I asked our desktop team about this, and Iain Lane mentioned that Ubuntu
overrides the GNOME default of auto-suspending, but that override only
takes effect if you have the ubuntu-settings package installed. I tested
this out on a Saber system, and I can confirm that it does seem to only
happen when gdm is installed/running and ubuntu-settings is *not*
installed. And that explains why I was unable to reproduce in Comment
#5. There I had installed ubuntu-desktop which would bring in ubuntu-
settings. It also explains why the CUDA-11 dependency chain *did* cause
the problem on the x86 server in Comment #8. In that case, gdm3 is
getting installed as a Recommends somewhere in the dependency chain -
but it does not pull in gnome-settings.
I'll therefore go ahead and close the 'linux' task as Invalid - this
isn't a kernel bug. I'll mark the gdm3 bug as "Won't Fix" because, in
theory, we could change the defaults inside of gdm3 itself - but we
instead recommend users install ubuntu-settings to override the
defaults.
** Changed in: linux (Ubuntu)
Status: Incomplete => Invalid
** Changed in: gdm3 (Ubuntu)
Status: Incomplete => Won't Fix
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https://bugs.launchpad.net/bugs/1862559
Title:
ubuntu 19.10: unresponsive/freezes on ThunderX2 if system is idle for
~22min
Status in gdm3 package in Ubuntu:
Won't Fix
Status in linux package in Ubuntu:
Invalid
Bug description:
UBUNTU 19.10 installed on ThunderX2 saber ARM64 machine. If the system
left idle for ~22min it becomes unresponsive. The system will not take
any inputs like from UART, ping ..etc. The system will completely
freeze and we need to hard reset the system. It could be possible the
system goes to hibernate state and could not able to come out of the
state.
Dmesg log when system halts/no response on Saber boards (TX2)
Ubuntu 19.10 ubuntu ttyAMA0
ubuntu login: ubuntu
Password:
Last login: Wed Jan 29 20:08:22 PST 2020 on ttyAMA0
Welcome to Ubuntu 19.10 (GNU/Linux 5.3.0-26-generic aarch64)
* Documentation: https://help.ubuntu.com
* Management: https://landscape.canonical.com
* Support: https://ubuntu.com/advantage
ubuntu@ubuntu:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 19.10
Release: 19.10
Codename: eoan
[ +0.732512] audit: type=1400 audit(1580358920.412:2): apparmor="STATUS"
operation="profile_load" profile="unconfined" name="lsb_release" pid=3087
comm="apparmor_parser"
[ +0.000064] audit: type=1400 audit(1580358920.412:3): apparmor="STATUS"
operation="profile_load" profile="unconfined" name="/usr/sbin/ippusbxd"
pid=3091 comm="apparmor_parser"
[ +0.000168] audit: type=1400 audit(1580358920.412:4): apparmor="STATUS"
operation="profile_load" profile="unconfined" name="nvidia_modprobe" pid=3086
comm="apparmor_parser"
[ +0.000005] audit: type=1400 audit(1580358920.412:5): apparmor="STATUS"
operation="profile_load" profile="unconfined" name="nvidia_modprobe//kmod"
pid=3086 comm="apparmor_parser"
[ +0.000546] audit: type=1400 audit(1580358920.412:6): apparmor="STATUS"
operation="profile_load" profile="unconfined" name="/usr/bin/man" pid=3085
comm="apparmor_parser"
[ +0.000006] audit: type=1400 audit(1580358920.412:7): apparmor="STATUS"
operation="profile_load" profile="unconfined" name="man_filter" pid=3085
comm="apparmor_parser"
[ +0.000005] audit: type=1400 audit(1580358920.412:8): apparmor="STATUS"
operation="profile_load" profile="unconfined" name="man_groff" pid=3085
comm="apparmor_parser"
[ +0.000854] audit: type=1400 audit(1580358920.412:9): apparmor="STATUS"
operation="profile_load" profile="unconfined" name="/usr/sbin/tcpdump" pid=3089
comm="apparmor_parser"
[ +0.002667] audit: type=1400 audit(1580358920.416:10): apparmor="STATUS"
operation="profile_load" profile="unconfined" name="/sbin/dhclient" pid=3093
comm="apparmor_parser"
[ +0.000004] audit: type=1400 audit(1580358920.416:11): apparmor="STATUS"
operation="profile_load" profile="unconfined"
name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=3093
comm="apparmor_parser"
[ +1.382579] igb 0000:92:00.1 enp146s0f1: igb: enp146s0f1 NIC Link is Up
1000 Mbps Full Duplex, Flow Control: RX
[ +0.000299] IPv6: ADDRCONF(NETDEV_CHANGE): enp146s0f1: link becomes ready
[ +3.131173] mpt3sas_cm0: port enable: SUCCESS
[Jan29 20:36] random: crng init done
[ +0.000004] random: 7 urandom warning(s) missed due to ratelimiting
*[Jan29 20:37] rfkill: input handler disabled*
*[Jan29 20:57] PM: suspend entry (deep)*
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