Dell Duo Setup Guide

[piotr5]

I just finished setting up mine by following: http://knowledge.evot.biz/documentat...iver-on-ubuntu

only problem with that howto is it doesn't mention that beforehand you need to install linux-headers. then

ls -l /lib/modules/`uname -r`/build

to check if the make-files will find them for your current kernel. (those are ` characters above and not ' characters.) i.e. you will need to get the headers for exactly the same kernel-version your autoupdate installed last. if you have done everything right in this howto you will get a white cHD logo among your panel-applets. while playing a flash-video this will become somewhat blue. (strangely, after suspend it is grey again because of being turned off.)

I should also mention that #include <linux/delay.h> is already in the newest version, the other change mentioned in the howto isn't. just put it as the first thing in the file, or down below the comments where other #include lines are located. and maybe to the hackers, after compiling the driver there will be a complaint that the module isn't really written the way modules should be written, but it works anyway. guess there's still something to do before it can be included in the kernel. so you should check the changelog regularly. if there are any news, do a git pull

[JaseP]

Hi,

I might have a work around for the power/kernel oops problem.

I had the same problem, but solved it as folows:

First of all use the i386 and not the x64 version of ubuntu 12.04.

Still having problems i tried upgrading the kernel manualy, from kernel version 3.4 and up i am rarley having problems with connecting power or docking.

There are some rules:
-Boot on battery and you're fine plugging in and out the charger.
-suspend on battery = wake-up on battery, suspend with charger/dock = wake-up with charger/dock.

If you folow these basic steps, the kernel oops will be gone (most of the time). It will eventualy oops, but now it's more like 1 in 50 times, wich is better then every time.

I've been thinking about this... My understanding of the Kernel oops is that there are two instances of power devices being reported on the system (correct me if that's wrong),... Does anyone think a udev rule to basically ignore the extraneous power device might work to do an end-run around the oops???

[Bray90820]

About the charging issue the JolliOS kernel seems to work so maybe someone could have a look at it and see whats going on

[Caboose885]

Hi all!

Been a while since I've updated anything. There are some noticeable changes in 12.10 for our hardware. The power problem has been resolved. I can plug and unplug my computer without any crashes. I didn't do anything special either.

Also touchscreen works out of the box. However I would recommend installing the proprietary drivers from eGalax still. I hope since Ubuntu phone has been announced it will push touchscreen support in the full desktop version ever further.

Finally, I'm updating the guide. Trying to clean it up and add the new information. Sorry its taken so long. Hopefully I am back in the community again helping out where I can.

[piotr5]

nice to see this guide isn't dead. I made a new discovery: the accelerator driver is going into the official kernel! I can't await it, it's in the release-candidate of 3.9, so I guess it will take some time till ubuntu will pick it up. here's what I did do:

copy linux-master/drivers/iio/{accel,common}/ from the zip-file provided by https://github.com/torvalds/linux into drivers/iio of my currently used linux-sources 3.7.10 (and I also copied the magnetometer directory too, but it doesn't work). then I further copied linux-master/include/linux/iio into include/linux of my sources (I didn't overwrite any existing files though). alternatively just use the rc-version directly.

in menuconfig I did choose the st_accel_i2c driver and the trigger driver as modules (in drivers/iio). the buffer driver I did leave unchecked. (compilation error if I did build that.) then compile a new kernel and restart linux to use it.

modprobe i2c_i801
modprobe st_accel_i2c

in order to figure out what i2c to use I did do

cat /sys/class/i2c-adapter/i2c-*/name

to get

SMBus I801 adapter at 5000

at the end, i.e. the last entry in the /sys/class/i2c-adapter/i2c-* is the one I want, it's i2c-6 for me. after reading drivers/iio/accel/st_accel.h in the kernel sources I learned that the iio driver is only reacting to a device called "lsm303dlh_accel". therefore I did do

echo lsm303dlh_accel 25 >/sys/class/i2c-adapter/i2c-6/new_device

and automatically the device was detected and I got a new /sys/bus/iio/devices/iio\:device0 directory to play around with. for example I can do

while true ;do echo `cat /sys/bus/iio/devices/iio\:device0/in_accel_x_raw`, `cat /sys/bus/iio/devices/iio\:device0/in_accel_y_raw`, `cat /sys/bus/iio/devices/iio\:device0/in_accel_z_raw` ;done

and observe how tilting my duo will decrease z-axis and increase the otherwise zero-ish value of some other axis. windows uses that for triggering screen-rotation. (I wouldn't recommend parroting that though.) but I think it would be more important to have a program detecting when the duo is in free-fall, to turn off hdd like in windows...

[Caboose885]

I have slowly been working on migrating my tutorial to the wiki.

Here is the link.

Dell-Duo/Inspiron-1090 Wiki

This is now an "Opensource guide." Feel free to add and contribute to the wiki.