System won't enter suspend after idle over 20 minutes (TSC unstable)

[Cyrus Lien]

Summary: System won't enter suspend after idle over 20 minutes

Steps to reproduce:
1. install manifest and boot into OS
2. idle system for 20 mins

Expected result:
System could enter suspend after idle over 20 minutes

Actual result:
System won't enter suspend after idle over 20 minutes

Failure rate: 3/3

Dmesg:
Jan 30 03:04:47 u-Precision-5540 kernel: [ 159.123341] clocksource: timekeeping watchdog on CPU3: Marking clocksource 'tsc' as unstable because the skew is too large:
Jan 30 03:04:47 u-Precision-5540 kernel: [ 159.123365] clocksource: 'hpet' wd_now: e336cfbb wd_last: e2e9b5c5 mask: ffffffff
Jan 30 03:04:47 u-Precision-5540 kernel: [ 159.123370] clocksource: 'tsc' cs_now: 6299ac5acc cs_last: 6250285866 mask: ffffffffffffffff
Jan 30 03:04:47 u-Precision-5540 kernel: [ 159.123377] tsc: Marking TSC unstable due to clocksource watchdog
Jan 30 03:04:47 u-Precision-5540 kernel: [ 159.123486] TSC found unstable after boot, most likely due to broken BIOS. Use 'tsc=unstable'.
Jan 30 03:04:47 u-Precision-5540 kernel: [ 159.123491] sched_clock: Marking unstable (158972862012, 149405080)<-(159105581047, 17903053)
Jan 30 03:04:47 u-Precision-5540 kernel: [ 159.122862] clocksource: Switched to clocksource hpet

Upstream bug:
https://bugzilla.kernel.org/show_bug.cgi?id=203183
lkml patch:
https://lkml.org/lkml/2019/4/10/167

[Cyrus Lien (cyruslien)]

This bug was fixed in the package linux-oem-osp1 - 5.0.0-1030.34
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1840239/comments/17