Hello.

I've got ThinkPad T520 4243-FS9, it has a FullHD screen with the resolution 1980x1020.

I always use external monitor, which has much less DPI, and unfortunately, Linux can't handle that normally: there's no good way to support monitors with different DPI. :( So I consider replacing the screen with the usual HD resolution: 1366x768, e.g. it's 96 dpi, which is pretty fine for me.

I asked at https://www.laptopscreen.com , and they reported that the screen I'm looking for is http://www.laptopscreen.com/English/model/IBM-Lenovo/THINKPAD+T520+4243/?hash=915842 , but they also said that I'll need a different video cable:

> If you wish to use the lower resolution screen in the laptop you will first need to change the video cable in the laptop to a standard HD channel cable (we do not stock video cables, or have cable model info) capable of properly running the lower resolution screen, the current video cable in the laptop will not support the lower resolution screen resolution.

But in this thread https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T/Upgrading-T520-screen-from-1366-x-768-to-1920-x-1080/td-p/477549 , I see that the guy edit1754 reported:

> I performed a 1366x768 to 1920x1080 display upgrade on a friend's W510, and can confirm that, at least for his laptop, the cable for the 1366x768 display is a 40-pin dual-channel LVDS cable that will support a 1920x1080-resolution display.

So is it possible to say for sure, do I need for different video cable or not? Serial number of my laptop is: R9T7RV4.

Thanks in advance.

Sad to hear that... Good  luck with the downgrade, and make sure you get a panel with a proper Lenovo FRU#

-