Bug 201733

Summary:	Start job running for Entropy Harvesting Daemon and Time Synchronization on 4.20-rc3
Product:	Drivers	Reporter:	Haxk20 (haxk612)
Component:	Other	Assignee:	drivers_other
Status:	RESOLVED PATCH_ALREADY_AVAILABLE
Severity:	high
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	4.20-rc3	Subsystem:
Regression:	No	Bisected commit-id:

Description Haxk20 2018-11-19 15:35:57 UTC

After upgrading to 4.20-rc1 i experienced a start job running for Entropy Harvesting Daemon and Time synchronization and after about 20 seconds CPU lock.
The start jobs never end even after 4 minutes limit. They reset and they start start job again.

Workaround i found around this is reseting BIOS settings to default and then start the system. This time it boots up the system and the 2 services too.

Never experienced this issue on kernel 4.19.

Also system starts OK if i disable Automatic Time Synchronization in GNOME and disable haveged.

But this causes time issues in the system since time isnt totally in sync and can be out of sync quite a bit after few reboots.

Hardware:
Acer Nitro 5 AN515-42
AMD Ryzen 5 2500U with VEGA 8
AMD Radeon RX 560X
Updated to latest BIOS v1.11 (Issue was still there even before BIOS upgrade).

System:
Antergos Linux with testing repos enabled.

Kernel built from AUR package linux-mainline.

Cannot post a dmesg or journalctl since i cant boot into system when the start jobs are running.

P.S: I dont exactly know what is causing this issue so i dont know if this is the right section to post this.

Comment 1 Haxk20 2018-11-19 15:51:18 UTC

Ah this should be sent to linux-kernel@vger.kernel.org im sorry.

Comment 2 Haxk20 2018-11-19 16:16:43 UTC

Also the start jobs start after Update UTMP about Boot/Shutdown service started.
IDK how to take a log from the last boot. Cant find any info on duckduckgo either.

Comment 3 Haxk20 2019-01-09 13:59:19 UTC

Issue was with Acer IOMMU and BIOS issues. Adding ivrs_ioapic[4]=00:14.0 ivrs_ioapic[5]=00:00.2 to boot commands fixes all issues with booting on this laptop.