Can you try kernel parameter "acpi_osi=Linux-Dell-Video" for that?
That's a workaround that in ACPI uses old _DSM for Linux.
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https://bugs.launchpad.net/bugs/1774865
Title:
Thanks! Leaving some notes in case someone else runs into this and finds
this page. I was having some problems with bumblebee (installation would
hang, then the whole system would freeze when trying to reboot), and I
think that broke something. I assumed it was the kernel because it was
the first
Try kernel parameter "nouveau.modeset=0".
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https://bugs.launchpad.net/bugs/1774865
Title:
4.15.0-22 won't boot on Dell XPS 15 9570
Status in linux package in Ubuntu:
** Changed in: linux (Ubuntu)
Importance: Undecided => High
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Bionic)
Importance: Undecided => High
** Changed in: linux (Ubuntu Bionic)
Status: New => Triaged
** Tags
I later hit the same with the 4.15.0-20 kernel. I think something got
messed up either with grub or the initramfs. We can close this.
** Description changed:
4.15.0-22 fails on boot on a Dell XPS 9570 with "not all CPUs entered
- broadcast".
+ broadcast exception handler".
4.15.0-20 works
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