id,summary,reporter,owner,description,type,status,component,version,resolution,keywords,cc,guest,host 11646,"""Enable PAE"" CPU option always on",chrisb,,"Host: Dell Opteron 1212 running Ubuntu and virtualbox 4.1.12. Clear the checkbox Settings>System>Processor>Enable PAE/NX. Boot Ubuntu VM. ""cat /proc/cpuinfo|grep pae"" shows that the pae flag is still present in the VM. Bug: when the checkbox is clear, PAE should not be exposed to the virtual machine. VBox.log shows that ""EnablePAE = .. 0"" but later ""CPUMSetGuestCpuIdFeature: Enabled PAE"": {{{ 00:00:01.355 EnablePAE = 0x0000000000000000 (0) 00:00:01.366 PAE - Physical Address Extension = 0 (1) 00:00:01.366 PAE - Physical Address Extension = 0 (1) 00:00:01.368 Debug: HCPhysInterPD=00000000b26a2000 HCPhysInterPaePDPT=00000000a3c4d000 HCPhysInterPaePML4=00000000b05b1000 00:00:01.368 Debug: apInterPTs={00000000a3894000,0000000086f13000} apInterPaePTs={000000010a9ab000,000000010a99e000} apInterPaePDs={000000010a99f000,000000010a990000,000000010a991000,000000010a97a000} pInterPaePDPT64=00000000af3a6000 00:00:01.740 CPUMSetGuestCpuIdFeature: Enabled PAE }}}",defect,closed,other,VirtualBox 4.1.12,duplicate,,,Linux,Linux