Comment 11 for bug 1313539

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david6 (andrew-dowden) wrote : Re: monitor shows black screen and "no input signal" after turning the monitor off and on manually

This issue is possibly specific to DisplayPort, and not just a duplicate of bug #1308105.

I have just upgraded my monitor, and due to higher screen resolution, was forced to change from DVI (and a KVM) to DisplayPort.

The monitor will NOT sleep, and attempting to workaround by power-off/on (when unneeded) hits THIS bug. Setting the monitor to sleep (eg. powersave timer) also triggers THIS bug. The ONLY fix being to power cycle the PC.

However, the most common workaround I have found generally says: "Don't use DisplayPort, use DVI Dual-Link".

ALSO, if bug 1308105 is the cause, where is the fix? When will it arrive?

This appears to be a xfce4 regression bug, and specific to DisplayPort ..