GPU i.MX8MM Etnaviv Bus Error with 4GB DDR
When using the GPU with boards that have 4GB of RAM, it can happen that the following errors are logged and the system won't work anymore:
[ 27.464790] etnaviv-gpu 38000000.gpu: AXI bus error
[ 27.469745] etnaviv-gpu 38000000.gpu: MMU fault status 0x00000000
[ 27.970450] etnaviv-gpu 38000000.gpu: recover hung GPU!
This is probably due to some bug with memory allocation and addressing. A possible workaround until this is fixed is to limit the amount of available RAM to 3 GB by using the kernel parameter mem=3G
.