OK, it seems problem is somehow related with... driver white list? Driver detection?
I've found pipelight configs in /usr/share/pipelight/configs, and unhashing line
overwriteArg = enableGPUAcceleration=false
or line
overwriteArg = enableGPUAcceleration=true
does the job - firefox and thunderbird works in both cases on Intel GPU.
OK, it seems problem is somehow related with... driver white list? Driver detection?
I've found pipelight configs in /usr/share/ pipelight/ configs, and unhashing line ration= false ration= true
overwriteArg = enableGPUAccele
or line
overwriteArg = enableGPUAccele
does the job - firefox and thunderbird works in both cases on Intel GPU.