xrandr --output DP1 --mode 2560x1600 --above LVDS1 --set audio on
when it's previously working does immediately make the monitor black out, and using '--set audio off' does not bring it back, nor does soft power cycling the monitor or unplugging/replugging it.
I can see some reports of people complaining about dp/audio problems under windows with the U3011, but it's hard to tell how much they indicate a real hardware/firmware problem vs windows driver problems or something else.
> It seems that the Nvidia based implementation at least with Displayport "++" out will only support an audio signal being passed over displayport to an external monitor that is no high resolution than 1080HD, or 1920x1080.
So I wonder if there is some way for Linux to know not to try this, preferably without needing special user configuration:
* don't do audio above a certain resolution?
* ... on specific hardware models?
* don't do DP audio at all by default?
Running
xrandr --output DP1 --mode 2560x1600 --above LVDS1 --set audio on
when it's previously working does immediately make the monitor black out, and using '--set audio off' does not bring it back, nor does soft power cycling the monitor or unplugging/ replugging it.
I can see some reports of people complaining about dp/audio problems under windows with the U3011, but it's hard to tell how much they indicate a real hardware/firmware problem vs windows driver problems or something else.
http:// en.community. dell.com/ support- forums/ laptop/ f/3517/ p/19370516/ 19844480. aspx
> It seems that the Nvidia based implementation at least with Displayport "++" out will only support an audio signal being passed over displayport to an external monitor that is no high resolution than 1080HD, or 1920x1080.
So I wonder if there is some way for Linux to know not to try this, preferably without needing special user configuration:
* don't do audio above a certain resolution?
* ... on specific hardware models?
* don't do DP audio at all by default?