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vmlinuz-4.18.12-041812-generic has invalid signature


Kernel loading error, `ls` at grub command line does not do anythingUpdates fail due to “/etc/default/grub: splash”: not found” error kernel did not upgrade between 12.04->12.10->13.04cannot upgrade kernel and mysql-server after dist upgradeLinux Headers not upgrading. It says “no space” when I have lotsWhy there is an update-initramfs error when removing a kernel by dpkg?Errors every time I use 'apt install' because of old kernelsKernel 4.4.0-109-generic fails to boot but 4.4.0-104-generic works fineUnable to update kernel (or anything), dpkg returns error 1Difference between kernel 4.15.0-42-generic and 4.15.0-29-generic in Ubuntu 18.04UKUU new kernel error: you need to load the kernel first













4















I upgraded my kernel today with ukuu, and since then I cant boot because i'm getting this errors:



error: /boot/vmlinuz-4.18.12-041812-generic has invalid signature
error: you need to load the kernel first


I have dual boot with windows 10 and ubuntu 18.10 (Upgraded today)



Update: I managed to boot to older kernel that i chose from "Advanced
options for Ubuntu" in grub



But I need to upgrade my kernel and if I do that I still get the same problem...










share|improve this question




























    4















    I upgraded my kernel today with ukuu, and since then I cant boot because i'm getting this errors:



    error: /boot/vmlinuz-4.18.12-041812-generic has invalid signature
    error: you need to load the kernel first


    I have dual boot with windows 10 and ubuntu 18.10 (Upgraded today)



    Update: I managed to boot to older kernel that i chose from "Advanced
    options for Ubuntu" in grub



    But I need to upgrade my kernel and if I do that I still get the same problem...










    share|improve this question


























      4












      4








      4








      I upgraded my kernel today with ukuu, and since then I cant boot because i'm getting this errors:



      error: /boot/vmlinuz-4.18.12-041812-generic has invalid signature
      error: you need to load the kernel first


      I have dual boot with windows 10 and ubuntu 18.10 (Upgraded today)



      Update: I managed to boot to older kernel that i chose from "Advanced
      options for Ubuntu" in grub



      But I need to upgrade my kernel and if I do that I still get the same problem...










      share|improve this question
















      I upgraded my kernel today with ukuu, and since then I cant boot because i'm getting this errors:



      error: /boot/vmlinuz-4.18.12-041812-generic has invalid signature
      error: you need to load the kernel first


      I have dual boot with windows 10 and ubuntu 18.10 (Upgraded today)



      Update: I managed to boot to older kernel that i chose from "Advanced
      options for Ubuntu" in grub



      But I need to upgrade my kernel and if I do that I still get the same problem...







      dual-boot kernel






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Oct 6 '18 at 16:23







      Nadav Shabtai

















      asked Oct 6 '18 at 15:52









      Nadav ShabtaiNadav Shabtai

      6616




      6616




















          2 Answers
          2






          active

          oldest

          votes


















          2














          I solved my problem following this tutorial to sign /boot/vmlinuz file for secure boot, Just notice the last part of the tutorial






          share|improve this answer


















          • 2





            Could you provide please some detailed information about resolving this problem? I have absolutely the same error, but I do not understand what I have to do according to tutorial mentioned.

            – Slon
            Feb 17 at 19:35











          • I don't remember right now, I'll try to help you later this day if its still relevant

            – Nadav Shabtai
            Mar 12 at 9:58











          • It is relevant for me too. I have the same issue

            – Vitalii Diravka
            Mar 25 at 21:41











          • Just found this, I need it too

            – Mitch Talmadge
            Mar 26 at 20:25


















          0














          Instead of signing the kernel in question, I just turned off Secure Boot in the BIOS/UEFI menu of my laptop.



          You usually enter it by pressing a special key during boot, you can usually google the specific one for your device or it might even be shown on screen during boot.






          share|improve this answer























            Your Answer








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            2 Answers
            2






            active

            oldest

            votes








            2 Answers
            2






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            2














            I solved my problem following this tutorial to sign /boot/vmlinuz file for secure boot, Just notice the last part of the tutorial






            share|improve this answer


















            • 2





              Could you provide please some detailed information about resolving this problem? I have absolutely the same error, but I do not understand what I have to do according to tutorial mentioned.

              – Slon
              Feb 17 at 19:35











            • I don't remember right now, I'll try to help you later this day if its still relevant

              – Nadav Shabtai
              Mar 12 at 9:58











            • It is relevant for me too. I have the same issue

              – Vitalii Diravka
              Mar 25 at 21:41











            • Just found this, I need it too

              – Mitch Talmadge
              Mar 26 at 20:25















            2














            I solved my problem following this tutorial to sign /boot/vmlinuz file for secure boot, Just notice the last part of the tutorial






            share|improve this answer


















            • 2





              Could you provide please some detailed information about resolving this problem? I have absolutely the same error, but I do not understand what I have to do according to tutorial mentioned.

              – Slon
              Feb 17 at 19:35











            • I don't remember right now, I'll try to help you later this day if its still relevant

              – Nadav Shabtai
              Mar 12 at 9:58











            • It is relevant for me too. I have the same issue

              – Vitalii Diravka
              Mar 25 at 21:41











            • Just found this, I need it too

              – Mitch Talmadge
              Mar 26 at 20:25













            2












            2








            2







            I solved my problem following this tutorial to sign /boot/vmlinuz file for secure boot, Just notice the last part of the tutorial






            share|improve this answer













            I solved my problem following this tutorial to sign /boot/vmlinuz file for secure boot, Just notice the last part of the tutorial







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered Oct 14 '18 at 7:06









            Nadav ShabtaiNadav Shabtai

            6616




            6616







            • 2





              Could you provide please some detailed information about resolving this problem? I have absolutely the same error, but I do not understand what I have to do according to tutorial mentioned.

              – Slon
              Feb 17 at 19:35











            • I don't remember right now, I'll try to help you later this day if its still relevant

              – Nadav Shabtai
              Mar 12 at 9:58











            • It is relevant for me too. I have the same issue

              – Vitalii Diravka
              Mar 25 at 21:41











            • Just found this, I need it too

              – Mitch Talmadge
              Mar 26 at 20:25












            • 2





              Could you provide please some detailed information about resolving this problem? I have absolutely the same error, but I do not understand what I have to do according to tutorial mentioned.

              – Slon
              Feb 17 at 19:35











            • I don't remember right now, I'll try to help you later this day if its still relevant

              – Nadav Shabtai
              Mar 12 at 9:58











            • It is relevant for me too. I have the same issue

              – Vitalii Diravka
              Mar 25 at 21:41











            • Just found this, I need it too

              – Mitch Talmadge
              Mar 26 at 20:25







            2




            2





            Could you provide please some detailed information about resolving this problem? I have absolutely the same error, but I do not understand what I have to do according to tutorial mentioned.

            – Slon
            Feb 17 at 19:35





            Could you provide please some detailed information about resolving this problem? I have absolutely the same error, but I do not understand what I have to do according to tutorial mentioned.

            – Slon
            Feb 17 at 19:35













            I don't remember right now, I'll try to help you later this day if its still relevant

            – Nadav Shabtai
            Mar 12 at 9:58





            I don't remember right now, I'll try to help you later this day if its still relevant

            – Nadav Shabtai
            Mar 12 at 9:58













            It is relevant for me too. I have the same issue

            – Vitalii Diravka
            Mar 25 at 21:41





            It is relevant for me too. I have the same issue

            – Vitalii Diravka
            Mar 25 at 21:41













            Just found this, I need it too

            – Mitch Talmadge
            Mar 26 at 20:25





            Just found this, I need it too

            – Mitch Talmadge
            Mar 26 at 20:25













            0














            Instead of signing the kernel in question, I just turned off Secure Boot in the BIOS/UEFI menu of my laptop.



            You usually enter it by pressing a special key during boot, you can usually google the specific one for your device or it might even be shown on screen during boot.






            share|improve this answer



























              0














              Instead of signing the kernel in question, I just turned off Secure Boot in the BIOS/UEFI menu of my laptop.



              You usually enter it by pressing a special key during boot, you can usually google the specific one for your device or it might even be shown on screen during boot.






              share|improve this answer

























                0












                0








                0







                Instead of signing the kernel in question, I just turned off Secure Boot in the BIOS/UEFI menu of my laptop.



                You usually enter it by pressing a special key during boot, you can usually google the specific one for your device or it might even be shown on screen during boot.






                share|improve this answer













                Instead of signing the kernel in question, I just turned off Secure Boot in the BIOS/UEFI menu of my laptop.



                You usually enter it by pressing a special key during boot, you can usually google the specific one for your device or it might even be shown on screen during boot.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 1 hour ago









                xjclxjcl

                1394




                1394



























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