** Tags added: cscc
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Title:
FN+F3/F4 does not modify keyboard backlight brightness.
To manage notifications about this bug go to:
Hi, for me all fn combs work except keyboard backlight, I'm on an Asus
ROG.
For me there are both 'kbd_backlight' and 'kbd_backlight_1' in
sys/class/leds/asus::<...>.
I can also manually adjust
'sys/class/leds/asus::kbd_backlight_1/brightness' which effectively
toggles the light.
The Fn
Disco
5.0.2-050002-lowlatency
update / upgrade daily
(Been working since my last post)
I haven't done a re-install, but it seems like one might be coming up
for me in the near future, so I can report back if it works without the
solution I utilize.
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Please update your system, I recall new upower has a fix for this issue.
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Title:
FN+F3/F4 does not modify keyboard backlight brightness.
To
I don't think it works on the 4.18 kernel.
I updated to: 4.20.3-042003-generic
I changed this line in /etc/defaults/grub to:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=native"
Keyboard backlight and screen now respond to FN commands.
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and and https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1796573
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Title:
FN+F3/F4 does not modify keyboard backlight brightness.
To manage
See also https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1802652
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Title:
FN+F3/F4 does not modify keyboard backlight brightness.
To manage
Same problem with Lubuntu 18.10 on ASUS Zenbook UX31A. It loads asus kernel
modules:
- asus_nb_wmi
- asus_wmi
- asus_wireless
Used to work with all versions in the last five years prior to 18.10.
The manual echo commands listed at the the top do work.
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Steps:
Download daily Disco ISO: 2019-01-01 07:50
Write to USB
Boot
Connect to WiFi
Enable repositories
Open terminal
sudo apt install acpica-tools -y
sudo acpidump > acpidump.log
** Attachment added: "acpidump.log"
Found out it's part of the acpica-tools package.
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Title:
FN+F3/F4 does not modify keyboard backlight brightness.
To manage notifications about
How do I get "acpidump"? Does this refer to "apport-collect 1806343"?
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Title:
FN+F3/F4 does not modify keyboard backlight brightness.
To manage
Please boot without any workaround, then attach "acpidump" here, thanks!
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Title:
FN+F3/F4 does not modify keyboard backlight brightness.
To
Whoops, forgot about that, I was attempting to use that to fix some
things (trying things from internet searches,) didn't work before that.
I could load up a Live CD and give the defaults from that, doesn't work
on those.
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Not sure why "acpi_osi=" is uses in your kernel parameter, but please
remove it and see if it starts working.
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Title:
FN+F3/F4 does not modify
I commented out asus_nb_wmi that I had in /etc/modules before I posted
that.
Booted back into 4.20 with it still commented out and and the FN keys
are working.
Does it remember me utilizing asus_nb_wmi and saving elsewhere?
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apport information
** Description changed:
acpi_listen does not output anything to terminal when pressing key
combination.
Keyboard backlight has worked on older versions (I believe 18.04 or
earlier.)
I can manually toggle with:
echo 0 | sudo tee --append
Can you boot to default Ubuntu kernel without any workaround, then run
"apport-collect 1806343"?
Seems like ASUS_NB_WMI_EVENT_GUID is missing but ASUS_WMI_MGMT_GUID is
present.
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Correct.
I was looking through asus modules and decided to load this one and the
keyboard/screen backlight fn hotkeys began to work afterwards.
Previously I was manually echoing keyboard brightness and using
xbacklight -inc/-dec to change my screen brightness.
This laptop model is: ASUS
I also recently upgraded to kernel: 4.20.0-042000rc6-generic to test out
as 4.19 was having issues corrupting ext4 partitions.
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Title:
FN+F3/F4
So asus_nb_wmi isn't automatically loaded on the system?
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Title:
FN+F3/F4 does not modify keyboard backlight brightness.
To manage
Finally figured out to load module: asus_nb_wmi
Keyboard and screen back light all respond now.
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Title:
FN+F3/F4 does not modify keyboard
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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Title:
FN+F3/F4 does not modify keyboard backlight brightness.
To manage
apport information
** Tags added: apport-collected
** Description changed:
acpi_listen does not output anything to terminal when pressing key
combination.
Keyboard backlight has worked on older versions (I believe 18.04 or
earlier.)
I can manually toggle with:
echo 0 | sudo
** Attachment added: "lspci-vnvn.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1806343/+attachment/5218415/+files/lspci-vnvn.log
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