[Bug 219346] [BISECTED] Disable ACPI PM Timer breaks suspend on all Amber Lake machines

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https://bugzilla.kernel.org/show_bug.cgi?id=219346

--- Comment #4 from Todd Brandt (todd.e.brandt@xxxxxxxxx) ---
ok I just tested with your patch, it fixed S3, but S2idle and S4 are still
broken and still hang the system. The only difference is when S2idle or S4 hang
the system will display this on the screen:

[ OK ] Started Show Plymouth Boot Screen
[ OK ] Started Forward Password R#s to Plymouth Directory
Watch.plymouth-start.service
[ OK ] Reached target Local Encrypted Volumes.
systemd-journal-flush.service
[ OK ] Finished Flush Journal to Persistent Storange
[ OK ] Created slice Slice /system/systemd-backlight
       Starting Load/Save Screen #f backlight:intel_backlight...
[ OK ] Finished Load/Save Screen # of backlight:intel_backlight.
systemd-backlight@backlight:intel_backlight.service

And it hangs, doesn't respond to any keypresses, it just sits there. So in
short the only two changes are:
1) fixes S3
2) leave S2idle and S4 broken but displays a weird status on the screen on hang

So this is clearly affecting more than just S3, that timer has some purpose in
Amber Lake that breaks when the timer is shut down.

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