12-13-2019, 03:56 AM
Audio should be working buy the DAC is muted by default. You can use alsamixer -D hw:0 to unmute the Left and Right Headphone Mixer DACs. This is what the comments about "priming the ALSA state" are about... if the installer did that then the DACs would be unmuted by default.
The boot time is a more complex issue. AFAIK the slow boot time occurs because u-boot hands some of the cores to Linux when they are running at a very low clock speed. This makes all the kernel operations until the cpufreq driver comes up perform very badly (much of the time you spend waiting with a black screen is simply a decompression algorithm that would normally take less than 2 seconds). I've not looked any further than this just yet... although I did wonder if the best fix might end up in u-boot rather than the kernel anyway.
The boot time is a more complex issue. AFAIK the slow boot time occurs because u-boot hands some of the cores to Linux when they are running at a very low clock speed. This makes all the kernel operations until the cpufreq driver comes up perform very badly (much of the time you spend waiting with a black screen is simply a decompression algorithm that would normally take less than 2 seconds). I've not looked any further than this just yet... although I did wonder if the best fix might end up in u-boot rather than the kernel anyway.