** Changed in: linux (Ubuntu Impish)
Status: In Progress => Fix Committed
** Changed in: linux (Ubuntu Jammy)
Status: In Progress => Fix Committed
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oem-5.14 in Ubuntu.
https://bugs.launchpad.net/bugs/1954930
Title:
AMD: Suspend not working when some cores are disabled through cpufreq
Status in HWE Next:
New
Status in linux package in Ubuntu:
Fix Committed
Status in linux-oem-5.14 package in Ubuntu:
Invalid
Status in linux source package in Focal:
Invalid
Status in linux-oem-5.14 source package in Focal:
Fix Committed
Status in linux source package in Impish:
Fix Committed
Status in linux-oem-5.14 source package in Impish:
Invalid
Status in linux source package in Jammy:
Fix Committed
Status in linux-oem-5.14 source package in Jammy:
Invalid
Bug description:
[SRU Justification]
[Impact]
Detailed in https://gitlab.freedesktop.org/drm/amd/-/issues/1708, taking
some cpu cores offline using cpufreq gadgets or via sysfs may hang the
system.
[Fix]
In v5.16-rc1 commit d6b88ce2eb9d ("ACPI: processor idle: Allow playing
dead in C3 state") fixes this issue.
[Test Case]
As stated in aforementioned bug url, setup cpufreq extention to take
down a few cpu cores, and trigger system suspend. There are ~50% chances
that networking/input/... would hang and the user can only reboot by
sysrq keys.
[Where problems could occur]
According to the patch discussion thread in
https://lore.kernel.org/linux-acpi/20210922133116.102-1-richard.g...@amd.com/,
the limitation to allow enter_dead in no more than ACPI_STATE_C2 might
not have a practical meaning, but simply C2 was the deepest supported
then.
[Other Info]
While this is currently only available in v5.16-rc1 and affects AMD
Cezanne/Barcelo, oem-5.14/impish and jammy are nominated.
========== original bug report ==========
https://gitlab.freedesktop.org/drm/amd/-/issues/1708
Reproduce steps:
1. Install cpufeq gnome extension
(https://extensions.gnome.org/extension/1082/cpufreq/)
2. Click on the cpu freq extention in the top bar
3. Slide the "cores online" from 16 to 3
4. close lid of laptop
Expected result: the laptop goes into suspend
Actual result: the laptop stay on but screen is now always black and keyboard
input is ignored
Fix committed to v5.16-rc1:
https://github.com/torvalds/linux/commit/d6b88ce2eb9d2698eb24451eb92c0a1649b17bb1
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.20
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: ubuntu 1188 F.... pulseaudio
/dev/snd/controlC2: ubuntu 1188 F.... pulseaudio
/dev/snd/controlC0: ubuntu 1188 F.... pulseaudio
CasperMD5CheckResult: skip
Dependencies:
DistributionChannelDescriptor:
# This is the distribution channel descriptor for the OEM CDs
# For more information see
http://wiki.ubuntu.com/DistributionChannelDescriptor
canonical-oem-somerville-focal-amd64-20200502-85+fossa-edge-staging+X152
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2021-09-09 (97 days ago)
InstallationMedia: Ubuntu 20.04 "Focal" - Build amd64 LIVE Binary
20200502-05:58
IwConfig:
lo no wireless extensions.
enp1s0f0 no wireless extensions.
Lsusb:
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 002: ID 062a:4c01 MosArt Semiconductor Corp. 2.4G INPUT DEVICE
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: AMD Celadon-CZN
Package: linux-firmware 1.187.23+staging.38 [origin:
LP-PPA-canonical-hwe-team-linux-firmware-staging]
PackageArchitecture: all
ProcFB: 0 amdgpu
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.14.0-9011-oem
root=UUID=668f30b7-78ec-472e-9916-c9b1cbdbbbc6 ro automatic-oem-config
no_console_suspend
ProcVersionSignature: Ubuntu 5.14.0-9011.11+staging.37-oem 5.14.20
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-5.14.0-9011-oem N/A
linux-backports-modules-5.14.0-9011-oem N/A
linux-firmware 1.187.23+staging.38
RfKill:
Tags: third-party-packages focal
Uname: Linux 5.14.0-9011-oem x86_64
UnreportableReason: This is not an official Ubuntu package. Please remove any
third party package and try again.
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: N/A
_MarkForUpload: True
dmi.bios.date: 06/30/2021
dmi.bios.release: 19.1
dmi.bios.vendor: INSYDE Corp.
dmi.bios.version: RLD1005B_AB
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Celadon-CZN
dmi.board.vendor: AMD
dmi.board.version: Base Board Version
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnINSYDECorp.:bvrRLD1005B_AB:bd06/30/2021:br19.1:svnAMD:pnCeladon-CZN:pvr1:rvnAMD:rnCeladon-CZN:rvrBaseBoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:sku123456789:
dmi.product.family: Renoir
dmi.product.name: Celadon-CZN
dmi.product.sku: 123456789
dmi.product.version: 1
dmi.sys.vendor: AMD
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