screen brightness cannot be adjusted

Bug #1846676 reported by Liwei Fang
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux-signed-hwe (Ubuntu)
New
Undecided
Unassigned

Bug Description

Changed the grub to acpi_backlight=vendor was not working. No file showed under ls /sys/class/backlight

Laptop Dell inspiron-3593

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-5.0.0-29-generic 5.0.0-29.31~18.04.1
ProcVersionSignature: Ubuntu 5.0.0-29.31~18.04.1-generic 5.0.21
Uname: Linux 5.0.0-29-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Fri Oct 4 00:21:51 2019
InstallationDate: Installed on 2019-10-03 (1 days ago)
InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
SourcePackage: linux-signed-hwe
UpgradeStatus: No upgrade log present (probably fresh install)

Revision history for this message
Liwei Fang (liweifang0531) wrote :
Revision history for this message
Po-Hsu Lin (cypressyew) wrote :

Do you have a NVIDIA graphic card on your laptop? (check it with "lspci" command in a terminal)
If so, please try to install the proprietary video driver first to see if this can solve your problem.

Changed in linux-signed-hwe (Ubuntu):
status: New → Incomplete
Revision history for this message
Liwei Fang (liweifang0531) wrote : Re: [Bug 1846676] Re: screen brightness cannot be adjusted

Hi Po-Hsu,

Thank you very much for your reply.

No, I do not have NVIDIA graphic card, I only have an Intel integrated graphic card.

Liwei

> On Oct 6, 2019, at 10:47 PM, Po-Hsu Lin <email address hidden> wrote:
>
> Do you have a NVIDIA graphic card on your laptop? (check it with "lspci" command in a terminal)
> If so, please try to install the proprietary video driver first to see if this can solve your problem.
>
> ** Changed in: linux-signed-hwe (Ubuntu)
> Status: New => Incomplete
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1846676
>
> Title:
> screen brightness cannot be adjusted
>
> Status in linux-signed-hwe package in Ubuntu:
> Incomplete
>
> Bug description:
> Changed the grub to acpi_backlight=vendor was not working. No file
> showed under ls /sys/class/backlight
>
> Laptop Dell inspiron-3593
>
> ProblemType: Bug
> DistroRelease: Ubuntu 18.04
> Package: linux-image-5.0.0-29-generic 5.0.0-29.31~18.04.1
> ProcVersionSignature: Ubuntu 5.0.0-29.31~18.04.1-generic 5.0.21
> Uname: Linux 5.0.0-29-generic x86_64
> ApportVersion: 2.20.9-0ubuntu7.7
> Architecture: amd64
> CurrentDesktop: ubuntu:GNOME
> Date: Fri Oct 4 00:21:51 2019
> InstallationDate: Installed on 2019-10-03 (1 days ago)
> InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
> SourcePackage: linux-signed-hwe
> UpgradeStatus: No upgrade log present (probably fresh install)
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe/+bug/1846676/+subscriptions

Po-Hsu Lin (cypressyew)
Changed in linux-signed-hwe (Ubuntu):
status: Incomplete → New
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