Ubuntu VM won't run when assigned more than one CPU in Oracle VirtualBox
I've got a 64-bit ubuntu 16.04 VM running in Oracle VirtualBox 5.2.0 on a Windows 7 Pro host. The host has 12 physical cores (24 logical) so naturally I want to run my VM with more than one core!
The VM runs fine when assigned 1 CPU but it simply won't start if I assign it 2 or more CPUs. Note Oracle VirtualBox is happy to let me assign more than one CPU in its System > Processor settings. But when I try to start the VM I see ubuntu's GRUB menu, but then as soon as ubuntu starts booting the screen goes black with a flashing cursor in the top-left. And then nothing appears to happen... I can't see anything obvious in VBox.log for the VM.
Does anybody know how I can get the VM running with > 1 CPU?
ubuntu virtualbox virtual-machine cpu
asked Dec 7 '17 at 13:36
snarksnark
15818
add a comment |
I've got a 64-bit ubuntu 16.04 VM running in Oracle VirtualBox 5.2.0 on a Windows 7 Pro host. The host has 12 physical cores (24 logical) so naturally I want to run my VM with more than one core!
The VM runs fine when assigned 1 CPU but it simply won't start if I assign it 2 or more CPUs. Note Oracle VirtualBox is happy to let me assign more than one CPU in its System > Processor settings. But when I try to start the VM I see ubuntu's GRUB menu, but then as soon as ubuntu starts booting the screen goes black with a flashing cursor in the top-left. And then nothing appears to happen... I can't see anything obvious in VBox.log for the VM.
Does anybody know how I can get the VM running with > 1 CPU?
ubuntu virtualbox virtual-machine cpu
asked Dec 7 '17 at 13:36
snarksnark
15818
add a comment |
I've got a 64-bit ubuntu 16.04 VM running in Oracle VirtualBox 5.2.0 on a Windows 7 Pro host. The host has 12 physical cores (24 logical) so naturally I want to run my VM with more than one core!
The VM runs fine when assigned 1 CPU but it simply won't start if I assign it 2 or more CPUs. Note Oracle VirtualBox is happy to let me assign more than one CPU in its System > Processor settings. But when I try to start the VM I see ubuntu's GRUB menu, but then as soon as ubuntu starts booting the screen goes black with a flashing cursor in the top-left. And then nothing appears to happen... I can't see anything obvious in VBox.log for the VM.
Does anybody know how I can get the VM running with > 1 CPU?
ubuntu virtualbox virtual-machine cpu
asked Dec 7 '17 at 13:36
snarksnark
15818
I've got a 64-bit ubuntu 16.04 VM running in Oracle VirtualBox 5.2.0 on a Windows 7 Pro host. The host has 12 physical cores (24 logical) so naturally I want to run my VM with more than one core!
The VM runs fine when assigned 1 CPU but it simply won't start if I assign it 2 or more CPUs. Note Oracle VirtualBox is happy to let me assign more than one CPU in its System > Processor settings. But when I try to start the VM I see ubuntu's GRUB menu, but then as soon as ubuntu starts booting the screen goes black with a flashing cursor in the top-left. And then nothing appears to happen... I can't see anything obvious in VBox.log for the VM.
Does anybody know how I can get the VM running with > 1 CPU?
ubuntu virtualbox virtual-machine cpu
ubuntu virtualbox virtual-machine cpu
asked Dec 7 '17 at 13:36
snarksnark
15818
asked Dec 7 '17 at 13:36
snarksnark
15818
asked Dec 7 '17 at 13:36
snarksnark
15818
asked Dec 7 '17 at 13:36
snarksnark
15818
asked Dec 7 '17 at 13:36
snarksnark
15818
15818
add a comment |
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "3"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fsuperuser.com%2fquestions%2f1275113%2fubuntu-vm-wont-run-when-assigned-more-than-one-cpu-in-oracle-virtualbox%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
Thanks for contributing an answer to Super User!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fsuperuser.com%2fquestions%2f1275113%2fubuntu-vm-wont-run-when-assigned-more-than-one-cpu-in-oracle-virtualbox%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
