Intel VAAPI howto with Leia v18 nightly based on Ubuntu 18.04 server
(2015-08-21, 11:33)negge Wrote: (very high bitrate H.264 4K video). Everything works perfectly (except for display rate switching on this particular screen, it only supports 60 Hz):

I don't have your monitor and maybe it's more complicated depending on how dp gets 60Hz but generally -

If your monitor has HDMI it may be worth plugging something and saving a copy of xrandr --verbose to see what modes it offers.

My monitor (acer gd245hq) doesn't mention 50Hz modes over DVI so I owned it for ages before I used HDMI and noticed that it did do 50HZ over that.

Now If I want 50Hz via DVI I just add a new mode with xrandr and it works fine.

Just as an example here's what I do, you would of course have to look at the details of modes offered over HDMI and use your output names as shown by xrandr.

Code:
xrandr --newmode "cea-50" 148.50 1920 2448 2492 2640 1080 1084 1089 1125 +HSync +VSync
xrandr --addmode DVI-D-0 "cea-50"
xrandr --output DVI-D-0 --mode "cea-50"
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Messages In This Thread
RE: New Era: VAAPI with EGL interoperation - by AndyFurniss - 2015-08-22, 22:45
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