18.04 can't adjust brightness on ASUS T300F. Worked fine on 16.04.

[Benjamin Li]

Title of my display under Settings is "Unknown Display".

I think there's no proper display driver for my laptop in this new distribution, "18.04", because the setting for my display works fine before I upgrade from 16.04.

While I said "works fine", I meant, I could use the "fn" button plus with the brightness adjusting button, which is "f5" and "f6" on my laptop, to adjust the brightness.

Other than the "fn" combination button not working, I can't even adjust the brightness in the setting and inside the main menu bar, which I think there might have since a control center is one of the features of this version upgrade.

So, thanks for reading my problem, and please help, otherwise, it's so unhealthy for my eyes for looking at a screen with too bright for so long and I have to look at the screen for so long.

Thanks in advance.

Ps, in case it's needed, the model of my laptop is, ASUS T300F. A transform 2-in-one laptop. The fact that my laptop can "transform" might be the reason why I got this issue, the drive that serves all just fail to meet its needs. I'm sorry.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7.1
Uname: Linux 4.17.0-041700rc3-generic x86_64
.tmp.unity_support_test.1:

ApportVersion: 2.20.9-0ubuntu7.4
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Fri Sep 28 21:44:14 2018
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation HD Graphics 5300 [8086:161e] (rev 08) (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. HD Graphics 5300 [1043:15fd]
InstallationDate: Installed on 2018-04-04 (177 days ago)
InstallationMedia: Ubuntu 16.04.4 LTS "Xenial Xerus" - Release amd64 (20180228)
LightdmDisplayLog: (II) Server terminated successfully (0). Closing log file.
MachineType: ASUSTeK COMPUTER INC. T300FA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.17.0-041700rc3-generic root=UUID=63fcbd04-ec8b-462c-ba66-4f45c229353c ro quiet splash nomodeset vt.handoff=1
Renderer: Software
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/01/2015
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: T300FA.214
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: T300FA
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrT300FA.214:bd09/01/2015:svnASUSTeKCOMPUTERINC.:pnT300FA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnT300FA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.family: T
dmi.product.name: T300FA
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
version.compiz: compiz 1:0.9.13.1+18.04.20180302-0ubuntu1
version.libdrm2: libdrm2 2.4.91-2
version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.5-0ubuntu0~18.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.5-0ubuntu0~18.04.1
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2
xserver.bootTime: Fri Sep 28 21:43:24 2018
xserver.configfile: default
xserver.errors:
 open /dev/dri/card0: No such file or directory
 open /dev/dri/card0: No such file or directory
 Screen 0 deleted because of no matching config section.
 AIGLX: reverting to software rendering
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:

xserver.version: 2:1.19.6-1ubuntu4

[Benjamin Li (seasone-liii)]

And the "Night Light Mode" also not working! (which is quite a pain to me, since the night light mode is one of the reasons I decided to upgrade...)

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

This change was made by a bot.

[Timo Aaltonen (tjaalton)]

you have 'nomodeset' boot option set, which disables the gfx driver..

[Benjamin Li (seasone-liii)]

Thank you so much for replying to my question, and I also have more few
things about that "nomodeset" set in the grub file.

The reason why I set that in the grub file is that I got the black screen
in the first boot in after I upgraded from 16.04. And add "nomodeset" in
the grub file is the only way I can boot in the system without using
recovery mode.

And after I deleted the "nomodeset" in the grub and reboot, I got the black
screen again. I can only boot in using recovery mode to add "nomodeset"
into grub so that I use the system again.

By the way, I notice not just fn and the brightness setting key combination
not working, the fn and the lock touchpad combination not working as well,
but there's pop up on the screen indicate the touchpad is locked, which is
not.

Thank you for reading my issue again, and I hope I explained the problem
more clearly. Let me know if there's anything I can do. I am so in love
with Ubuntu, because I have learned a lot from resolving all those peculiar
issues on my laptop, thank you, guys!

On Mon, Oct 1, 2018 at 4:41 PM Timo Aaltonen <email address hidden> wrote:

> you have 'nomodeset' boot option set, which disables the gfx driver..
>
> ** Changed in: linux (Ubuntu)
> Status: Confirmed => Invalid
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1794995
>
> Title:
> 18.04 can't adjust brightness on ASUS T300F. Worked fine on 16.04.
>
> Status in linux package in Ubuntu:
> Invalid
>
> Bug description:
> Title of my display under Settings is "Unknown Display".
>
> I think there's no proper display driver for my laptop in this new
> distribution, "18.04", because the setting for my display works fine
> before I upgrade from 16.04.
>
> While I said "works fine", I meant, I could use the "fn" button plus
> with the brightness adjusting button, which is "f5" and "f6" on my
> laptop, to adjust the brightness.
>
> Other than the "fn" combination button not working, I can't even
> adjust the brightness in the setting and inside the main menu bar,
> which I think there might have since a control center is one of the
> features of this version upgrade.
>
> So, thanks for reading my problem, and please help, otherwise, it's so
> unhealthy for my eyes for looking at a screen with too bright for so
> long and I have to look at the screen for so long.
>
> Thanks in advance.
>
> Ps, in case it's needed, the model of my laptop is, ASUS T300F. A
> transform 2-in-one laptop. The fact that my laptop can "transform"
> might be the reason why I got this issue, the drive that serves all
> just fail to meet its needs. I'm sorry.
>
> ProblemType: Bug
> DistroRelease: Ubuntu 18.04
> Package: xorg 1:7.7+19ubuntu7.1
> Uname: Linux 4.17.0-041700rc3-generic x86_64
> .tmp.unity_support_test.1:
>
> ApportVersion: 2.20.9-0ubuntu7.4
> Architecture: amd64
> CompizPlugins: No value set for
> `/apps/compiz-1/general/screen0/options/active_plugins'
> CompositorRunning: None
> CurrentDesktop: ubuntu:GNOME
> Date: Fri Sep 28 21:44:14 2018
> DistUpgraded: Fresh install
> DistroCodename: bionic
> ...

[Kai-Heng Feng (kaihengfeng)]

If the system is upgraded from 16.04, there should be some older kernels still in your system. See if those kernels still work.

[Benjamin Li (seasone-liii)]

No, I have tried the old kernel which fail to solve the issue and the
problem is getting worse, that, other than the brightness adjusting issue,
I can't get in during system boot! It's totally black screen! I'm in agony
every time I tried to get in Ubuntu but got black screen instead. And the
pertinent post regrading my booting issue has been closed due to no
activities for a long time! Now, I am posting another bug report, hoping
someone can help, thanks! And thank you for answering my posting 😊

On Mon, Jan 14, 2019, 13:20 Kai-Heng Feng <email address hidden>
wrote:

> If the system is upgraded from 16.04, there should be some older kernels
> still in your system. See if those kernels still work.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1794995
>
> Title:
> 18.04 can't adjust brightness on ASUS T300F. Worked fine on 16.04.
>
> Status in linux package in Ubuntu:
> Invalid
>
> Bug description:
> Title of my display under Settings is "Unknown Display".
>
> I think there's no proper display driver for my laptop in this new
> distribution, "18.04", because the setting for my display works fine
> before I upgrade from 16.04.
>
> While I said "works fine", I meant, I could use the "fn" button plus
> with the brightness adjusting button, which is "f5" and "f6" on my
> laptop, to adjust the brightness.
>
> Other than the "fn" combination button not working, I can't even
> adjust the brightness in the setting and inside the main menu bar,
> which I think there might have since a control center is one of the
> features of this version upgrade.
>
> So, thanks for reading my problem, and please help, otherwise, it's so
> unhealthy for my eyes for looking at a screen with too bright for so
> long and I have to look at the screen for so long.
>
> Thanks in advance.
>
> Ps, in case it's needed, the model of my laptop is, ASUS T300F. A
> transform 2-in-one laptop. The fact that my laptop can "transform"
> might be the reason why I got this issue, the drive that serves all
> just fail to meet its needs. I'm sorry.
>
> ProblemType: Bug
> DistroRelease: Ubuntu 18.04
> Package: xorg 1:7.7+19ubuntu7.1
> Uname: Linux 4.17.0-041700rc3-generic x86_64
> .tmp.unity_support_test.1:
>
> ApportVersion: 2.20.9-0ubuntu7.4
> Architecture: amd64
> CompizPlugins: No value set for
> `/apps/compiz-1/general/screen0/options/active_plugins'
> CompositorRunning: None
> CurrentDesktop: ubuntu:GNOME
> Date: Fri Sep 28 21:44:14 2018
> DistUpgraded: Fresh install
> DistroCodename: bionic
> DistroVariant: ubuntu
> ExtraDebuggingInterest: Yes
> GraphicsCard:
> Intel Corporation HD Graphics 5300 [8086:161e] (rev 08) (prog-if 00
> [VGA controller])
> Subsystem: ASUSTeK Computer Inc. HD Graphics 5300 [1043:15fd]
> InstallationDate: Installed on 2018-04-04 (177 days ago)
> InstallationMedia: Ubuntu 16.04.4 LTS "Xenial Xerus" - Release amd64
> (20180228)
> LightdmDisplayLog: (II) Server terminated successfully (0). Closing log
> file.
> MachineType: ASUSTeK COMPUTER INC. T300FA
> ProcKernelCmdLine: BOOT_IMAGE...