Posts by Ostrymiecz

It's not solved in any manner. Disabling VDPAU video mixer is a workaround and it works only on Kodi 17 not on 18.

OK Milhouse, here are the results from your Leia test builds:

#821 – Kodi set to 1080P res, VDPAU video mixer enabled, playing 2160P file results in res set to 1080P/24p – bugged

#821 – Kodi set to 1080P res, VDPAU video mixer disabled, playing 2160P file results in res set to 2160P/24p but screen is green all the time. Sound is OK, but no picture. Just green screen all the time – bugged

#822 – Kodi set to 1080P res, VDPAU video mixer enabled, playing 2160P file results in res set to 1080P/24p – bugged

#822 – Kodi set to 1080P res, VDPAU video mixer disabled, playing 2160P file results in res set to 2160P/24p but screen is green all the time. Sound is OK, but no picture. Just green screen all the time – bugged

#831 – Kodi set to 1080P res, VDPAU video mixer enabled, playing 2160P file results in res set to 1080P/24p – bugged

#831 – Kodi set to 1080P res, VDPAU video mixer disabled, playing 2160P file results in res set to 2160P/24p but screen is green all the time. Sound is OK, but no picture. Just green screen all the time – bugged

It seems that it simply the same as in Kodi 17.4. Maybe even slightly worse because disabling VDPAU video mixer gives green screen now and this worked in 17.4 (for some reason).

Edit: Disabling VDPAU acceleration also solves this problem.

Done but looking at Fritsch's answer there is no solution for me

Last question Milhouse

If I set Kodi UI resolution 1080P and play 4K file it switches to higher resolution and when I stop it, it goes back to 1080P. How can I "reverse" it? So if I set 2160P resolution on Kodi UI and play 1080P file. Then Kodi doesn't switch resolution to LOWER one and simply plays that file on 2160P.

TVs got much better scaling algorithms than Kodi so it would be much better if Kodi would always switch resolution for played media based on "whats in the file" and regardles of currently set UI resolution. If its 1080P then switch to 1080P and if its 4K switch to 2160P. Problem is in Kodi UI. I must say that UI in 2160P on 4K TV looks sharp and beautiful while at 1080P TV scales it up and this looks so-so.

OK. I'll test #821, #822 and #831 builds today then and report here. Then I'll create ticket in trac if needed.

About HDR – so it's a long way to go and I've got time and simply I can stay with LE right now. Or I can choose Kodi DSPlayer build on Windows with madVR. Then I think i could play HDR movies properly?

Thanks Milhouse. Notice that currently I'm using Kodi 17-rc1 on LE 8.1.0 build with nvidia 384.59 driver. The bug is present on that setup.

I will test LE x86 test builds today. I'll check 0821, 0822 and 0831 and report back here.

My question about Windows was about future of Kodi and 4K/HDR. Klojum said that nvidia in Linux is 8 bit only so I guess no HDR? What about Windows where I can enable HDR in nvidia control panel. Is Kodi capable of using that feature(s) (10 bits) on Windows?

What if I install Ubuntu, latest nvidia driver 384.69 and Kodi from PPA? Will it be the same as in LE 8.1.0 right now?

And lastly? What should I do if Ubuntu will be the same as LE. Use Kodi on Windows?

And another thing. When Kodi is set to full HDMI color space (0-255) and 2160P resolution then TV stops auto recognizing it as full color space. You have to set TV to full color space by hand. This problem doesn't exist when Kodi is set to 1080P. This could be nvidia driver bug I think?

Well I see that 4K is somehow borked on Linux/nvidia right now.

I got another clue. If I disable Prefer VDPAU video mixer then resolution switches properly to 2160P on 4K movies. Does this helps anyhow?

Well I can provide debug logs. What does attached in first post logs say? Nothing?

Anybody? Any LE dev?

Hi,

I've got new TV and GT 1030 card on my LibreELEC PC. I have turned on "Sync to display" and "Adjust refresh rate" options but Kodi behaves not like I would like to.

If I play a 1080P/24P file then TV switches to proper resolution. So it stays with 1080P and just adjust refresh rate to 24P. Everything here is OK. But if I play a 2160P/24P file then Kodi stays on 1080P resolution.

I can bump up Kodi UI resolution from 1080P to 2160P. 4K movies will be OK, but then Kodi won't set proper resolution for 1080P movies.
Tried same thing on Windows and there everything works like it should. How can I fix this in Linux/LibreELEC?
I'm using latest LibreELEC v8.1.0 with GeForce GT 1030. Kodi UI is running at 1080P.

Here is a debug file. Firstly I've played Game of Thrones which is 1080P file and then Logan movie which is 2160P.

fritsch from Kodi forum asked other user to test it also on intel GPU:

Quote

I checked: https://github.com/LibreELEC/LibreELEC.t...di/patches and there is no removal of this functionality.

Can someone with an intel setup reproduce?

Todo:
- Set kodi to 1080p60 or some other 1080p mode
- Enable Adjust Refreshrate to match Video
- Play a 3840x2160@24 video

What you need:
- A 4k TV and gpu that can output 3840x2160@24

Thanks.

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And some user responded:

Quote

I tested with this sample video (both webm and AVC, [email protected]) : Panasonic G85 4K/24p Sample Footage - YouTube and with the Big Buck Bunny 3840x2160@30 Hz sample.

Kaby Lake i7-7700. Ubuntu 17.04 with Kodi 17.4 from the PPA. Kodi was set to 1080p59.94. Adjust Refresh Rate to match video was on. Playing the duck sample switched to 3840x2160p23.976 Hz. It switched back to 1080p59.94 when done playing. Playing the Big Buck Bunny sample switched to 3840x2160p30. It also switched back to 1080p59.94 when done. The resolution up switching is working fine for me.

So i confirm that resolution switching is broken on nvidia GeForce GT 1030 using latest LE v8.1.0 and VDPAU. It doesn't work on LibreELEC. Please note that on Windows it works like it should (using Windows 10, same GT 1030 card using latest nvidia drivers and Kodi 17.3 and 17.4).

I've got a problem with auto resolution switching on latest LibreELEC v8.1.0. Fritsch from Kodi forums told me to repost/report this bug here.

Maybe I'll point to my problem directly on Kodi forums.