Skip to main content

[Follow-up] Quest of enabling hotkeys on ASUS Laptops

Resuming for the previous topic, with the help of an Arch user and one of kernel maintainers, it turned out the failure of hotkeys functions [Fn] is due to a Linux ACPI bug. Further investigation revealed a bad practice from BIOS vendor and unexpectedly a new challenge in Linux kernel world as quoted:
However this report indicates us another gap (except the enumeration order gap):
If the namespace EC (DSDT EC in short) is not ready, EC access availability can be kept 
using the ECDT EC. In Linux, that requres _Qxx control methods to be registered for
the ECDT EC. I have never seen a Linux EC driver version doing this before,
_Qxx registration is only invoked in acpi_ec_add(). So this bug indicates a gap for Linux.
Essentially, what is initially a bug related for non-functional hotkeys for ASUS X550Z laptop revealed a much more deeper issue related Linux ACPI. It is the first time I reached that level of testing in kernel world with the help from upstream kernel.

A built kernel with an attempt patch to resolve ACPI EC problem is on COPR repository. It willl take longer to complete before testing the patch which will hopefully restore hotkeys functionality on some modern laptops especially ASUS. A suivre...
Labels:

Comments

Post a Comment

Popular posts from this blog

Sun's promise to open source Java vs GCJ

According to this Press Release via OS News , it appears Sun Microsystems allow the redistribution of their Java development for Linux distributions under a new license called Operation System Distributor's License for Java or in short "Distro License for Java". Currently, only binaries are licensed as the source code is not available for the public although SUN promise to open source Java . I wonder if that announcement will affect the whole GCJ on which Fedora Project is focusing. Pour les francophones: Selon cette note de presse via OS News, Sun Microsystems permet la redistribution des binaires Java pour les distribution de Linux sous la nouvelle license nomm&ecaute;e License des distros pour Java . Je me demande si cette annonce affectera le développement de GCJ.
Post a Comment
Read more

GNOME extension Screen Autorotate available

 While waiting for a bug fix affecting majority of 2-in-1 laptops running on GNOME Wayland session, gnome-shell-extension-screen-autorotate is now available in Fedora repository and EPEL 9 . Give a try on your device Possibly this extension will get added on the incoming Fedora Design Suite 39 as default for the owners of convertible laptops.
Post a Comment
Read more

Wayland support coming to Blender for Fedora 37

As mentioned on Phoronix' article ,  Blender received Wayland support on Blender 3.3.1 for Fedora 37 as an update in preparation of the incoming version 3.4 next month. The update has a dependency of libdecor , a client-side decoration for Wayland in addition of DBus for the cursor theme. Currently, the window decoration may have yet to use the system theme but remains functional as intended.
Post a Comment
Read more