16.04 install freezing with watchdog: BUG: soft lockup - CPU#6 stuck for 22s [duplicate]

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  • NMI watchdog: BUG: soft lockup - CPU#2 stuck for 23s! [plymouthd:305]

    4 answers



I am trying to install Ubuntu 16.04 on a new Dell XPS 15, 16gb Ram, i7 7700 CPU, 512gb SSD.



Windows is already preinstalled which I want to keep for the odd admin task so I added a partition of 220gb for my main Ubuntu machine. I have tried installing using the same boot drive I used on my new PC about 2 weeks ago which worked fine on there but I am just getting numerous errors when trying to install on this new machine.



terminal output 1
terminal output 2



I also tried installing the latest elementary OS with similar issues.



As the console was mentioning CPU I downloaded and ran the intel processor test and everything came out fine. Windows is also running well, or as well as it does so hardware seems fine.



Any ideas on how to resolve this?



I have tried three different usb drives all with the same result and also multiple ports on the machine itself.










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marked as duplicate by user68186, karel, Fabby, waltinator, George Udosen Apr 19 at 15:22


This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.


















    up vote
    1
    down vote

    favorite













    This question already has an answer here:



    • NMI watchdog: BUG: soft lockup - CPU#2 stuck for 23s! [plymouthd:305]

      4 answers



    I am trying to install Ubuntu 16.04 on a new Dell XPS 15, 16gb Ram, i7 7700 CPU, 512gb SSD.



    Windows is already preinstalled which I want to keep for the odd admin task so I added a partition of 220gb for my main Ubuntu machine. I have tried installing using the same boot drive I used on my new PC about 2 weeks ago which worked fine on there but I am just getting numerous errors when trying to install on this new machine.



    terminal output 1
    terminal output 2



    I also tried installing the latest elementary OS with similar issues.



    As the console was mentioning CPU I downloaded and ran the intel processor test and everything came out fine. Windows is also running well, or as well as it does so hardware seems fine.



    Any ideas on how to resolve this?



    I have tried three different usb drives all with the same result and also multiple ports on the machine itself.










    share|improve this question













    marked as duplicate by user68186, karel, Fabby, waltinator, George Udosen Apr 19 at 15:22


    This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
















      up vote
      1
      down vote

      favorite









      up vote
      1
      down vote

      favorite












      This question already has an answer here:



      • NMI watchdog: BUG: soft lockup - CPU#2 stuck for 23s! [plymouthd:305]

        4 answers



      I am trying to install Ubuntu 16.04 on a new Dell XPS 15, 16gb Ram, i7 7700 CPU, 512gb SSD.



      Windows is already preinstalled which I want to keep for the odd admin task so I added a partition of 220gb for my main Ubuntu machine. I have tried installing using the same boot drive I used on my new PC about 2 weeks ago which worked fine on there but I am just getting numerous errors when trying to install on this new machine.



      terminal output 1
      terminal output 2



      I also tried installing the latest elementary OS with similar issues.



      As the console was mentioning CPU I downloaded and ran the intel processor test and everything came out fine. Windows is also running well, or as well as it does so hardware seems fine.



      Any ideas on how to resolve this?



      I have tried three different usb drives all with the same result and also multiple ports on the machine itself.










      share|improve this question














      This question already has an answer here:



      • NMI watchdog: BUG: soft lockup - CPU#2 stuck for 23s! [plymouthd:305]

        4 answers



      I am trying to install Ubuntu 16.04 on a new Dell XPS 15, 16gb Ram, i7 7700 CPU, 512gb SSD.



      Windows is already preinstalled which I want to keep for the odd admin task so I added a partition of 220gb for my main Ubuntu machine. I have tried installing using the same boot drive I used on my new PC about 2 weeks ago which worked fine on there but I am just getting numerous errors when trying to install on this new machine.



      terminal output 1
      terminal output 2



      I also tried installing the latest elementary OS with similar issues.



      As the console was mentioning CPU I downloaded and ran the intel processor test and everything came out fine. Windows is also running well, or as well as it does so hardware seems fine.



      Any ideas on how to resolve this?



      I have tried three different usb drives all with the same result and also multiple ports on the machine itself.





      This question already has an answer here:



      • NMI watchdog: BUG: soft lockup - CPU#2 stuck for 23s! [plymouthd:305]

        4 answers







      system-installation






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Apr 17 at 18:45









      user8467470

      133




      133




      marked as duplicate by user68186, karel, Fabby, waltinator, George Udosen Apr 19 at 15:22


      This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.






      marked as duplicate by user68186, karel, Fabby, waltinator, George Udosen Apr 19 at 15:22


      This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.






















          1 Answer
          1






          active

          oldest

          votes

















          up vote
          1
          down vote



          accepted










          I'm an owner of the XPS 9560, I think the same system. There's an XPS specific bug at the moment that requires adding



          acpi_rev_override=1



          to the boot params to avoid a soft lockup when accessing the dedicated GPU in any capacity. In grub when booting the installer, tap "e" then add acpi_rev_override=1 after quiet splash and it should boot properly.






          share|improve this answer
















          • 1




            Thank you so much for that! It worked a treat, and yes I am running an XPS 9560 too :) It would have taken me multiple life times to work that one out.
            – user8467470
            Apr 17 at 19:17










          • Took me a ridiculous amount of time as well when I had to find it, it probably didn't help that I was installing arch just a month or two after it came out--no one knew why things wouldn't work, it had to do with weird changes that came to optimus with the 10xx series GPUs. The installer would boot, then crash as soon as you tried to enumerate pcie devices.
            – sbergeron
            Apr 17 at 19:22










          • Haha. Rather you than me. I am a web dev so have enough bugs in my life already :) Do I need to reconfigure the drivers or anything once installed? I am trying elementary but won't shut down or restart so something going on there.
            – user8467470
            Apr 17 at 19:35

















          1 Answer
          1






          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes








          up vote
          1
          down vote



          accepted










          I'm an owner of the XPS 9560, I think the same system. There's an XPS specific bug at the moment that requires adding



          acpi_rev_override=1



          to the boot params to avoid a soft lockup when accessing the dedicated GPU in any capacity. In grub when booting the installer, tap "e" then add acpi_rev_override=1 after quiet splash and it should boot properly.






          share|improve this answer
















          • 1




            Thank you so much for that! It worked a treat, and yes I am running an XPS 9560 too :) It would have taken me multiple life times to work that one out.
            – user8467470
            Apr 17 at 19:17










          • Took me a ridiculous amount of time as well when I had to find it, it probably didn't help that I was installing arch just a month or two after it came out--no one knew why things wouldn't work, it had to do with weird changes that came to optimus with the 10xx series GPUs. The installer would boot, then crash as soon as you tried to enumerate pcie devices.
            – sbergeron
            Apr 17 at 19:22










          • Haha. Rather you than me. I am a web dev so have enough bugs in my life already :) Do I need to reconfigure the drivers or anything once installed? I am trying elementary but won't shut down or restart so something going on there.
            – user8467470
            Apr 17 at 19:35














          up vote
          1
          down vote



          accepted










          I'm an owner of the XPS 9560, I think the same system. There's an XPS specific bug at the moment that requires adding



          acpi_rev_override=1



          to the boot params to avoid a soft lockup when accessing the dedicated GPU in any capacity. In grub when booting the installer, tap "e" then add acpi_rev_override=1 after quiet splash and it should boot properly.






          share|improve this answer
















          • 1




            Thank you so much for that! It worked a treat, and yes I am running an XPS 9560 too :) It would have taken me multiple life times to work that one out.
            – user8467470
            Apr 17 at 19:17










          • Took me a ridiculous amount of time as well when I had to find it, it probably didn't help that I was installing arch just a month or two after it came out--no one knew why things wouldn't work, it had to do with weird changes that came to optimus with the 10xx series GPUs. The installer would boot, then crash as soon as you tried to enumerate pcie devices.
            – sbergeron
            Apr 17 at 19:22










          • Haha. Rather you than me. I am a web dev so have enough bugs in my life already :) Do I need to reconfigure the drivers or anything once installed? I am trying elementary but won't shut down or restart so something going on there.
            – user8467470
            Apr 17 at 19:35












          up vote
          1
          down vote



          accepted







          up vote
          1
          down vote



          accepted






          I'm an owner of the XPS 9560, I think the same system. There's an XPS specific bug at the moment that requires adding



          acpi_rev_override=1



          to the boot params to avoid a soft lockup when accessing the dedicated GPU in any capacity. In grub when booting the installer, tap "e" then add acpi_rev_override=1 after quiet splash and it should boot properly.






          share|improve this answer












          I'm an owner of the XPS 9560, I think the same system. There's an XPS specific bug at the moment that requires adding



          acpi_rev_override=1



          to the boot params to avoid a soft lockup when accessing the dedicated GPU in any capacity. In grub when booting the installer, tap "e" then add acpi_rev_override=1 after quiet splash and it should boot properly.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Apr 17 at 18:50









          sbergeron

          1,97852139




          1,97852139







          • 1




            Thank you so much for that! It worked a treat, and yes I am running an XPS 9560 too :) It would have taken me multiple life times to work that one out.
            – user8467470
            Apr 17 at 19:17










          • Took me a ridiculous amount of time as well when I had to find it, it probably didn't help that I was installing arch just a month or two after it came out--no one knew why things wouldn't work, it had to do with weird changes that came to optimus with the 10xx series GPUs. The installer would boot, then crash as soon as you tried to enumerate pcie devices.
            – sbergeron
            Apr 17 at 19:22










          • Haha. Rather you than me. I am a web dev so have enough bugs in my life already :) Do I need to reconfigure the drivers or anything once installed? I am trying elementary but won't shut down or restart so something going on there.
            – user8467470
            Apr 17 at 19:35












          • 1




            Thank you so much for that! It worked a treat, and yes I am running an XPS 9560 too :) It would have taken me multiple life times to work that one out.
            – user8467470
            Apr 17 at 19:17










          • Took me a ridiculous amount of time as well when I had to find it, it probably didn't help that I was installing arch just a month or two after it came out--no one knew why things wouldn't work, it had to do with weird changes that came to optimus with the 10xx series GPUs. The installer would boot, then crash as soon as you tried to enumerate pcie devices.
            – sbergeron
            Apr 17 at 19:22










          • Haha. Rather you than me. I am a web dev so have enough bugs in my life already :) Do I need to reconfigure the drivers or anything once installed? I am trying elementary but won't shut down or restart so something going on there.
            – user8467470
            Apr 17 at 19:35







          1




          1




          Thank you so much for that! It worked a treat, and yes I am running an XPS 9560 too :) It would have taken me multiple life times to work that one out.
          – user8467470
          Apr 17 at 19:17




          Thank you so much for that! It worked a treat, and yes I am running an XPS 9560 too :) It would have taken me multiple life times to work that one out.
          – user8467470
          Apr 17 at 19:17












          Took me a ridiculous amount of time as well when I had to find it, it probably didn't help that I was installing arch just a month or two after it came out--no one knew why things wouldn't work, it had to do with weird changes that came to optimus with the 10xx series GPUs. The installer would boot, then crash as soon as you tried to enumerate pcie devices.
          – sbergeron
          Apr 17 at 19:22




          Took me a ridiculous amount of time as well when I had to find it, it probably didn't help that I was installing arch just a month or two after it came out--no one knew why things wouldn't work, it had to do with weird changes that came to optimus with the 10xx series GPUs. The installer would boot, then crash as soon as you tried to enumerate pcie devices.
          – sbergeron
          Apr 17 at 19:22












          Haha. Rather you than me. I am a web dev so have enough bugs in my life already :) Do I need to reconfigure the drivers or anything once installed? I am trying elementary but won't shut down or restart so something going on there.
          – user8467470
          Apr 17 at 19:35




          Haha. Rather you than me. I am a web dev so have enough bugs in my life already :) Do I need to reconfigure the drivers or anything once installed? I am trying elementary but won't shut down or restart so something going on there.
          – user8467470
          Apr 17 at 19:35


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