Hello everyone,
I have the 2G/32G LP . When I use the LP with the Waveshare 7.9 inch HDMI touch screen, the screen disappears completely after the tearing. When I run LP with another screens it works fine and
the Waveshare screen is working properly when I use it with another PC.
I tested hardware and software for a long time,
I changed the screen resolution settings, update drivers and gave 5V- 5.7V/ 2A - 3A to the input of the LP but
I could not find the problem. I wonder the CPU display driver used in this version is supported or not, if I switch LP 2G/32G to Alpha 800 series the problem will disappear?
Waveshare Screen: https://www.waveshare.com/wiki/7.9inch_HDMI_LCD
WaveShare Chip : Toshiba 358779XBG
HDMI Problem
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- You can find the RMA guide [here]
- Please check if your question has already been answered before opening a new thread. If it has not, please verify the following:
- Have you tried a hard reset?
- Are you using a 5V@2A+ power supply and a high quality USB cable?
- Have you tried powering the board through the CN2 headers?
- Have you tried a cooling solution such as a fan or heatsink?
- Have you tried reinstalling drivers?
- Have you tried reloading the operating system?
- Have you tried flashing the BIOS?
- Are you able to flash the BIOS at the hardware level?
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.
What does troubleshooting support?
- Hardware queries
- Hardware issues that weren’t caused by you, e.g DOA board
- Windows 10 specific issues
- Discussion tone should be kept polite and focused on facts
- Vulgar language or flaming constitutes an instant ban
- Please note we cannot support PM requests for help
- Members are asked to post in English only so that posts can be well received and properly monitored
- You can find the RMA guide [here]
- Please check if your question has already been answered before opening a new thread. If it has not, please verify the following:
- Have you tried a hard reset?
- Are you using a 5V@2A+ power supply and a high quality USB cable?
- Have you tried powering the board through the CN2 headers?
- Have you tried a cooling solution such as a fan or heatsink?
- Have you tried reinstalling drivers?
- Have you tried reloading the operating system?
- Have you tried flashing the BIOS?
- Are you able to flash the BIOS at the hardware level?
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.
What does troubleshooting support?
- Hardware queries
- Hardware issues that weren’t caused by you, e.g DOA board
- Windows 10 specific issues
-
LattePanda
- Site Admin
- Posts: 2690
- Joined: Wed Jan 20, 2016 9:09 am
Have you tried re-plug the HDMI cable？Or restart the board？ We've been in a similar case once, but it is becasue the problem of compatibility，so it need plug on the board then power the board.
Enjoy Tinkering with LattePanda ! 
-
LattePanda
- Site Admin
- Posts: 2690
- Joined: Wed Jan 20, 2016 9:09 am
It sounds strange, HDMI should be a standard video interface. Try set display setting only on HDMI screen.
Enjoy Tinkering with LattePanda !
-
Holzfaeller
- Posts: 1
- Joined: Sun Nov 01, 2020 7:54 pm
Hello, I also have the problem with the 7.9 inch display, but I use the 4G / 64G. does the LP support the resolution of 400x1280p? The LP runs in combination with the display for about 1 minute, then the image flickers and then it is only blue. I think after that the LP is also in a boot loop, the red LED goes on and off again and again and I can only start it again after I have switched the power off and on again.