let me first thank you really a lot for all the useful material on your eewiki!
I have successfully compiled and run Debian with Kernel 4.9.x on my Udoo quad following your instructions; I obtained a very clean and minimal installation that works like a charm.
Last Monday I wanted to try latest Kernel version so I started the process from scratch with Kernel 4.16.x first and 4.17.x next. Compiling and SD preparation worked fine in both cases, but when I boot my Udoo I get the following error in console:
1.987906] coda 2040000.vpu: Direct firmware load for vpu_fw_imx6q.bin failed with error -2
[ 1.997708] snvs_rtc 20cc000.snvs:snvs-rtc-lp: setting system clock to 1970-01-01 00:00:00 UTC (0)
[ 2.006759] coda 2040000.vpu: Direct firmware load for vpu/vpu_fw_imx6q.bin failed with error -2
[ 2.008657] sr_init: No PMIC hook to init smartreflex
[ 2.015654] coda 2040000.vpu: Direct firmware load for v4l-coda960-imx6q.bin failed with error -2
[ 2.021480] lcd_panel: disabling
[ 2.029554] coda 2040000.vpu: firmware request failed
and then it hangs there…
Any idea what’s wrong here?