This still happens in 20.04 with Ideapad L340 81TR0003BR.
The fix in my case is switching to to linux-oem-20.04b (linux-
oem-20.04-edge should also work) and creating a Xorg configuration file
that enables EnableBrightnessControl solved the issue, here's the full
command:
cat < Section "Device"
>
This problem seems to persist on Ubuntu 20.10. The workaround is using an
"external" app.
> sudo apt install brightness-controller
Probably this a nvidia related issue. Opening the Nvidia configuration
app resets to max brightness.
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[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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T
Does this issue still happen under 20.04?
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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Title:
Lenovo Ideapad L340 scree
This problem is devastating my battery life, since my screen is at 100%
brightness at all times if anyone has any ideas about how to fix
this I'm all ears
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No change. /sys/class/backlist has acpi_video0 listed.
keyboard backlight controls do modify 'brightness' file, but there is no
change to the backlight.
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Could you try:
acpi_backlight=video
in kernel cmdline?
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Title:
Lenovo Ideapad L340 screen backlight stuck at maximum brightness
To manage noti
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Title:
Lenovo Ideap
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Title:
