@Acer-Manny I couldnt see how to PM you. I saw you replying to a closed post about the same issue I am having. My XB321HZ would flash green and purple lines down the screen when coming out of sleep or when gaming (usually happens once every couple of hours). On the previous thread you said there was a fix that required the monitor being sent to a repair centre. I have just recieved my monitor back today from repair. According to the documentation a fault was found in the main board and it was replaced. I have just setup the monitor and I am still getting the flashing lines when the computer comes out of sleep. To me it looks like the issue hasn't been resolved. I am going to test it in games over the next few days to see if it still does in games (which I am more bothered about). If it does what should I do? My case id is XXXXXXXN
[Post edited to remove
inappropriate or personal content -Acer-Manny]