The issue still exists in 16.10. Fresh install, made just a few hours
ago.
The workarounds don't even make the brightness keys work. The system
shows the brightness popup, which responds to the brightness keys, but
the actual brightness doesn't change.
Changing brightness by piping a number into
*** This bug is a duplicate of bug 1329510 ***
https://bugs.launchpad.net/bugs/1329510
Public bug reported:
Same bug as https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1329510
Was asked to use the "ubuntu-bug linux" to post this along with the laptop info.
Fn + F5 or F6 is supposed to l
Alright, that's done. It's bug number 1651629
I've marked it as a duplicate of this one, and subscribed you to it.
If there's anything else I can do to help get this fixed, just let me
know.
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** Tags added: kernel-bug-exists-upstream kernel-bug-exists-upstream-4.9
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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Sorry about that, I thought I was already on 506 for some reason.
I updated to 506, and tested with the 4.9 kernel, and the issue still
persists.
The output from the commands was:
X200MA.506
04/15/2015
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Tags removed: bios-o
Since I forgot to add this before posting, I should specify that I made
sure to test those parameters with the mainline 4.9 kernel, and not just
the standard Ubuntu one.
Both gave the same results.
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That does not make the brightness keys work, unfortunately.
Using those causes the keys to be recognized by the system, and the
popup showing the brightness level will come up and indicate that the
brightness is being changed, but the actual screen brightness doesn't
get changed.
Using those para
Booting with "acpi_backlight=vendor", the brightness keys do nothing,
and the gnome brightness slider breaks.
The /sys/class/backlight/intel_backlight/brightness file still works.
I don't know if it's important, but the "max_brightness" is 7812, which might
be an unusual range. Setting brightness
** Attachment added: "lslabacklight"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1651629/+attachment/4794924/+files/lslabacklight
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Using "acpi_backlight=vendor" and also creating the "80-backlight.conf"
file with the contents shown on that page, results in the brightness
keys still doing nothing, and the gnome brightness slider not working.
The /sys/class/backlight/intel_backlight/brightness file still works
fine though.
I t
With just "video.use_bios_initial_backlight=0", the brightness keys do
nothing, and the gnome brightness slider works.
With just "acpi_osi=", the brightness keys are recognized, and the
brightness meter changes, but the actual screen brightness doesn't
change at all. The gnome brightness slider al
Okay, I've sent the report. I'll keep an eye on the mailing list
archives and post a link when it's added there.
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Title:
[Asus X200M
Okay, the archive has it, and it's here:
https://www.spinics.net/lists/linux-acpi/msg71030.html
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Title:
[Asus X200MA] Brightness key
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