Comment 52 for bug 1256511

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In , Raymond (superquad-vortex2) wrote :

do you mean your DELL U2713HM is connected through DVI or VGA since it support DP and HDMI ?

CONNECTIVITY
1 Dual Link Digital Visual Interface connectors (DVI-D) with HDCP
1 DisplayPort 1.2 (DP)
1 High Definition Multimedia Interface (HDMI)
1 Video Graphics Array (VGA)

you have to post the output of alsa-info.sh and xrandr --verbose