https://bugzilla.kernel.org/show_bug.cgi?id=205237
Bug ID: 205237
Summary: Kernel needs a special argument to function on HP
Pavillion x360 13 inch
Product: ACPI
Version: 2.5
Kernel Version: 5.4-rc3
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Config-Other
Assignee: acpi_config-ot...@kernel-bugs.osdl.org
Reporter: il...@fastmail.fm
Regression: No
Kernel 4.x could boot with acpi=off with severely decreased functionality
(battery, wifi, screenbacklight) however 5.x kernels, including the latest
5.4-rc3 freezes at "loading ramdisk" step unless you pass acpi_osi= (null,
nothing after =) to kernel.
There is no visible log/feedback produced so users tend to give up and move on
to other operating systems hence there isn't any tips regarding this workaround
except couple of pages.
I can boot fine with acpi_osi= argument. I tested latest RC (using Ubuntu
16.10) however it effects every kernel out there, on this particular machine.
I can provide more details, even a root shell if it can help.
More possible machine details etc. are at
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1848445
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