Somebody has experience with Trisquel in a Lenovo Thinkpad T520?

I do not own a Thinkpad T520 but I looked at the specifications.
http://support.lenovo.com/nl/nl/documents/pd015761

According to h-node.org no wifi card from Intel is supported. In my search h-node confirmed these cards do not work.
PCIe Half Mini Card Intel Centrino Ultimate-N 6300
Intel Centrino® Wireless-N 1000
Intel Centrino Advanced-N 6205
Intel Centrino Advanced-N 6300

I do not know about
Wireless WAN Intel Centrino® Advanced-N + WiMAX 6250

It seems that Lenovo blocks user from replacing the wifi card of their own choice.
https://forums.lenovo.com/t5/T400-T500-and-newer-T-series/Best-WiFi-Card-for-T520/td-p/709823

According to ebay the bluetooth chip is 60Y3275. Cant find if it works.

The laptop can come with a Nvidia graphics.

https://wiki.debian.org/InstallingDebianOn/Thinkpad/T520/wheezy
https://wiki.debian.org/InstallingDebianOn/Thinkpad/T520/squeeze

A model without Nvidia graphics and use a external wifi card the laptop seems to work with Trisquel.

The best part with T520 is that it is the last Thinkpad with small trackpad and a good keyboard.
https://www.youtube.com/watch?v=jb7p3VkQCOo

Hello how are you? According to this [1] the t520 has got

*an intel wifi(?), if so that will not work. If this Lenovo model has a whitelist for wifi cards potentially preventing you from installing a wifi card that works in freedom, you might have to use an external usb wifi adapter.

*dual GPU (intel/nvidia), see if you can disable nvidia in BIOS setup. If you're feeling particularly adventurous you could explore http://bumblebee-project.org/

Besides those it should probably work fine. If you can get your hands on one, it's easy to test with a live Trisquel USB.

1 http://shop.lenovo.com/us/ww/pdf/t420_t520_datasheet.pdf

For what it's worth, I recently purchased a Lenovo ThinkPad T420 with *indows 7 preinstalled, shrank the *indows portion of the hard drive wiith the *indows disk management tool, and then installed Trisquel 7 from the LiveCD into the now-unused disk space, seamlessly and with no hassles. I use the appropriate ThinkPenguin USB wifi, and that works fine, too. Just about anything for which I would previously have needed *indows can be done as well or better with Trisquel and its apps, except for voice recognition.

These libre conversion app's have a long way to go.

I tried an OCR engine ... which converted the .JPG file (about 100 words from a "screenshot" made with a digital camera) nearly flawlessly to a text version that seemed to have no errors at all, but then all I could do was save it as .XML ... but I couldn't find a practical way of getting rid of the ten-fold bloat of formatting data in order to see a plain text rendition that I could paste into an email. It would have been quicker just to type 'em out myself.

Back to voice recognition. The only functional libre speech-to-text project I could find hasn't been maintained since 2010. There are a lot more in various states of development.

I installed Tegaki Recognize just to try it out ... about that, more later.

Little did I know ... Tegaki Recognize is for Chinese & Japanese charcters only.

Turns out that just plain old _handwriting_ is next to impossible (http://en.wikipedia.org/wiki/Handwriting_recognition).

A friend was attempting to analyze handwriting fifty years ago by converting it to accelerations and velocities with analog electronics ... and it was driving him crazy (http://www.worldcat.org/title/experimental-studies-of-handwriting-signals/oclc/227410416 & http://www.researchgate.net/publication/37595582_Experimental_studies_of_handwriting_signals).

Of course, the US Postal Service has been doing that for many years ... but all your writing has to be coded base ten.