Public bug reported:
The brightness level works correctly, but when the system goes to sleep
mode and then I wake it up, I am not able to increase/decrease the
brightness level using the keyboard controls (Fn + F11/F12), it works as
a On/Off switch pretty much. When it wakes up, the brightness level is
the same level as it was before entering the suspend mode. But when I
try to lower the brightness level (through the keyboard controls), it
completely shuts off, going to the lowest level directly (pretty much
shutting off the screen), even though it is not even close to that on
the slider control. And then, when I increase the brightness level (on
the keyboard), it goes back to the previous level, working like a On/Off
switch instead of a smooth operation. This looks to be related to the
kernel, as the GUI (GNOME) presents the slider control correctly, but
the setting isn't been correctly applied. On the slider control on the
pop-up box on the top right corner (GNOME 3.34), when I change the
level, it works correctly, just as it should. But, when I try to use the
keyboard controls (Fn + F11/F12), the issue presented previously happens
again. The only way to fix that bug is restarting the system. Again,
this just happens when I put the system in Suspend Mode.
System Info:
1) Description: Ubuntu 19.10
Release: 19.10
2) Hardware:
CPU: AMD Ryzen 5 2500U
GPU: AMD Raven Ridge (Vega 8)
Laptop model: Lenovo IdeaPad 330S (330S-15ARR)
ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: linux-image-5.3.0-19-generic 5.3.0-19.20
ProcVersionSignature: Ubuntu 5.3.0-19.20-generic 5.3.1
Uname: Linux 5.3.0-19-generic x86_64
ApportVersion: 2.20.11-0ubuntu8.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: matheus 1379 F.... pulseaudio
/dev/snd/controlC0: matheus 1379 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Mon Nov 11 10:06:32 2019
InstallationDate: Installed on 2019-09-22 (49 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
MachineType: LENOVO 81JQ
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-19-generic
root=UUID=0f9fdad5-0ee7-4039-acba-801eda1522f0 ro iommu=soft quiet splash
vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-5.3.0-19-generic N/A
linux-backports-modules-5.3.0-19-generic N/A
linux-firmware 1.183.1
SourcePackage: linux
UpgradeStatus: Upgraded to eoan on 2019-10-15 (26 days ago)
dmi.bios.date: 05/22/2019
dmi.bios.vendor: LENOVO
dmi.bios.version: 7WCN37WW
dmi.board.asset.tag: No Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40679WIN
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo ideapad 330S-15ARR
dmi.modalias:
dmi:bvnLENOVO:bvr7WCN37WW:bd05/22/2019:svnLENOVO:pn81JQ:pvrLenovoideapad330S-15ARR:rvnLENOVO:rnLNVNB161216:rvrSDK0J40679WIN:cvnLENOVO:ct10:cvrLenovoideapad330S-15ARR:
dmi.product.family: ideapad 330S-15ARR
dmi.product.name: 81JQ
dmi.product.sku: LENOVO_MT_81JQ_BU_idea_FM_ideapad 330S-15ARR
dmi.product.version: Lenovo ideapad 330S-15ARR
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug eoan wayland-session
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https://bugs.launchpad.net/bugs/1852084
Title:
Backlight brightness not working correctly after waking from Suspend
Mode
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