HDMI to VGA adapter issue – signal keeps cutting out

Good morning.

We have a rather annoying HDMI to VGA issue. Most of the school is still using VGA for projection, we would eventually like to go to HDMI but that it is going to be in a couple years at best. The laptops we are getting from the ministry of education only have HDMI ports now so we are using HDMI to VGA adapters.

The problem is that in many areas we are finding that when using an HDMI to VGA adapter that the image is cutting out every 10 seconds or so for a couple of seconds. It doesn’t seem to matter what model projector is in use (there are several), we have tried a couple of different adapters, we can’t pin down the cause.

Here is the adapter that we most commonly use – https://www.elive.co.nz/digitus-hdmi-a-vga-adapter-cable-15cm.php

Is there some really expensive adapters we need to make this work reliably? Is it just not a good idea to be using HDMI to VGA adapters at all? Is there even a difference between adapters, why do some of them cost a lot more than others?


Matthew Storr

Signal Messenger: Do they keep a copy of disappearing messages? [on hold]

Let’s assume that Alice and Bob have a conversation using Signal. They activated disappearing messages every 6 hours so all their messages disappear in both signal clients.

But are these messages stored in Signal’s servers? Are they stored in backups? Are they removed at any point from their servers?

Google – Rel Prev/Next No Longer Indexing Signal

For those using rel=prev/next for the purposes of indexing your multi page articles – it is not going to help anymore:


Spring cleaning!

As we evaluated our indexing signals, we decided to retire rel=prev/next.
Studies show that users love single-page content, aim for that when possible, but multi-part is also fine for Google Search. Know and do what’s best for *your* users! #springiscoming

Google Webmasters on Twitter
21 Mar 2019

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Samsung Galaxy NX Mirrorless Digital Camera 20.3MP (Android 4.4) Poor Wifi / Mobile signal issues

Does anybody have this camera that can provide some help with troubleshooting a wifi / mobile issues?

I have this camera, it was working well. The wifi and mobile reception have been good, after usage these have dramatically decreased to the point where transfer rates of images over wifi or mobile networks have become less than 1MB/s

If the camera is placed right next to the wifi router, this is dramatically improved.

I have performed a factory Reset, a roll back and tried both assigning static and dynamic IP addresses. There seems no difference in 2.4GHz or 5GHz networks.

can’t remove roaming letter above signal bars

I’ve researched a lot and I can’t find any solutions to this problem. A couple of months ago I traveled by plane, and when I arrived and turned off airplane mode (I have it always turned on) I had this r above the signal bars. I think it’s because I got outside my isp area when I was on the air, but now I’m back in my city and I can’t get rid of it. I’ve trying manually selecting the isp, turning on and off the roaming and the mobile data in the configurations but nothing seems to work. What else could I try?

Which version of Signal Desktop is legit?

I saw both of these in the apt sources. Since this is a secure communications app, what is the correct source to use for Ubuntu? Searching for Signal, I see:

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And lower:

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With these details:

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Before thinking this is an unnecessary abundance of caution, you can see there is an effort to create frauds out there:

  • Authoritative: https://github.com/signalapp
  • vs. presumably fake/nefarious: https://github.com/whispersystems

Data Valid signal in Verilog

I am trying to implement data_valid signal in one of my modules. So far I thought of a solution using counter. Also when I have a valid input I will turn on the enable pin to start processing data.

Lets say the module requires 5 clock cycles to produce the valid output data. The idea is to count till 5 clock cycles and after that setting the valid signal to high and then resetting the counter after providing the valid data.

Following is a short sample version what I want to do where I get the valid data after 1 cycle. But obviously it is not working perfectly and I can’t exactly point out where am I missing something.

Example code:

module control_unit (           input   [3:0] a,         input   [3:0] b,                     input   [3:0] m,                     input         clk,          input         enable,          input         nreset,         output        data_valid,          output  [7:0] o );          reg [7:0] r1;         reg [4:0] c;         reg  count;          always @(posedge clk or negedge nreset)             begin             if (~nreset) count <= 1'b0;             else if (enable)                             count <= count+1'b1;             else count = count;             end          assign data_valid = (count == 1'b1) ? 1'b1 : 1'b0;           always @(posedge clk)             begin                 c <= a+b;                 r1 <= c[3:0]*m;             end               assign o = r1;  endmodule 

Test bench code:

`timescale 1ns/10ps module tb_control_unit (                     );    reg clk;  reg enable;  reg nreset;  wire data_valid;  reg[3:0] a,b,m;  wire [7:0] o;   control_unit control_unit_i (             .clk(clk),             .enable(enable),             .nreset(nreset),             .data_valid(data_valid),             .a(a),             .b(b),             .m(m),             .o(o)                   );    parameter CLKPERIODE = 10;   initial clk = 1'b1;  always #(CLKPERIODE/2) clk = !clk;  initial enable = 1'b1;   initial begin   a = 4'b0001;  b = 4'b0001;  m = 4'b0010;  //#10 nreset =1'b0; //#20 nreset =1'b1;  #20 a = 4'b0010;  b = 4'b0010;  m = 4'b0001;  #100 $  finish(); end  endmodule 

Please note: The current state of the code represents a version of my many trials based on my beginner skills.

The problem I am facing is that, the data_valid signal is not providing any output properly in the first few clock cycles and my counter is out of sync due to that (Probably the assign statement is one of many reasons?)

To sum it up,

  1. valid_input arrives then ==> enable=1,
  2. Clock cycle count and calculation starts in parallel,
  3. After 5th clock cycle: final calculation done, data_valid=1,
  4. Counter resets,data_valid=0, waiting for next valid input and enable=1.


Is there anything wrong with my concept? How can I maintain the proper counting from the very beginning depending on my control signals?

Please keep in mind, end of the day I will do synthesis and the condition of my project is to use least area.

So, what will be the best way to implement the condition: “if count==5”, “data_valid <=1’b1”?

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