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









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    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






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      share|improve this question













      share|improve this question




      share|improve this question








      edited Dec 30 '18 at 12:09









      karel

      57.8k12128146




      57.8k12128146










      asked Dec 30 '18 at 9:34









      Xhoi KallupiXhoi 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

























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            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.009cloud.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









                karelkarel

                57.8k12128146




                57.8k12128146






























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