Hi Jim, thank you for the update on this!
I will mark this bug closed for now, but please re-open it if it turns
out that it is not with the NTP package, but likely the kernel.
Also, feel free to update the bug with the results of the NTP groups
analysis, or provide a link to it so I/others can follow if needed.
** Changed in: linux (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/2078725
Title:
24.04.1 LTS useless as a stratum 1 ntp server
Status in linux package in Ubuntu:
Invalid
Bug description:
I have a machine with a serial attached precision reference clock with
a pps accuracy of +/- 1 nanosecond that I have been using as a stratum
1 ntp server for years.
Upon upgrading from 22.04.4 LTS to 24.04.1 LTS ntp went insane.
ntpq -p shows:
xNMEA(0) .PPS. 0 l 12 16 377 0.0000 -96.8229
0.5427
Previously that 'x', which means the source is being rejected, was
'o', which means the source has pps, and the offset, which now shows
as -96 milliseconds was under 1 millisecond.
From syslog:
ntpd[10299]: REFCLOCK: refclock_params: kernel PLL (hardpps, RFC 1589) not
implemented
ntpd[10299]: REFCLOCK: NMEA(0) set PPSAPI params fails
It appears that the ppsapi has not been implemented in 24.04.1 LTS which
makes it useless as a stratum 1 ntp server.
---
ProblemType: Bug
AlsaVersion: Advanced Linux Sound Architecture Driver Version
k6.8.0-41-lowlatency.
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.28.1-0ubuntu3.1
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/timer',
'/dev/snd/seq', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D3p',
'/dev/snd/hwC0D0', '/dev/snd/hwC0D2', '/dev/snd/controlC0', '/dev/snd/by-path']
failed with exit code 1:
CRDA: N/A
Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
CasperMD5CheckResult: pass
DistroRelease: Ubuntu 24.04
InstallationDate: Installed on 2022-07-05 (791 days ago)
InstallationMedia: Ubuntu-Server 22.04 LTS "Jammy Jellyfish" - Release amd64
(20220421)
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 1a40:0101 Terminus Technology Inc. Hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Lsusb-t:
/: Bus 001.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/6p, 480M
|__ Port 002: Dev 002, If 0, Class=Hub, Driver=hub/4p, 480M
/: Bus 002.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/1p, 5000M
MachineType: Default string Default string
Package: linux (not installed)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm
ProcFB:
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-41-lowlatency
root=UUID=4046c392-c5b7-474e-8533-ac02ad623d3f ro
ProcVersionSignature: Ubuntu 6.8.0-41.41.1-lowlatency 6.8.12
RelatedPackageVersions:
linux-restricted-modules-6.8.0-41-lowlatency N/A
linux-backports-modules-6.8.0-41-lowlatency N/A
linux-firmware 20240318.git3b128b60-0ubuntu2.2
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
Tags: noble
Uname: Linux 6.8.0-41-lowlatency x86_64
UpgradeStatus: Upgraded to noble on 2024-09-01 (2 days ago)
UserGroups: N/A
_MarkForUpload: True
dmi.bios.date: 11/11/2021
dmi.bios.release: 5.6
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 5.6.5
dmi.board.asset.tag: Default string
dmi.board.name: PB_1900A
dmi.board.vendor: AMI Corporation
dmi.board.version: Default string
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr5.6.5:bd11/11/2021:br5.6:svnDefaultstring:pnDefaultstring:pvrDefaultstring:rvnAMICorporation:rnPB_1900A:rvrDefaultstring:cvnDefaultstring:ct3:cvrDefaultstring:skuDefaultstring:
dmi.product.family: Default string
dmi.product.name: Default string
dmi.product.sku: Default string
dmi.product.version: Default string
dmi.sys.vendor: Default string
modified.conffile..etc.default.apport:
# set this to 0 to disable apport, or to 1 to enable it
# you can temporarily override this with
# sudo service apport start force_start=1
enabled=0
mtime.conffile..etc.default.apport: 2022-07-05T15:09:42.972150
mtime.conffile..etc.init.d.apport: 2024-07-22T07:59:07
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