Updated to 4.19-rc7 (uname -r = `4.19.0-041900rc7-generic`) with 'Ubuntu
Kernel Update Utility'. Without any boot parameters, brightness still
doesn't function (but UI shows it changing).
Are there any other things you want me to try on this kernel?
Unfortunately a lot of other things seemed to b
I only did a quick loot on the ACPI tables, but the brightness control
methods looks fine.
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Title:
Backlight Not Functional - Origin EVO 15-S (Cl
Is it possible for you to try latest mainline kernel [1]?
[1] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19-rc7/
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Title:
Backlight Not Fun
Tried 'acpi_osi=! acpi_osi="Windows 2009"' and brightness did not
change.
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Title:
Backlight Not Functional - Origin EVO 15-S (Clevo)
To manage n
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
** Changed in: linux (Ubuntu)
Status: Incomplete => Triaged
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Maybe try 'acpi_osi=! acpi_osi="Windows 2009"'.
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Title:
Backlight Not Functional - Origin EVO 15-S (Clevo)
To manage notifications about this bu
Tried both nvidia-driver-390 and nvidia-driver-396 (from graphics-
drivers PPA). Neither allow backlight to change upon reboot.
Not sure if this matters, but also tried switching to Intel with prime-
select, and after reboot still no luck.
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Can you try this with the proprietary nvidia graphic card driver installed?
Thanks
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Title:
Backlight Not Functional - Origin EVO 15-S (Clevo)
To
Boot with: video.use_bios_initial_backlight=0
Brightness does *not* change.
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Title:
Backlight Not Functional - Origin EVO 15-S (Clevo)
To manag
Since I have both Intel and Nvidia graphics, tried adding
/usr/share/X11/xorg.conf.d/80-backlight.conf described in backlight
debugging procedure.
Brightness did *not* change after reboot (or before).
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Boot with: video.use_native_backlight=1
Brightness does *not* change.
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Title:
Backlight Not Functional - Origin EVO 15-S (Clevo)
To manage noti
** Attachment added: "acpi_backlight=vendor ls -la
sys-class-backlight-intel-backlight"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1784878/+attachment/5170416/+files/acpi_backlight%3Dvendor%20ls%20-la%20sys-class-backlight-intel-backlight
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Boot with: video.use_bios_initial_backlight=0
Brightness did *not* change.
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Title:
Backlight Not Functional - Origin EVO 15-S (Clevo)
To manage
Boot with acpi_osi=
Brightness does *not* change, and no slider appears when using hotkeys.
Using the widget does not change brightness either.
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T
echo 8 > /sys/class/backlight/intel_backlight/brightness
Brightness did *not* change.
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Title:
Backlight Not Functional - Origin EVO 15-S (Clevo)
** Attachment added: "acpi_backlight=vendor ls sys-class-backlight"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1784878/+attachment/5170415/+files/acpi_backlight%3Dvendor%20ls%20sys-class-backlight
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** Attachment added: "dmidecode"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1784878/+attachment/5170401/+files/dmidecode
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Title:
Ba
** Attachment added: "userspace"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1784878/+attachment/5170398/+files/userspace
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Ba
** Attachment added: "fwts method"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1784878/+attachment/5170399/+files/fwts%20method
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** Attachment added: "results.log"
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** Attachment added: "powersave%0A"
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** Attachment added: "ssdt10.dat"
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** Attachment added: "fwts"
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Title:
Backlight No
** Attachment added: "ssdt8.dat"
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Ba
** Attachment added: "acpidump.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1784878/+attachment/5170381/+files/acpidump.txt
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** Attachment added: "ssdt12.dat"
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** Attachment added: "ssdt5.dat"
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** Attachment added: "ssdt11.dat"
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** Attachment added: "ssdt7.dat"
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Ba
** Attachment added: "ssdt3.dat"
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** Attachment added: "ssdt6.dat"
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** Attachment added: "dsdt.dat"
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Title:
Back
** Attachment added: "ssdt9.dat"
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Ba
** Attachment added: "ssdt4.dat"
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** Attachment added: "ssdt2.dat"
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Ba
** Attachment added: "ls sys-class-backlight"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1784878/+attachment/5170380/+files/ls%20sys-class-backlight
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** Attachment added: "ssdt1.dat"
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Title:
Ba
** Attachment added: "grep -r . proc-acpi"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1784878/+attachment/5170379/+files/grep%20-r%20.%20proc-acpi
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