I've got two Samsung P2450 monitors and am seeing something similar. Monitor A was deployed as as the external monitor connected to the Ubuntu laptop docking station using DVI-D. Laptop has Nvidia GeForce Go 7600.
Monitor B was the secondary monitor on a Windows XP Gaming PC with Nvidia 9800GT using DVI-D to HDMI. It recently returned from a warranty repair because its backlight inverters had failed. Monitor B seemed to have a problem with losing sync for a second or two during intense gaming but also sometimes with web browsing (seemed to correlate to sudden changes to high brightness). The monitor would display the "HDMI" OSD briefly when it recovered. We swapped the monitors to determine if the problem was the XP PC's video card or monitor B. Monitor A suffered the same loss of sync issue but seemingly much less frequently. Monitor B on the laptop worked fine for several weeks until... ... this weekend the property lost power due to a lightening strike on the overhead lines. Since then it will frequently blank for about a second and then recover. It doesn't seem to be losing sync since there is no OSD after recover. This strikes me as more likely a failing capacitor issue but having found this bug it may be worth digging some more on the software side. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1011732 Title: External display blinks off periodically To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1011732/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
