<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - DELL U2415 monitor detection issue" href="https://bugs.freedesktop.org/show_bug.cgi?id=89420#c3">Comment # 3</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - DELL U2415 monitor detection issue" href="https://bugs.freedesktop.org/show_bug.cgi?id=89420">bug 89420</a> from <a class="email" href="mailto:bugs.freedesktop@nexigon.net" title="Michiel Janssens <bugs.freedesktop@nexigon.net>"> Michiel Janssens</a> <pre>Just an update. At the moment I'm running a newer kernel. 4.1.1-040101-generic Behaviour has changed. I don't have to use the extra kernel parameter drm_kms_helper.edid_firmware. Without it the monitor seems to be detected properly. So resolution is as it should be 1920X1200, at boot time, and also when logging in. However the power save issue still remains. - when the system tell the monitors to go to sleep, they both do, but when wakingg the screens, the U2415 offten won't come out of power save mode, the system is very sluggish at that moment. I'm not able to trigger the monitor to come out of standby. Not by calling xrandr in terminal, switching between VT's, or powering down the monitor. After plugging out the displayport of the U2415, the system becomes responsive again. - after a system suspend to ram the same as above happens. With a reboot everything seems normal again, and in the event the U2415 has gone into power save mode during login, switching between VT's will normally get it out off power save.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>