I'm also experiencing this problem. I had the following configuration: MacbookPro 8,1 13" laptop (2011) Dell UltraSharp U2715H LED monitor Ubuntu 14.04 Mini-Displayport (computer) to Displayport (monitor) connector
I had those annoying 2-3 second unpredictable intermittent blanks, driving me crazy. I used to have the problem with a Dell 24in monitor 2408WFP as well (same computer). I figured it was something to do with the monitor and bought the new monitor (since we needed a second one anyhow). But the problem persisted with the U2715H. I figured it might be something to do with the computer (anecdotally it seemed to occur more often when it heats up, though I'm not certain). I needed to change that old computer anyhow, so I bought an Intel NUC to replace the laptop. New configuration: Intel NUC NUC6i5SYH w/ 32GM of RAM Dell UltraSharp U2715H LED monitor Ubuntu 16.04 Mini-Displayport (computer) to Displayport (monitor) connector (same cable). Lo and behold... same problem! All that leaves is - the cable, or - the software. Now I just got myself an HDMI to HDMI cable to the Intel NUC. Just began testing. Hopefully the problem will be gone. Happy to test again later if someone fixes the bug--contact me <[email protected]> -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1313539 Title: [DisplayPort] monitor shows black screen and "no input signal" after turning the monitor off and on manually To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1313539/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
