Kernel on Miek Gieben

Spontaneous wake ups from suspend

Sat, 27 Jun 2015 13:34:00 +0000

When I upgraded my Ubuntu 14.04 to use kernel 4.0 (and now kernel 4.1) it apparently got a new feature: it would wake up from suspend in the middle of the day…

This bug provides a good read and has pointers to articles with more background. I’m seeing this on my Macbook Air and I am still not sure what the root cause is. I’m also not sure if it is “Intel Rapid Start Technology”, as Apples don’t have a BIOS to speak off.

Short kernel compile howto for Debian/Ubuntu

Tue, 10 Sep 2013 08:18:00 +0000

Download the kernel’s source from http://kernel.org;
Unpack it somewhere (will use ~/src/linux-3.11 here);

Copy the config from the distribution over;

 cp /boot/config-3.8.0.30-generic ~/src/linux-3.11/.config

Apply any patches;
Go to the kernel source and create an up to date config.
```
 make oldconfig
```
Just use the defaults for all the questions you’ll get;
Compile the kernel into a debian package for easy installation and removal.
```
 fakeroot make-kpkg --initrd -j 8 --revision 3.11custom kernel_image
```
Install the resulting .deb file and reboot.

Macbook Air (6,1) 2013 model with Ubuntu

Sat, 31 Aug 2013 11:48:00 +0000

Assorted notes, not a step-by-step HOWTO!

How to get Ubuntu Raring (13.04) up and running on your shining new MacbookAir. Note some things are not working (yet). This is with 3.11:

audio (speakers don’t work, plugged in headset does work), however see this latest patch;
webcam (see http://mactaris.blogspot.co.uk/2013/07/webcam-settings-20-will-support.html for a list of changes, it is not a UVC device anymore);
after a resume the screen brightness only knows on/off.

Expectation for 3.12 (when released), everything is working, except: