ok guys... good news.
after spending weeks searching the web, i discover the problem is quite strange, but easy to fix.
looks like new kernel changed a bit the way the call acpi(or apic i always forget it). Any way, most of the asus mother board, now hang because of a bios bug that has been fixed by asus it sealf. A bios upgraded is needed to fix this issue.
in particular my mother board:
asus M2N-MX SE PLUS needs bios >= 0503 (latest is 06something)
i think that should be write into RELEASE NOTES.
looks also that disable acpi on boot should be a workaround but i never tought to use it since i never needed it.
ok guys... good news.
after spending weeks searching the web, i discover the problem is quite strange, but easy to fix.
looks like new kernel changed a bit the way the call acpi(or apic i always forget it). Any way, most of the asus mother board, now hang because of a bios bug that has been fixed by asus it sealf. A bios upgraded is needed to fix this issue.
in particular my mother board:
asus M2N-MX SE PLUS needs bios >= 0503 (latest is 06something)
i think that should be write into RELEASE NOTES.
looks also that disable acpi on boot should be a workaround but i never tought to use it since i never needed it.