Despite the errors the Kernel ran fine, and I witnessed a visible difference in
performance of LightDM after boot (Increased responsiveness and faster load
time) and an increase in boot speed.
This kernel is working well, but the buttons for both brightness, (and airplane
mode) are still unresponsive to acpi.
~ $ uname -a
Linux Asus-X540LA 4.8.0-040800rc3-generic #201608212032 SMP Mon Aug 22 00:34:39
UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
Sorry about my initial response to your post, I was looking for a more familiar
way of updating the kernel, but I was able to get it to work after following
the wiki link you gave me. Despite the errors during dpkg, the Kernel ran
fine, and I witnessed a visible difference in performance of LightDM after boot
(Increased responsiveness and faster load time) and an increase in boot speed.
This kernel is working well, but the buttons brightness (and airplane mode) are
still unresponsive to acpi. acpi_listen is still not responding to those
specific function keys. As per your request I will mark this as "Confirmed".
and add the tag 'kernel-bug-exists-upstream'.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Tags added: kernel-bug-exists-upstream
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https://bugs.launchpad.net/bugs/1618952
Title:
Display brightness keys not registered by ~$acpi_listen
Status in linux package in Ubuntu:
Confirmed
Bug description:
Brightness keys donot repond, Brightness controls on
xfce4_power_manager behave as expected. Either kernel is not
recognizing the fn+f5/f6 commands or their is a problem with my
configuration.
here is the event output of all of my fn+(f keys):
~ $ acpi_listen
button/volumeup VOLUP 00000080 00000000 K
button/volumedown VOLDN 00000080 00000000 K
button/mute MUTE 00000080 00000000 K
button/mute MUTE 00000080 00000000 K
PNP0C14:00 000000ff 00000000
PNP0C14:00 000000ff 00000000
PNP0C14:00 000000ff 00000000
button/sleep SBTN 00000080 00000000
button/sleep PNP0C0E:00 00000080 00000001
(As a side note, my bios has no configuration options for the function
keys.)
(On another note, it is worth noting the fn+f2 does not respond with
an event calling for airplane mode either, which is not important to
me but may be important for others, if this is fixed by any solution
here I will make note, though airplane mode may be a feature request
and not a bug.)
I have tried several options in the etc/default/grub file, these include:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash video.use_native_backlight=1"
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash video.use_native_backlight=0"
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=intel_backlight"
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi="
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=Linux"
I am using Mint XFCE Sarah (Ubuntu Xenial) 64-bit, xfce4_power_manager
was tested with all above configurations to both handle and not handle
display brightness keys. My Computer is an ASUS model is X540LA. I
am attaching a few files to help with this bug report.
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