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1

I get this error message 

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

on the startup of my system (even with live-cd).

My PC is a dell inspiron 7559 with intel graphic and nvidia.

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Did you install Nvidia drivers? – Pilot6 Jan 23 '17 at 8:50
    
Same message. ubuntuforums.org/… "replace power supply" was the solution. – Rinzwind Jan 23 '17 at 10:54
    
Bug report: bugs.launchpad.net/ubuntu/+source/linux/+bug/1530405 Also: bugs.launchpad.net/ubuntu/+source/linux/+bug/1530405/comment‌​s/… "upgraded hardware". So it seems to be a hardware problem – Rinzwind Jan 23 '17 at 10:56
    
I don't think power supply is the problem. The laptop works well with windows, but not with Ubuntu. – Vasantha Ganesh K Feb 1 '17 at 11:19
up vote 9 down vote accepted

I also have the same laptop DELL Inspiron 7559, I managed to boot by adding nouveau.modeset=0 to grub linux line. You can add it to the end of the row starts with linux . When you are in grub menu, press e to edit the grub and after you add this press F10 to boot. Your system should start. After that go to System Settings -> Software & Updates -> Additional Drivers and then select the NVIDIA driver. RIght now I'm using NVIDIA binary driver- version 367.57 from nvidia-367 (proprietary, tested).

However I also have problems. First NVIDIA card consumes a lot of power, my battery life is 2 hours with linux (because it only uses NVIDIA GTX 960) and with Windows I get 6hours(If I use it mildly). if i do prime-select intel, and try to log off It gets stuck and I have to reboot it multiple times for to make it boot. Sometimes it never boots back so I have to boot in recovery and switch back to nvidia by prime-select nvidia. I have installed all the dell graphics card drivers and nothing changed still doesnt boot with intel selected. However once I managed to boot with intel and It gave me 6:30 hours of battery life. Something is weird.

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Also I managed to solve my problems! Now I have like 6:30h battery life. link check this guide out. Make sure that you follow the instructions. – Kaan Goksal Feb 10 '17 at 15:15
    
Thanks for the solution, adding "nouveau.modeset=0" in /etc/default/grub solved my boot issue with Ubuntu 17.04 an kernel 4.10.0-28, too. I have a DELL XPS 9560. – minni Jul 19 '17 at 19:46
up vote 0 down vote

I ran into this error booting a gparted live USB and was able to resolve it by choosing the safe graphics options.

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Can you add some details on how that is done to this answer? – fakedad Nov 9 '17 at 3:02
up vote 1 down vote

On MSI GP72 6QF Leopard Pro, I have installed Ubuntu 16.04 LTS. I installed latest MSI BIOS firmware update as of 12/2016. Also, I have secure boot DISABLED, and C-step DISABLED. Since fresh install, the Ubuntu shutdown was halting with following error:

NMI watchdog: BUG: soft lockup - CPU#5 stuck for 22s! [plymouthd:9203]

I'd get different CPU number with each shutdown.

Enabling Nvidia proprietary driver resolved the error and shutdown is successful. To enable NVIDIA driver:

"Additional Driver" >>>> Nvidia Corp >>>> Enable Using Nvidia binary driver - version 367.57 from Nvidia...(proprietary..)

Enjoy.

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the problem is that i can't finish to boot the system cause systemd is blocked by this error.you had this problem on the shutdown, I have it on the startup – TheUnderground95 Feb 6 '17 at 10:35
    
Well darn. I have an MSI dual booting to Ubuntu and it has the same soft lockup shutdown error. This seemed promising so I found the "Additional Driver" setting and, sure enough, it wasn't using NVIDIA's. Unfortunately, changing it didn't seem to help. Still need hard reset to shutdown Ubuntu. – M T Nov 22 '17 at 17:24

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