38 lines
2.1 KiB
Markdown
38 lines
2.1 KiB
Markdown
[[!meta title="Correcting the multimedia keys mapping on the MacBook Air 4,2"]]
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## Introduction
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The mapping of the multimedia keys of the MacBook Air 4,2 (probably earlier
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ones as well) was
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[slightly off by one and had the Eject key mapped](https://lkml.org/lkml/2011/10/17/326),
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although the MBA does not have an optical drive.
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## Two trees available with fixes
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The patch against [Jiris for-next branch of the hid-tree](http://git.kernel.org/?p=linux/kernel/git/jikos/hid.git;a=summary) can be found
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in [my **mba42-fixes** branch](http://git.schottelius.org/?p=foreign/linux-jiri-hid;a=summary).
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The second tree is the one I use to run with the
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[[correct keyboard mapping and screen resolultion patches|macbook-air-42-touchpad-keyboard-correct-screen-resolution]], which contains the change in the
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[**keyboardmappingfix** branch](http://git.schottelius.org/?p=foreign/linux-keith-jiri-mba;a=summary).
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## General status / todo list
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The notebook is pretty good usable with the current patches applied. There are
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some gotchas, though, which I'll try to fix in the next time:
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* [network process hang issue in the **brcmsmac** driver](https://lkml.org/lkml/2011/10/18/145)
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* The mouse pointer does not move when the mouse button is pressed (probably a configuration problem of the synaptics touchpad)
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* Brightness is not adjusted in xorg when pressing FN-F1 (but can be done via **echo VALUE > /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-eDP-1/intel_backlight/brightness**)
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* Display is not switched off when lid is closed (acpi reports the lid event, though) (probably related to the previous problem)
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* Incorrect representation when using a Mini-Display-Port to HDMI adapter on external screen
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* No output on external monitor when using a Mini-Display-Port to DVI adapter
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* I'm not sure how to adjust the keyboard backlight correctly:
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* Correct map the ambient light values (0-255) to the keyboard light brightness (0-255)
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* Straight brightness=255-ambient_light does not look good
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* Probably off, when the lid is closed
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* See [kbsd](http://git.schottelius.org/?p=kbsd;a=summary) for an early idea of what can
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be done
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[[!tag net unix]]
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