<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - Detects Load on output and blinks screen every ~30secs" href="https://bugs.freedesktop.org/show_bug.cgi?id=34220#c11">Comment # 11</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - Detects Load on output and blinks screen every ~30secs" href="https://bugs.freedesktop.org/show_bug.cgi?id=34220">bug 34220</a> from <a class="email" href="mailto:imirkin@alum.mit.edu" title="Ilia Mirkin <imirkin@alum.mit.edu>"> Ilia Mirkin</a> <pre>Sounds like the bug here is that nouveau causes the VGA display to blink on/off when checking whether it is connected. (And, to exacerbate the issue, there's something polling every 30s to see if the monitor is connected/what modes it has or something.) Could someone with an affected monitor try to cat /sys/class/drm/card0-VGA-0/status (or whatever card/connector the thing is on) and see if that action causes the monitor to blink on/off? If not, check /sys/.../modes and .../edid and .../dpms. I'm guessing at least one of those will cause the blinking issue. My understanding of the VGA DDC stuff is that the monitor doesn't even have to be powered on in order to get at that stuff (I guess power is supplied in the VGA cable itself), much less have to try to show a picture. Although perhaps not all monitors comply with that ideal. BTW, please be sure to test it out with the latest kernel, just in case this has been fixed.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>