brightness control not working [Lenovo Legion Y540/Y545]

[luka]

after selecting nvidia-driver-435 in livepatch- additional drivers the brightness control stops working after the first reboot.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7.1
ProcVersionSignature: Ubuntu 5.3.0-28.30~18.04.1-generic 5.3.13
Uname: Linux 5.3.0-28-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
.proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0000:01:00.0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.suspend: suspend hibernate resume
.proc.driver.nvidia.suspend_depth: default modeset uvm
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 435.21 Sun Aug 25 08:17:57 CDT 2019
 GCC version: gcc version 7.4.0 (Ubuntu 7.4.0-1ubuntu1~18.04.1)
ApportVersion: 2.20.9-0ubuntu7.7
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Fri Jan 31 22:00:02 2020
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
DkmsStatus:
 nvidia, 435.21, 4.15.0-76-generic, x86_64: installed
 nvidia, 435.21, 5.3.0-28-generic, x86_64: installed
ExtraDebuggingInterest: Yes
GraphicsCard:
 NVIDIA Corporation Device [10de:2191] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:3ffc]
InstallationDate: Installed on 2020-01-31 (0 days ago)
InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
MachineType: LENOVO 81Q4
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-28-generic root=UUID=084301b5-fdae-4c92-811e-0536a3b7555b ro quiet splash vt.handoff=1
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/23/2019
dmi.bios.vendor: LENOVO
dmi.bios.version: BHCN35WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40709 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Legion Y540-17IRH
dmi.modalias: dmi:bvnLENOVO:bvrBHCN35WW:bd11/23/2019:svnLENOVO:pn81Q4:pvrLegionY540-17IRH:rvnLENOVO:rnLNVNB161216:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrLegionY540-17IRH:
dmi.product.family: Legion Y540-17IRH
dmi.product.name: 81Q4
dmi.product.sku: LENOVO_MT_81Q4_BU_idea_FM_Legion Y540-17IRH
dmi.product.version: Legion Y540-17IRH
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.99-1ubuntu1~18.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 19.2.8-0ubuntu0~18.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx 19.0.2-1ubuntu1.1~18.04.2
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core N/A
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A

[luka (luka-j0e)]

after the last update the brightness controls started working again.

#####################
Start-Date: 2020-04-02 10:24:52
Commandline: aptdaemon role='role-commit-packages' sender=':1.117'
Upgrade: libegl-mesa0:amd64 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libglapi-mesa:amd64 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libglapi-mesa:i386 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libxatracker2:amd64 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libegl1-mesa:amd64 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libgbm1:amd64 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libwayland-egl1-mesa:amd64 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libgl1-mesa-dri:amd64 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libgl1-mesa-dri:i386 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libgl1-mesa-glx:amd64 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libgl1-mesa-glx:i386 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), mesa-vdpau-drivers:amd64 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), mesa-va-drivers:amd64 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libglx-mesa0:amd64 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libglx-mesa0:i386 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3)
End-Date: 2020-04-02 10:24:55

[luka (luka-j0e)]

And the next update broke it again...

#############################

Start-Date: 2020-04-02 11:46:01
Commandline: aptdaemon role='role-commit-packages' sender=':1.164'
Install: linux-modules-5.3.0-45-generic:amd64 (5.3.0-45.37~18.04.1, automatic), linux-modules-extra-4.15.0-91-generic:amd64 (4.15.0-91.92, automatic), linux-image-4.15.0-91-generic:amd64 (4.15.0-91.92, automatic), linux-headers-4.15.0-91:amd64 (4.15.0-91.92, automatic), linux-image-5.3.0-45-generic:amd64 (5.3.0-45.37~18.04.1, automatic), linux-modules-extra-5.3.0-45-generic:amd64 (5.3.0-45.37~18.04.1, automatic), linux-headers-5.3.0-45:amd64 (5.3.0-45.37~18.04.1, automatic), linux-headers-5.3.0-45-generic:amd64 (5.3.0-45.37~18.04.1, automatic), linux-modules-4.15.0-91-generic:amd64 (4.15.0-91.92, automatic), linux-headers-4.15.0-91-generic:amd64 (4.15.0-91.92, automatic)
Upgrade: fdisk:amd64 (2.31.1-0.4ubuntu3.5, 2.31.1-0.4ubuntu3.6), libgcc-7-dev:amd64 (7.4.0-1ubuntu1~18.04.1, 7.5.0-3ubuntu1~18.04), libmpx2:amd64 (8.3.0-6ubuntu1~18.04.1, 8.4.0-1ubuntu1~18.04), bluez:amd64 (5.48-0ubuntu3.3, 5.48-0ubuntu3.4), gir1.2-nm-1.0:amd64 (1.10.6-2ubuntu1.2, 1.10.6-2ubuntu1.4), uuid-runtime:amd64 (2.31.1-0.4ubuntu3.5, 2.31.1-0.4ubuntu3.6), linux-headers-generic:amd64 (4.15.0.88.80, 4.15.0.91.83), libfdisk1:amd64 (2.31.1-0.4ubuntu3.5, 2.31.1-0.4ubuntu3.6), linux-libc-dev:amd64 (4.15.0-88.88, 4.15.0-91.92), vim-common:amd64 (2:8.0.1453-1ubuntu1.1, 2:8.0.1453-1ubuntu1.3), bluez-cups:amd64 (5.48-0ubuntu3.3, 5.48-0ubuntu3.4), grub-common:amd64 (2.02-2ubuntu8.14, 2.02-2ubuntu8.15), linux-image-generic:amd64 (4.15.0.88.80, 4.15.0.91.83), cpp-7:amd64 (7.4.0-1ubuntu1~18.04.1, 7.5.0-3ubuntu1~18.04), libasound2-data:amd64 (1.1.3-5ubuntu0.2, 1.1.3-5ubuntu0.4), libmount1:amd64 (2.31.1-0.4ubuntu3.5, 2.31.1-0.4ubuntu3.6), gcc-8-base:amd64 (8.3.0-6ubuntu1~18.04.1, 8.4.0-1ubuntu1~18.04), gcc-8-base:i386 (8.3.0-6ubuntu1~18.04.1, 8.4.0-1ubuntu1~18.04), libsqlite3-0:amd64 (3.22.0-1ubuntu0.2, 3.22.0-1ubuntu0.3), libicu60:amd64 (60.2-3ubuntu3, 60.2-3ubuntu3.1), libitm1:amd64 (8.3.0-6ubuntu1~18.04.1, 8.4.0-1ubuntu1~18.04), linux-headers-generic-hwe-18.04:amd64 (5.3.0.40.97, 5.3.0.45.101), linux-base:amd64 (4.5ubuntu1, 4.5ubuntu1.1), util-linux:amd64 (2.31.1-0.4ubuntu3.5, 2.31.1-0.4ubuntu3.6), gcc-7-base:amd64 (7.4.0-1ubuntu1~18.04.1, 7.5.0-3ubuntu1~18.04), grub2-common:amd64 (2.02-2ubuntu8.14, 2.02-2ubuntu8.15), libcilkrts5:amd64 (7.4.0-1ubuntu1~18.04.1, 7.5.0-3ubuntu1~18.04), libnm0:amd64 (1.10.6-2ubuntu1.2, 1.10.6-2ubuntu1.4), libasan4:amd64 (7.4.0-1ubuntu1~18.04.1, 7.5.0-3ubuntu1~18.04), libquadmath0:amd64 (8.3.0-6ubuntu1~18.04.1, 8.4.0-1ubuntu1~18.04), network-manager:amd64 (1.10.6-2ubuntu1.2, 1.10.6-2ubuntu1.4), grub-pc:amd64 (2.02-2ubuntu8.14, 2.02-2ubuntu8.15), ibus-gtk:amd64 (1.5.17-3ubuntu5.2, 1.5.17-3ubuntu5.3), ibus-gtk3:amd64 (1.5.17-3ubuntu5.2, 1.5.17-3ubuntu5.3), libgcc1:amd64 (1:8.3.0-6ubuntu1~18.04.1, 1:8.4.0-1ubuntu1~18.04), libgcc1:i386 (1:8.3.0-6ubuntu1~18.04.1, 1:8.4.0-1ubuntu1~18.04), mount:amd64 (2.31.1-0.4ubuntu3.5, 2.31.1-0.4ubuntu3.6), libstdc++-7-dev:amd64 (7.4.0-1ubuntu1~18.04.1, 7.5.0-3ubuntu1~18.04), grub-pc-bin:amd64 (2.02-2ubuntu8.14, 2.02-2ubuntu8.15), apport:amd64 (2.20.9-0u...

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[Kai-Heng Feng (kaihengfeng)]

Can you please attach output of `ls /sys/class/backlight`?

[Lisa Nelson (lisa50469)]

lisa@lisa-Legion-Y545-PG0:~$ ls /sys/class/backlight
acpi_video0
lisa@lisa-Legion-Y545-PG0:~$

[Kai-Heng Feng (kaihengfeng)]

Is there BIOS option to enable hybrid graphics?

[luka (luka-j0e)]

luka@Legion:~$ ls /sys/class/backlight
acpi_video0
luka@Legion:~$

there is an option in the bios to enable hybrid graphics but the laptop does not boot up if I enable it

[Kai-Heng Feng (kaihengfeng)]

Ok, please raise the issue to
https://forums.developer.nvidia.com/c/gpu-unix-graphics/linux

[luka (luka-j0e)]

Ok but I don't need the hybrid graphics enabled. I just want the nvidia card enabled and working all the time.

[Kai-Heng Feng (kaihengfeng)]

That's right, please raise the issue there for discrete-only case.

[Harry Brar (harry-11)]

Sir no resolution legion y545 not working