNTVqMGoxNagCCLACAfEFCfv4GIhBFt3xBQn7-BiIQRbd&sourceid=chrome&ie=UTF-8|Google Search]], the temporary fix was to do the following {{ :0:virtualbox-vmx-problem.pdf|see PDF}}:
  
 +  # lsmod | grep kvm
 +  
 +Verified the following output:
 +
 +  kvm_intel             446464  0
 +  kvm                  1404928  1 kvm_intel
 +
 +Disabled the KVM temporarily:
 +
 +  # modprobe -r kvm_intel
 +  
 +Verified nothing was returned with the following command:
 +  
 +  # lsmod | grep kvm
 +  
 +Was then able to start up the VMs using the VirtualBox GUI successfully.
 +
 +Need to reboot machine and see if fix stays.  Otherwise, the permanent fix is the following:
 +
 +  Create a file named kvm-blacklist.conf in /etc/modprobe.d/
 +
 +Add the blacklist entry: Add the appropriate line to the file: 
 +
 +  blacklist kvm_intel 
 +  
 +-or-
 +  
 +  blacklist kvm_amd 
 +
 +Reboot to apply the changes. 
  
 __2024-11-25__ __2024-11-25__
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     * Right-click top panel > Add New Items     * Right-click top panel > Add New Items
     * Add CPU Graph, Weather Info     * Add CPU Graph, Weather Info
 +  * Adjust keyboard repeat delay and repeat speed (Applications > Settings > Keyboard)
 +    * Repeat delay: 500
 +    * Repeat speed: 65
   * Adjust top and bottom panels   * Adjust top and bottom panels
     * Reverse positions     * Reverse positions
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 __Post Installation__ __Post Installation__
  
 +  * Possibly want to adjust the grub timeout from the default of 5 seconds to something like 10 or 12 seconds to be sure the menu appears when the machine boots up.
 +    * As root, modify ''/etc/default/grub'' by setting GRUB_TIMEOUT to the desired value.
 +    * As root, run ''grub2-mkconfig -o /boot/grub2/grub.cfg''
 +    * Reboot to test.
   * In /root/bin on old/new machines, see final_sync_for_new_server.txt   * In /root/bin on old/new machines, see final_sync_for_new_server.txt
   * As root, use ''alpine'' to check email from crons that indicate any errors or failures   * As root, use ''alpine'' to check email from crons that indicate any errors or failures
rocky_linux_9_migration_notes.1750891768.txt.gz · Last modified: by juckins