4k capability?

If you're having trouble with your LattePanda Alpha & Delta, here's the place to get help.
Forum rules
If you have not found a solution, post a new issue. To speed up the process please let us know:
- Have you tried the solutions listed above?
- What board are you using? Standard (2GB RAM/32GB eMMC) or Enhanced (4GB RAM/64GB eMMC)?
- Have you tried any other solutions?
- How long have you had your board for?
- When did you first boot your board?
- Did it work ok before the issue occurred or has the issue always been there?
- Use images and videos to help us understand the issue where possible

If you are seeking RMA:
- Please open a new topic rather than hijacking someone else's thread
- Mark RMA posts with [DEFECTIVE] + <helpful description of issue>. We can then approve/disapprove each request
- Completed RMA cases will be marked with [CLOSED]
You can find the RMA guide [here]

Resolved Issues
- If you manage to fix an issue, please share your solution for the good of the community. It could help someone else in future.
- If an issue is resolved the thread should be marked as [RESOLVED]. We can then sticky the thread to help people in future.
Post Reply
User avatar
Therexershow
Posts: 13
Joined: Fri Dec 28, 2018 4:16 pm

Mon Jan 21, 2019 7:11 am

I understand the alpha supports 4K at 30hz , and when I boot up I Display at 4k. But when I do gaming , I can’t do a thing because it’s so choppy for audio and video. I’ve also watched tutorials and persons said you need a USB-C Hub with Display port out in order to render 4k. I don’t use that setup and just use hdmi out. And as I said, it renders 4k to desktop. Does anyone know why it can’t process things in 4 like simple games , or why others say you Display port out for 4k?
Thanks.

User avatar
ccs_hello
Posts: 664
Joined: Sat Oct 13, 2018 9:16 pm

Mon Jan 21, 2019 8:45 am

LP Alpha's Intel CPU/Integrated-GPU m3-7Y30's IGP can do

Max Resolution
HDMI 4096x2304 @24 Hz (1.4a)
DP 4096x2304 @60 Hz (1.2)
eDP 4096x2304 @60 Hz (1.4)

User avatar
Therexershow
Posts: 13
Joined: Fri Dec 28, 2018 4:16 pm

Mon Jan 21, 2019 4:05 pm

Any idea why games are so choppy on Retropie and it just can’t handle it?

User avatar
ccs_hello
Posts: 664
Joined: Sat Oct 13, 2018 9:16 pm

Wed Jan 23, 2019 12:31 pm

The way to read Intel (and many other companies) marketing material is as follows:

The IGPU (intel 615) is capable of supporting 4K monitor display refresh rate (up to) 60 Hz (if using DP interface), (under optimal condition.)

That statement probably can happily co-exist in a parallel universe with a computer game that is "capable" of doing 4K at 60 frame update rate.

In another word, LP Alpha does not come with a GTX2080 Ti w/ 6GB DDR5 memory dedicated graphics card.

User avatar
ccs_hello
Posts: 664
Joined: Sat Oct 13, 2018 9:16 pm

Wed Jan 23, 2019 12:56 pm

This YT video has some benchmark and game testing
https://www.youtube.com/watch?v=5REJCaayl6Y

User avatar
ccs_hello
Posts: 664
Joined: Sat Oct 13, 2018 9:16 pm

Wed Feb 27, 2019 2:17 pm

Note SR2ZY's HDMI oput is HDMI 1.4a which is limited to 4096x2304 @24 Hz.
SR347's HDMI does support HDMI 2.0/HDCP 2.2.

These two S-Spec both support DP++ at 4K 60 Hz.

P.S. more detailed info on Intel Graphics HD 615
https://www.notebookcheck.net/Intel-HD- ... 029.0.html

P.S. note that graphics IPGU is just an Intel HD615 and the CPU is a mobile processor,
talking about 4K @ 60 Hz is more or less just a mental exercise and that is all about it.

Post Reply