[ASUS UX305FA] Some Fn+ Keys Not Working

Carlo Abelli, thank you for reporting this and helping make Ubuntu better. To see if this is already fixed in a later version of Ubuntu, could you please test http://cdimage.ubuntu.com/daily-live/current/ and advise to the results?

After fresh install of 15.04 the problem persists. Seems to be same result for acpi_listen with no output appearing. Volume buttons and others still functional but no brightness function keys.

Carlo Abelli, could you please test the latest upstream kernel available from the very top line at the top of the page (the release names are irrelevant for testing, and please do not test the daily folder) following https://wiki.ubuntu.com/Kernel/MainlineBuilds ? It will allow additional upstream developers to examine the issue.

If the test did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags by clicking on the yellow circle with a black pencil icon, next to the word Tags, located at the bottom of the report description:
kernel-fixed-upstream
kernel-fixed-upstream-X.Y-rcZ

Where XY and Z are numbers corresponding to the kernel version.

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-X.Y-rcZ

Please note, an error to install the kernel does not fit the criteria of kernel-bug-exists-upstream.

Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results.

Thank you for your understanding.

Tested with 4.1.0-040100rc6-generic #201506010235. Problem persists. Please let me know if there is anything else I can do!

Carlo Abelli, the issue you are reporting is an upstream one. Could you please report this problem to the appropriate mailing list (linux-input) by following the instructions verbatim at https://wiki.ubuntu.com/Bugs/Upstream/kernel ?

Please provide a direct URL to your e-mail to the mailing list once you have made it so that it may be tracked via http://vger.kernel.org/vger-lists.html . It can take a day for the new e-mail to show up in the respective archive.

Thank you for your understanding.

Forgot to add a subject line but here is the thread:

http://www.spinics.net/lists/linux-input/msg38966.html

Sounds like you have the same problem as me. (Asus UX501JW)

I was given a workaround from linux-input. It enables brightness keys and airplane key.

Set boot parameter to "acpi_osi="

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1460088

I saw your report and I had tested this with my previous version 14.04 to no avail. It appears that in the new version 15.04 this option added to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub does enable the airplane mode button but the brightness controls still remain inactive (including using acpi_listen). Thank you for your suggestion though!

I will also mention that I have tried acpi_osi=Linux and acpi_backlight=vendor which both do nothing. In addition a side effect of acpi_osi= is that while it enables my airplane mode button it renders the brightness slider in System Settings useless so for now the tradeoff is not worth it as brightness control for me is more important.