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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** Attachment added: "acpidump"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1863407/+attachment/5328347/+files/acpidump.txt
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https://bugs.launchpad.net/bugs/18634
** Attachment added: "fwts"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1863407/+attachment/5328346/+files/fwts
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Title:
Public bug reported:
acpi_osi=Linux and acpi_backlight=vendor do not fix. Depending on the
kernel parameters, /sys/class/backlight contains either "acpi_video0" or
"ideapad". I have also tried acpi_backlight=none
ls /sys/class/backlight:
acpi_video0
grep -r . /proc/acpi
/proc/acpi/button/lid/LID
5 matches
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