Looking at the upstream bug, I believe this to be fixed in 1.4.0 which
will be available in Noble/24.04 and is also available in Jammy/22.04
with the Lubuntu backports (https://launchpad.net/~lubuntu-
dev/+archive/ubuntu/backports).
If this issue persists in 1.4.0, please reopen.
** Changed in: l
This is the modinfo output of amdgpu.ko kernel module I am using right
now
stefano@stefano-IdeaPad-5-15ARE05:~$ modinfo amdgpu
filename: /lib/modules/5.9.8/kernel/drivers/gpu/drm/amd/amdgpu/amdgpu.ko
license:GPL and additional rights
description:AMD GPU
author: AMD linux
I have a Lenovo IdeaPad 5 with and AMD Ryzen 5 and I have the same issue:
stefano@stefano-IdeaPad-5-15ARE05:~$ lspci -nnk
00:00.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir Root
Complex [1022:1630]
Subsystem: Advanced Micro Devices, Inc. [AMD] Renoir Root Complex
[1022:
I have an AMD E-300 APU with Radeon(tm) HD Graphics, and I'm facing this
same issue on the latest Lubuntu 20.04
I've noted that `xbacklight` displays `No outputs have backlight
property`. It seems that `lxqt-config-brightness` works the same way as
`xbacklight`, or uses it internally.
However, `l
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: lxqt-config (Ubuntu)
Status: New => Confirmed
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Title:
It's an Acer Swift 3 with AMD Ryzen 5 chipset/gpu.
Output from lspci -nnk:
00:00.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device
[1022:15d0]
Subsystem: Acer Incorporated [ALI] Device [1025:1233]
00:00.2 IOMMU [0806]: Advanced Micro Devices, Inc. [AMD] Device [1022:15d1]
** Changed in: lxqt
Status: Unknown => New
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Title:
brightness keys on laptop don't dim the backlight
To manage notifications about this b
Sorry disregard #8 and read #9 instead, I've posted #8 accidentally
before I finished editing it.
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Title:
brightness keys on laptop don't dim th
We need some more information on your system. In particular, it would be
nice to know what hardware you're working with. Maybe provide the
results of `lspci -nnk`?
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Alf, the backlight CAN be adjusted with the dialog box, but not using
the keys (which call lxqt-config-brightness). I can verify this by
adjusting it then catting /sys/class/backlight/amdgpu_bl0/brightness :
Max
cat /sys/class/backlight/amdgpu_bl0/brightness
255
Min
cat /sys/class/backlight/amd
Alf, the backlight CAN be adjusted with the dialog box, but not using
the keys (which call lxqt-config-brightness). I can verify this by
adjusting it then catting /sys/class/backlight/amdgpu_bl0/brightness :
Max
cat /sys/class/backlight/amdgpu_bl0/brightness
255
Min
cat /sys/class/backlight/amd
Andrew, it seems `lxqt-config-brightness -d` should decrease the brightness and
`lxqt-config-brightness -i` should increase it. Media keys
XF86MonBrightnessUp/Down and Shift+Control+F6/7 are set in `lxqt-globalkeysd`
to call these commands. It seems there is no option through
`lxqt-config-brigh
Your bug is now linked, Alf. What about the brightness keys themselves,
though?
** Package changed: lxqt-powermanagement (Ubuntu) => lxqt-config
(Ubuntu)
** Bug watch added: github.com/lxqt/lxqt-config/issues #404
https://github.com/lxqt/lxqt-config/issues/404
** Also affects: lxqt via
htt
Walter - the UI is horrible (really), but there are two things to
consider - if the backlight can be adjusted the slider is enabled. If
not, there is only the brightness control available.
PS: Horrible is the nicest word i can find for the state of the lxqt-
config-brightness UI. Filed a bug a yea
What "feature" are you referring to?
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Title:
brightness keys on laptop don't dim the backlight
To manage notifications about this bug go to:
htt
Thanks for confirming that this feature indeed works as expected.
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Title:
brightness keys on laptop don't dim the backlight
To manage notificati
I got a little further with this. I found that lxqt-config-brightness
is the prorgram that is called when you press brightness up or down.
RUnning this on the terminal reveals the following:
lxqt-config-brightness -r
(0x7ffe7dcde2b0) Debug: No outputs have backlight property
(0x7ffe7dcde2b0) D
** Attachment added: "brightness dialog box explanation"
https://bugs.launchpad.net/ubuntu/+source/lxqt-powermanagement/+bug/1829641/+attachment/5264741/+files/brightness%20bug.png
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