[SOLVED] unable to boot after updating from fedora 24 4.7.5-200 to fedora 24 4.7.6-200 - Page 2
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  1. #16
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    Re: unable to boot after updating from fedora 24 4.7.5-200 to fedora 24 4.7.6-200

    I am encountering the same problem in a fully upgraded system.

    Unable to boot into kernel-4.7.6 and now unable to boot into kernel-4.7.7.

    All of your reported symptoms appear the same and unfortunately this includes no log information via journalctl while attempting to boot into kernel-4.7.6 or kernel-4.7.7

    I can still boot into kernel-4.7.5-200.fc.x86_64 ( Graphics are not 100% stable, some flickering especially when resizing windows and sluggish response ) This makes me think that the problem is likely to be associated with AMD / Updated graphics stack.

    Have tried downgrading the efibootmgr which was upgraded with kernel-4.7.6.. but that had no effect.

    If I downgrade xorg to 1.17 and install AMD proprietary driver ( with patch ) on kernel-4.7.5, graphics are stable. ( Obviously this has no effect on booting issue but proves graphics card is O.K. )

    I am running F24 on an Acer Aspire 725-C7Xkk
    AMD C-70 APU with RADEON HD7290 GRAPHICS

  2. #17
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    Re: unable to boot after updating from fedora 24 4.7.5-200 to fedora 24 4.7.6-200

    Hello Myopic
    thank you for this feed back.
    It seems that i'm not the only one in trouble
    i have reported your comment to the redhat bugzilla here : https://bugzilla.redhat.com/show_bug.cgi?id=1384238

    Did you try to debug dracut like this

    Could you tell me how you install kernel 4.7.7 (gnome software ? Terminal ?)

    The thing is that we can not run on 4.7.5 forever. Even if 4.7.6 and 4.7.7 do not seem to bring security updates (if anybody can confirm me ) we will soon run too old kernel if nothing is done...

    Right now i did every tests i can do (thanks for the other user's help), spend a lot to solve this issu.

    I would like to do something but i do not know what to do.....

    regards

  3. #18
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    Re: unable to boot after updating from fedora 24 4.7.5-200 to fedora 24 4.7.6-200

    That suggest that initramd is not being loaded at all. Found the previous thread: http://forums.fedoraforum.org/showthread.php?t=310467

    So the next step would be to downgrade microcode_ctl and to rebuild initramd for newest kernel and seeing if that fixes the issue. https://bugzilla.redhat.com/show_bug.cgi?id=1353103#c19

    Before that you could try with kernel option "dis_ucode_ldr".

  4. #19
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    Re: unable to boot after updating from fedora 24 4.7.5-200 to fedora 24 4.7.6-200

    Hello
    thank you semirocket.
    If it is easy for, you could you provide me the terminal commands to downgrade microcode_ctl and to rebuild initramd ?
    And to think it still usefuu to push test about dragut like you suggest yesterday ?

    Regards
    Last edited by MarkClerk; 15th October 2016 at 06:58 PM.

  5. #20
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    Re: unable to boot after updating from fedora 24 4.7.5-200 to fedora 24 4.7.6-200

    Hello,

    I don't think dracut page is relevant since you are not getting to that stage. You can just add "dis_ucode_ldr" to kernel command line for a start to see if that helps - On boot menu (grub) choose your new kernel and press 'e'. Next use arrow keys to find a line that starts with linux, append that option to the end of the line and press Ctrl+X to boot.
    https://docs.fedoraproject.org/en-US...B-runtime.html

    microcode_ctl is a dnf package, to downgrade it you can use:
    Code:
    $ sudo dnf downgrade microcode_ctl
    To rebuild initramd for kernel 4.7.6-200.fc24.x86_64 you would enter:
    Code:
    $ sudo dracut -f --kver 4.7.6-200.fc24.x86_64

  6. #21
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    Re: unable to boot after updating from fedora 24 4.7.5-200 to fedora 24 4.7.6-200

    I used terminal to upgrade to kernel 4.7.7 .

    Have tried downgrading microcode_ctl
    dnf downgrade microcode*

    This took it down to v.2.1-11 from v.2.1-13

    Then cd into /boot and ran
    dracut initramfs-4.7.7-200.fc24.x86_64.img 4.7.7-200.fc24.x86_64

    Then rebooted... Same problem no boot.

    I have also tried adding dis_ucode_ldr ... still no boot

  7. #22
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    Re: unable to boot after updating from fedora 24 4.7.5-200 to fedora 24 4.7.6-200

    Hello
    1 i tried to add "dis_ucode_ldr" --> still have the problem

    2 i have also upgraded to kernel 4.7.7 (terminal)
    then
    dnf downgrade microcode_ctl in commandline
    then
    dracut -f --kver 4.7.7-200.fc24.x86_64 in commandline
    --> still have the problem
    3 if i use a light distribution (lxde) instead of gnome, does it change anything ? I guess not because the boot crashes before the graphical destkop is loaded

    What do you suggest me to do now ?

    regards to everyone

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    Re: unable to boot after updating from fedora 24 4.7.5-200 to fedora 24 4.7.6-200

    I am going to uninstall both non-working kernels.
    Then downgrade all packages since last working kernel ( 4.7.5 ) was installed using:

    dnf history list
    dnf history info 1,2,3,etc
    dnf downgrade x,y,z,etc

    Then try reinstalling kernel-4.7.6

    This could take some time so don't expect update for a quite a while.

  9. #24
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    Re: unable to boot after updating from fedora 24 4.7.5-200 to fedora 24 4.7.6-200

    10/10 for effort there myopic. good luck with that

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    Re: unable to boot after updating from fedora 24 4.7.5-200 to fedora 24 4.7.6-200

    Hello Myopic,
    thank you for being so involved in this matter.
    By the way the kernel-4.7.7 is now available with classic dnf upgrade.
    by the way again, samoht0 updated the 1384238 bugzilla redhat ticket : he is thinking about a UEFI related issue

    Let you know if your method solved the problem.

    Good luck

    keep in touch

    Regards

  11. #26
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    Re: unable to boot after updating from fedora 24 4.7.5-200 to fedora 24 4.7.6-200

    If you are feeling adventurous, you could also try to regenerate initramfs for a working kernel with current packages. If it doesn't boot with a previous working kernel then that could possibly tell something.

    Before you do that you can archive currently working /boot/initramfs-<kernel-version> file so that you can restore it later if needed.

    For example:
    Code:
    $ sudo cp -a /boot/initramfs-4.7.5-200.fc24.x86_64.img{,.orig}
    $ dracut -f --kver 4.7.5-200.fc24.x86_64
    If you are unable to boot you can edit grub line that starts with "initrd" to point to archived file:

    Code:
    initrd /initramfs-4.7.5-200.fc24.x86_64.img.orig

  12. #27
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    Re: unable to boot after updating from fedora 24 4.7.5-200 to fedora 24 4.7.6-200

    Hello semiRocket,
    that becomes hard for me. Since i am not an expert with this kind of manipulation, i'm afraid to definitely make my 4.7.5-200 unbootable definitively...
    Once you edit grub line withe initrd like this : 'initrd /initramfs-4.7.5-200.fc24.x86_64.img.orig'
    How do you make it bootable again ?
    I guess asking this question is a prove that my level is not very high !

    myopic seems to be more expert than me ! I hope the tests he is currently doing will give us more clues.

    Thank you to everybody for the contribution for solving this problem

    Regards

  13. #28
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    Re: unable to boot after updating from fedora 24 4.7.5-200 to fedora 24 4.7.6-200

    Well have had fun afternoon downgrading, dnf now informs me I have 178 packages to upgrade.
    I have installed kernel-4.7.7 on top of this downgraded install, but it still refuses to boot.
    Unless anyone has any suggestions regarding working with this downgraded install, I will upgrade to current status and have a play with semiRocket's initramfs idea.
    I wouldnt be surprised if it was a UEFI issue.

  14. #29
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    Re: unable to boot after updating from fedora 24 4.7.5-200 to fedora 24 4.7.6-200

    MarkClerk good news.

    Thanks to samoht0 at bugzilla.redhat for the link to kernel-parameters, and suggestion.

    I found that if you add kernel option:

    efi=noruntime
    kernel-4.7.7 boots.

    This is currently on my downgraded system. I will wait to hear if it works for you before upgrading.

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    Re: unable to boot after updating from fedora 24 4.7.5-200 to fedora 24 4.7.6-200

    Hello
    unfortunately i can not boot even with efi=noruntime.
    But with efi=noruntime i can now see messages.
    The journalctl parameters do not show this

    i'm gone a send you this image since i can not add it here
    regards

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