Laptop won't boot after fresh install Ubuntu 18.04












1














I have an Acer Aspire E5-511 laptop. I am trying to install Ubuntu or Kubuntu, but after I do the updates it won't boot. It boots to a black screen with this message and the fan make noise:



[    2.448950] Problem loading UEFI: db X.509 certificate (-65)  
[ 2.449012] Problem loading UEFI: db X.509 certificate (-65)
[ 2.449111] Couldn't get size: 0x8000000000000000e









share|improve this question





























    1














    I have an Acer Aspire E5-511 laptop. I am trying to install Ubuntu or Kubuntu, but after I do the updates it won't boot. It boots to a black screen with this message and the fan make noise:



    [    2.448950] Problem loading UEFI: db X.509 certificate (-65)  
    [ 2.449012] Problem loading UEFI: db X.509 certificate (-65)
    [ 2.449111] Couldn't get size: 0x8000000000000000e









    share|improve this question



























      1












      1








      1







      I have an Acer Aspire E5-511 laptop. I am trying to install Ubuntu or Kubuntu, but after I do the updates it won't boot. It boots to a black screen with this message and the fan make noise:



      [    2.448950] Problem loading UEFI: db X.509 certificate (-65)  
      [ 2.449012] Problem loading UEFI: db X.509 certificate (-65)
      [ 2.449111] Couldn't get size: 0x8000000000000000e









      share|improve this question















      I have an Acer Aspire E5-511 laptop. I am trying to install Ubuntu or Kubuntu, but after I do the updates it won't boot. It boots to a black screen with this message and the fan make noise:



      [    2.448950] Problem loading UEFI: db X.509 certificate (-65)  
      [ 2.449012] Problem loading UEFI: db X.509 certificate (-65)
      [ 2.449111] Couldn't get size: 0x8000000000000000e






      boot 18.04 kubuntu






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Dec 30 '18 at 12:09









      karel

      57.4k12127146




      57.4k12127146










      asked Dec 30 '18 at 9:34









      Xhoi Kallupi

      215




      215






















          2 Answers
          2






          active

          oldest

          votes


















          1














          Problem is with your secure boot.Restart your system and enter BIOS mode and then disable secure boot.
          To do so you can follow this






          share|improve this answer





















          • secure boot is disabled
            – Xhoi Kallupi
            Dec 30 '18 at 12:27



















          0














          In legacy BIOS compatibility mode the UEFI firmware functions as a standard BIOS instead of UEFI firmware, which improves compatibility with operating systems that weren't designed with UEFI in mind.



          Enter the BIOS/UEFI setup utility when the computer is starting, disable Secure Boot, and enable Legacy/CSM boot mode.



          enter image description here
          disable Secure Boot



          enter image description here
          enable Legacy/CSM boot mode



          source






          share|improve this answer























            Your Answer








            StackExchange.ready(function() {
            var channelOptions = {
            tags: "".split(" "),
            id: "89"
            };
            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
            });


            }
            });














            draft saved

            draft discarded


















            StackExchange.ready(
            function () {
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1105559%2flaptop-wont-boot-after-fresh-install-ubuntu-18-04%23new-answer', 'question_page');
            }
            );

            Post as a guest















            Required, but never shown

























            2 Answers
            2






            active

            oldest

            votes








            2 Answers
            2






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            1














            Problem is with your secure boot.Restart your system and enter BIOS mode and then disable secure boot.
            To do so you can follow this






            share|improve this answer





















            • secure boot is disabled
              – Xhoi Kallupi
              Dec 30 '18 at 12:27
















            1














            Problem is with your secure boot.Restart your system and enter BIOS mode and then disable secure boot.
            To do so you can follow this






            share|improve this answer





















            • secure boot is disabled
              – Xhoi Kallupi
              Dec 30 '18 at 12:27














            1












            1








            1






            Problem is with your secure boot.Restart your system and enter BIOS mode and then disable secure boot.
            To do so you can follow this






            share|improve this answer












            Problem is with your secure boot.Restart your system and enter BIOS mode and then disable secure boot.
            To do so you can follow this







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered Dec 30 '18 at 11:09









            cloud.009

            866




            866












            • secure boot is disabled
              – Xhoi Kallupi
              Dec 30 '18 at 12:27


















            • secure boot is disabled
              – Xhoi Kallupi
              Dec 30 '18 at 12:27
















            secure boot is disabled
            – Xhoi Kallupi
            Dec 30 '18 at 12:27




            secure boot is disabled
            – Xhoi Kallupi
            Dec 30 '18 at 12:27













            0














            In legacy BIOS compatibility mode the UEFI firmware functions as a standard BIOS instead of UEFI firmware, which improves compatibility with operating systems that weren't designed with UEFI in mind.



            Enter the BIOS/UEFI setup utility when the computer is starting, disable Secure Boot, and enable Legacy/CSM boot mode.



            enter image description here
            disable Secure Boot



            enter image description here
            enable Legacy/CSM boot mode



            source






            share|improve this answer




























              0














              In legacy BIOS compatibility mode the UEFI firmware functions as a standard BIOS instead of UEFI firmware, which improves compatibility with operating systems that weren't designed with UEFI in mind.



              Enter the BIOS/UEFI setup utility when the computer is starting, disable Secure Boot, and enable Legacy/CSM boot mode.



              enter image description here
              disable Secure Boot



              enter image description here
              enable Legacy/CSM boot mode



              source






              share|improve this answer


























                0












                0








                0






                In legacy BIOS compatibility mode the UEFI firmware functions as a standard BIOS instead of UEFI firmware, which improves compatibility with operating systems that weren't designed with UEFI in mind.



                Enter the BIOS/UEFI setup utility when the computer is starting, disable Secure Boot, and enable Legacy/CSM boot mode.



                enter image description here
                disable Secure Boot



                enter image description here
                enable Legacy/CSM boot mode



                source






                share|improve this answer














                In legacy BIOS compatibility mode the UEFI firmware functions as a standard BIOS instead of UEFI firmware, which improves compatibility with operating systems that weren't designed with UEFI in mind.



                Enter the BIOS/UEFI setup utility when the computer is starting, disable Secure Boot, and enable Legacy/CSM boot mode.



                enter image description here
                disable Secure Boot



                enter image description here
                enable Legacy/CSM boot mode



                source







                share|improve this answer














                share|improve this answer



                share|improve this answer








                edited Dec 31 '18 at 12:24

























                answered Dec 30 '18 at 11:58









                karel

                57.4k12127146




                57.4k12127146






























                    draft saved

                    draft discarded




















































                    Thanks for contributing an answer to Ask Ubuntu!


                    • 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.





                    Some of your past answers have not been well-received, and you're in danger of being blocked from answering.


                    Please pay close attention to the following guidance:


                    • 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.




                    draft saved


                    draft discarded














                    StackExchange.ready(
                    function () {
                    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1105559%2flaptop-wont-boot-after-fresh-install-ubuntu-18-04%23new-answer', 'question_page');
                    }
                    );

                    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







                    Popular posts from this blog

                    Human spaceflight

                    Can not write log (Is /dev/pts mounted?) - openpty in Ubuntu-on-Windows?

                    張江高科駅