Comment 18 for bug 1742323

This seems to affect many users : https://ubuntuforums.org/showthread.php?t=2382157

I have a Intel(R) Core(TM) i5-3450S CPU and kernel 4.4.0-108 doesn't boot
Booting with 4.4.0-104 works

flags of my CPU : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm epb tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms xsaveopt dtherm ida arat pln pts

I have no video display when it crashes. If I boot in recovery mode, it only displays (translated in English) :
Loading Linux 4.4.0-108-generic...
Loading initial ramdisk...

And nothing else happens.

NB : my root partition is encrypted with LUKS