Created attachment 749064 [details] Picture of the green lines. Description of problem: On my work laptop, when connected to the dock with two Dell monitors via DVI, occasionally after login my right monitor will exhibit rapidly flashing green horizontal line noise over the whole screen area. The left one is not affected. This continues until I go into System Settings -> Display and disable/enable the monitor, at which point the lines go away. When idling on GDM, or during bootup this does not happen. Does not happen every time; hit-or-miss when logging in. Monitors are matching, behavior not exhibited anywhere outside of the OS (POST, etc.). xrandr output for monitors: HDMI2 connected 1680x1050+1680+0 (normal left inverted right x axis y axis) 473mm x 296mm 1680x1050 60.0*+ 1280x1024 75.0 60.0 1152x864 75.0 1024x768 75.1 60.0 800x600 75.0 60.3 640x480 75.0 60.0 720x400 70.1 HDMI3 connected primary 1680x1050+0+0 (normal left inverted right x axis y axis) 473mm x 296mm 1680x1050 60.0*+ 1280x1024 75.0 60.0 1152x864 75.0 1024x768 75.1 60.0 800x600 75.0 60.3 640x480 75.0 60.0 720x400 70.1 Version-Release number of selected component (if applicable): xorg-x11-drv-intel-2.21.6-1.fc18.x86_64 How reproducible: Seems to happen at random on login. Steps to Reproduce: 1. Boot machine. 2. Log in. 3. Right monitor output will have rapid green lines. Actual results: Expected results: Additional info: I captured a video of it here: https://www.youtube.com/watch?v=QW1GDE9Bp2s
Forgot to mention, IvyBridge Mobile graphics. lspci info: 00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
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Fedora 18 changed to end-of-life (EOL) status on 2014-01-14. Fedora 18 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.