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    Oct 2007
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    Acer Nitro AN515-42 and its boot problem

    When I first installed Fedora 29 on my Acer Nitro 5 laptop, it was not a happy machine. Eventually I was able to get it working after much head scratching.
    Via trial and error these kernel parameters seem to work:
    GRUB_CMDLINE_LINUX="resume=UUID=5d1e3899-cc67-4b39-8e26-633f1ce044c9 rcu_nocbs=0-7 ivrs_ioapic[4]=00:14.0 ivrs_ioapic[5]=00:00.2 pti=off"
    If I launch the system with the default kernel parameters it gets stuck with CPU#2 Stuck for 23 seconds message.

    Things went OK until I decided to install Virtualbox. I used the Virtualbox from the virtualbox web site..
    That installer caused some major problems, and gdm would no longer display a login screen.
    So, from a command line I installed and enabled sddm display manager instead.

    That allowed me to boot. However it only works about 1/3 of the time. The other two times, I get a dark screen, no way to switch to anything, cannot be ssh'ed to, thus in essence the machine is dead. About every third time, the machine boots up fine and I get the display working.

    At shutdown, similar scenario -- the machine does not shut down. Dark screen, power still on.
    I hold the power button 5 seconds to turn it off.

    Any ideas what to do?

    I'll include lshw so you can see what the hardware is.
    Last edited by tkalfaoglu; 27th March 2019 at 09:26 PM.

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