HELP: i915 does not OpenCL(ing) anymore

Hi,

I use Ubuntu 14.04, no X Windows, I have installed the driver as for the installation guide, I have installed the OpenCL sdk as for the installation guide, I have installed the patched kernel 4.4 as for the installation guide, and everything worked a charm when I tested.

After the test of OpenCL, I did not use OpenCL for a while, and after few days, I tried again with several applications, and what I got is just hangs, nothing happens, apart from the cursor blinking. 

I checked if the kernel was still the patched one, and it is, I re-installed the modules, but still the same.

How do I troubleshoot the issue?  Can apt update and upgrade broke the OpenCL system?

I have attached a strace log file

Thanks