![]() You are receiving this because you modified the open/close state. In the end, it is very inconsistent and I can't figure out anyĬombination of settings that will allow me to display more than 2 streams You have to update the drivers for fixing this problem. Sometimes flickering occurs for not having an updated drive. The Refresh rate of the screen is a very important cause behind flickering. Streams where when I set it to 512 it would flash back and forth between First, you have to check the screen if it is damaged or not. Something did change when I set it to 1024, in that it would allow 2 1080p Performance improvements, and are untested.* *Values of gpu_mem over 512 are not recommended, will provide no Poor support for 4k displays in the RPi4, an issue with my 4K TV, or what. twofing -debug You can exit the program with CTRL + C. rm /twofing-0.1.2 Start Twofing in debug mode and test with two fingers if the right-click works on the Touchscreen. Only get 7 or 9 to display when trying a 3x3. sudo reboot Delete the obsolete folder of Twofing in the home folder. I then tried a lower res substream of 704x480. I had been running on a flickering screen for 7 months how could I not have thought of that Mine was about a year old when a band on the left of the screen started to flicker and go strange. Note that this requires administrative rights. Open this with a text editor such as vi, nano, or leafpad. You can disable KBDs screen blanking via its configuration file, /etc/kbd/config. DONATE Hello, 1) Try updating the 'Display drivers'. KBD is what seems to causes the screen-blanking. However an attempt to display 4 of them would only display the original 2. Zoom causing screen to flicker Zoom causing screen to flicker. Setting gpu_mem=1024 and I was able to get 2 1080p feeds to display, It would switch back and forth (like a flicker, but only displaying oneįeed at a time) between both feeds until ultimately one would go blank and Just trying to use 2 1920x1080Ĭamera feeds I could only get one to display when I had gpu_mem set to 512. I am trying to configure a RPi4 with 4GB and a 4K TV that I recently In the end, it is very inconsistent and I can't figure out any combination of settings that will allow me to display more than 2 streams at 1080p or more than 7 at D1 (704x480). Something did change when I set it to 1024, in that it would allow 2 1080p streams where when I set it to 512 it would flash back and forth between the 2. Values of gpu_mem over 512 are not recommended, will provide no performance improvements, and are untested. I'm not sure if this is just poor support for 4k displays in the RPi4, an issue with my 4K TV, or what. With this resolution I can only get 7 of 9 to display when trying a 3x3 layout. ![]() As ahjcheng mentioned above I then tried setting gpu_mem=1024 and I was able to get 2 1080p feeds to display, however an attempt to display 4 of them would only display the original 2. It would switch back and forth (like a flicker, but only displaying one feed at a time) between both feeds until ultimately one would go blank and then the 2nd would display fine. Just trying to use 2 1920x1080 camera feeds I could only get one to display when I had gpu_mem set to 512. I am trying to configure a RPi4 with 4GB and a 4K TV that I recently purchased.
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