activity wholist changelog info go back go back go forward go forward
now if you've got a pair of headphones... - consume until you bleed
you'd better get 'em on and get 'em cranked up
ajaxxx
ajaxxx
Add to Memories
Share
consume until you bleed
I've been poking at (tearing my hair out over) DisplayPort support for the various graphics chips under Linux. Rather than post something here that would soon be out of date, I made a status page on the wiki. The executive summary right now is No It Doesn't Work, but that should change soon.

DP actually promises to be a pretty cool technology. Compared to DVI it seems a bit overengineered, but that's sort of like comparing a car to a skateboard. Given the per-port licensing tax on HDMI, I think DP's eventual dominance is inevitable, but HDMI is pretty entrenched so that won't be any time soon. We'll just have to deal with the connector conspiracy until HDMI dies.

Tags: ,
music: depeche mode - wrong

Comments
neillparatzo From: neillparatzo Date: March 16th, 2009 01:05 am (UTC) (link)
Can DisplayPort do scRGB?
ajaxxx From: ajaxxx Date: March 16th, 2009 03:39 am (UTC) (link)
Sure. It's not explicitly called out in the spec, but then, no RGB colorspaces are. It does specify encoding for any of 18/24/30/36/48 bits per pixel, and the OS is expected to get the color primaries and white/black points from the monitor's EDID block.
From: (Anonymous) Date: March 16th, 2009 03:25 pm (UTC) (link)

Thanks

Thanks for this nice page. Hopefully more open drivers will support DP in the future. And I hope even more DP can stay parallel to HDMI. I needed to buy an HDMI cable yesterday, and it was awful expensive. I think the licenses are one reason. Don't know if DP cables are cheaper, though.
ajaxxx From: ajaxxx Date: March 16th, 2009 09:17 pm (UTC) (link)

Re: Thanks

Current market price has six foot DP cables at about $20, and six foot HDMI cables anywhere from $10 to $20. Presumably the demand for DP just isn't very high yet.

DisplayPort sources can drive HDMI sinks just fine with an adaptor cable, so there is an upgrade path. The reverse is not true.
pong! (x4) || ping?
$ ph
Adam Jackson
User: ajaxxx
Name: Adam Jackson
$ cat .plan
gpg: DD38 563A 8A82 2453 7D1F 90E4 5B8A 2D50 A0EC D0D3
$ nm -D
$ cal
Back November 2010
123456
78910111213
14151617181920
21222324252627
282930
page summary
Anonymous Thanks [+1]
tags