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I'm trying to install Ubuntu 18.04 on a Dell XPS9560 with an Intel Core i7-7700HQ and It was freezing up on the splash screen. I started it again and disabled the splash screen in the GRUB command line and I saw it freeze with these repeated "soft lockups" on several different processes. I'm pretty sure it's not a low-level hardware failure because I have Ubuntu 16.04 and Kubuntu 18.04 installed on two different partitions of this computer and both work fine.

enter image description here

Sorry for the low image quality. It's a phone picture because a screenshot won't work. Any idea what would cause this?

John Stanford
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1 Answers1

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There are several things you can try, in order

1) Add acpi_osi=! acpi_osi="Windows 2009" to your kernel command line.

2) Add clocksource=tsc to your kernel command line.

3) Add pci=nommconf to your kernel command line.

I think the first one is the best bet. I have an XPS and it cleared up some occasional (sometimes often) CPU lockups. Something weird with the Dell bios or something, I am not really sure what it does.

acpi_osi

tsc

pci=nommconf (Ctrl-F "nommconf"; there was no easy link).

l3l_aze
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theferrit32
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