Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

SX20 / C20 Presentation Problems

Hi All,

We have found two bugs, we have tested and it is apparent on both TC6 and TC7.

First bug, when we present from HDMI, then switch to VGA then switch back to HDMI it doesnt work ( easier explained below )

First Presentation - HDMI - Works fine

Switch to second presentation - VGA - Works fine

Switch back to first presenter - HDMI - Does not work

After playing about, we got it working on HDMI using a signal generator. However, this constantly sends out a signal and does not require any sync for the E-DDC etc ( I believe ). This only happens on SX20 and C20, tested this on a C40 with the same laptops and this works fine.

The second bug, it looks like mini HDMI does not work on SX20s ( still waiting to test C20 ). I know some of the pins are in a different order, I wonder if this could be the problem.

At the moment, our client and our stock are dell laptops. We are going to be testing some more today but really looking to see if anyone else has had this problem?

Many thanks in advance,

CreatePlease login to create content