This change was made by a bot.
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1859357
Title:
Prime synchronization breaks on kernel 5.4.0-9
Status in linux package in Ubuntu:
Confirmed
Status in nvidia-graphics-drivers-435 package in Ubuntu:
New
Status in nvidia-graphics-drivers-440 package in Ubuntu:
New
Bug description:
Test case:
Optimus hardware
20.04 updated
Install 440 driver
Enable nvidia_drm modeset either thru kernel parameter or a modeprobe.d file.
reboot.
Seen here -
uname -a && xrandr --verbose |grep PRIME && sudo cat
/sys/module/nvidia_drm/parameters/modeset
Linux doug-Lenovo-IdeaPad-Y510P 5.4.0-9-generic #12-Ubuntu SMP Mon Dec 16
22:34:19 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
PRIME Synchronization: 0
PRIME Synchronization: 1
PRIME Synchronization: 1
[sudo] password for doug:
Y
While same machine, ect. while booting to previous 5.3.0-24 kernel
uname -a && xrandr --verbose |grep PRIME && sudo cat
/sys/module/nvidia_drm/parameters/modeset
Linux doug-Lenovo-IdeaPad-Y510P 5.3.0-24-generic #26-Ubuntu SMP Thu Nov 14
01:33:18 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
PRIME Synchronization: 1
PRIME Synchronization: 1
PRIME Synchronization: 1
[sudo] password for doug:
Y
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: nvidia-driver-440 440.44-0ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-9.12-generic 5.4.3
Uname: Linux 5.4.0-9-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu15
Architecture: amd64
CurrentDesktop: Unity:Unity7:ubuntu
Date: Sun Jan 12 14:55:34 2020
InstallationDate: Installed on 2019-12-18 (25 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20191217)
SourcePackage: nvidia-graphics-drivers-440
UpgradeStatus: No upgrade log present (probably fresh install)
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ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu15
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC2: doug 1680 F.... pulseaudio
/dev/snd/controlC1: doug 1680 F.... pulseaudio
/dev/snd/controlC0: doug 1680 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2020-01-13 (1 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20191217)
MachineType: LENOVO 20217
NonfreeKernelModules: nvidia_modeset nvidia
Package: linux (not installed)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-9-generic
root=UUID=35a0dfe1-ac73-4c26-9a62-8e7b3a0838ad ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 5.4.0-9.12-generic 5.4.3
RelatedPackageVersions:
linux-restricted-modules-5.4.0-9-generic N/A
linux-backports-modules-5.4.0-9-generic N/A
linux-firmware 1.184
Tags: focal
Uname: Linux 5.4.0-9-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 09/18/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: 74CN44WW(V3.05)
dmi.board.asset.tag: No Asset Tag
dmi.board.name: VIQY0Y1
dmi.board.vendor: LENOVO
dmi.board.version: 31900058STD
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo IdeaPad Y510P
dmi.modalias:
dmi:bvnLENOVO:bvr74CN44WW(V3.05):bd09/18/2013:svnLENOVO:pn20217:pvrLenovoIdeaPadY510P:rvnLENOVO:rnVIQY0Y1:rvr31900058STD:cvnLENOVO:ct10:cvrLenovoIdeaPadY510P:
dmi.product.family: IDEAPAD
dmi.product.name: 20217
dmi.product.sku: LENOVO_BI_IDEAPAD
dmi.product.version: Lenovo IdeaPad Y510P
dmi.sys.vendor: LENOVO
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