This tip can be very useful for people like me who has over the PC into a notebook and a netbook (Aspire One) Multi-Core, as it gives us the ability to disable a core in the event that you are with a poor battery life. Disabling one core is our chance to earn some minutes and then finish writing and send such a mail.

To disable:

$ Echo 0 | sudo tee / sys/devices/system/cpu/cpu1/online

To enable:

$ Echo 1 | sudo tee / sys/devices/system/cpu/cpu1/online

To see if you are using a core or a more simply:

cat / proc / cpuinfo

I recently got an Acer Aspire One A150X, with embedded HSUPA modem, and say they are happy because with the penguin, when I have not encountered serious problems. As a distribution I installed Debian, then I tried Kuki, but I liked it, the rest is still in alpha. Finally I tried Linux4one, to which I offer my congratulations to all staff. By using this distro, I just noticed the problem with the connection through this modem, since it was added to form HSO, which is crucial for proper functioning. Known issue as evidenced by the discussions in the forum.

Giving the command lsusb, I get this:

ID 0af0: 7211 Option

but with the HSO module also work all these, as it is written on the site of reference.

(default_port_device (0 × 0af0, 0 × 6711)),
(default_port_device (0 × 0af0, 0 × 6731)),
(default_port_device (0 × 0af0, 0 × 6751)),
(default_port_device (0 × 0af0, 0 × 6771)),
(default_port_device (0 × 0af0, 0 × 6791)),
(default_port_device (0 × 0af0, 0 × 6811)),
(default_port_device (0 × 0af0, 0 × 6911)),
(default_port_device (0 × 0af0, 0 × 6951)),
(default_port_device (0 × 0af0, 0 × 6971)),
(default_port_device (0 × 0af0, 0 × 7011)),
(default_port_device (0 × 0af0, 0 × 7031)),
(default_port_device (0 × 0af0, 0 × 7051)),
(default_port_device (0 × 0af0, 0 × 7071)),
(default_port_device (0 × 0af0, 0 × 7111)),
(default_port_device (0 × 0af0, 0 × 7211)),
(default_port_device (0 × 0af0, 0 × 7251)),
(default_port_device (0 × 0af0, 0 × 7271)),
(default_port_device (0 × 0af0, 0 × 7311)),
(default_port_device (0 × 0af0, 0xc031)), / * Icon-Edge * /
(icon321_port_device (0 × 0af0, 0xd013)), / * Module HSxPA * /
(icon321_port_device (0 × 0af0, 0xd031)), / * Icon-321 * /
(icon321_port_device (0 × 0af0, 0xd033)), / * Icon-322 * /
(USB_DEVICE (0 × 0af0, 0 × 7301)), / * GE40x * /
(USB_DEVICE (0 × 0af0, 0 × 7361)), / * GE40x * /
(USB_DEVICE (0 × 0af0, 0 × 7401)), / * 0401 * GI /
(USB_DEVICE (0 × 0af0, 0 × 7501)), / * GMT 382 * /
(USB_DEVICE (0 × 0af0, 0 × 7601)), / * GE40x * /
(USB_DEVICE (0 × 0af0, 0 × 7701)),
(USB_DEVICE (0 × 0af0, 0 × 7801)),
(USB_DEVICE (0 × 0af0, 0 × 7901)),
(USB_DEVICE (0 × 0af0, 0 × 7361)),
(icon321_port_device (0 × 0af0, 0xd051)),

With Debian, for example, just a simple:

modprobe HSO

We begin by installing a few things:

apt-get install build-essential bin86 kernel-package libncurses5 libncurses5-dev fakeroot module-init-tools

apt-get install libusb-dev libusb + +-dev libusb + +-0.1-4c2 python2.5-dev

To overcome this problem with Linux4one, there are 2 roads. The first is to recompile the kernel with the usual method, described here. Once given the command make menuconfig, go under Device Drivers> Network device support> USB Network Adapters and go to modularize Option USB. Then, just to not to miss anything, always in the section Device Drivers> USB Support> USB Serial Converter, USB Driver for GSM Modularize. At this point, save, and then we will have to recompile the linux-headers and linux-image. Once installed with dpkg and restart will be ready to connect with our modem, but not before you download the three packages that we need hsolink, hsoconnect and Ozerocdoff. Latter to be installed with the classic:

tar zxf udev.tar.gz

cd udev

sudo make

sudo make install

Now put in / etc / modules

ppp_async

ppp_generic

pppoe

usbserial vendor = 0 × 0af0 product = 0 × 7211 (replace if yours is different)

then:

sudo gedit / etc / HSO-suspend.conf

and insert NONE instead of 5 seconds

reboot

On connection with HSOconnect will appear in the debug window where if all goes well should not appear errors. Box HSOconnect, go to profile-edit, and insert the 'appointing authority, in my case ibox.tim.it, the username and password, put two words at random. At this point we are ready to test things out with:

python-m hsoc

The second way is to download linux-headers and linux-image recompiled by me, and install them, and then proceed with the installation of hsolink, hsoconnect and ozerocdoff etc.etc. all downloadable here. With these simple steps to connect it did yesterday and today and never log off for hours, and I also downloaded a file of 150 megs, this precisely because I've done a rebuild on a clean install of Linux4one because in a previous installation, where I downloaded and compiled Hso driver and made more experiments and trials, the connection was fluctuating and s'impallava often, I managed a workaround to make it go through, but I found that the best method is what I just described on an installation clean, with the use of Hsoconnect

Important

Keep in mind that the lights on the 3G is working, then the little light should be green, otherwise the modem is not found.

Problems encountered:

I noticed that sometimes the device ttyHS1 disappears, but once restarted it all comes back OK, so it's best not to change anything in / usr / share / HSOconnect. I also noticed the problems of stability, but I'm checking some solutions including the patch from Alan Cox.

Updated:

It's all great, the signal is clearly more powerful than you navigate quickly. I reached a speed of 5.9 mega

in download and 1.3 upload.

Another detailed how-to written by me, found on the forum.