Thanks for the help,
I have checked the timestamps into the 3 logs : It always corresponds to the successful boot. "journalctl -b" gives text I can't interpret, anyway it always corresponds to the last boot (successful). The Bios version is the most up to date one : v301 (13 oct 2016) The "quiet splash" option doesn't give any output to the screen when removed. I already checked that in the past and I re-tested today. I forgot to mention that the freeze occurs just after the Grub automatic selection. I guess the crash occurs in between Grub and kernel init. The bios UI is really limited, and I don't remember going there since a long time (except for boot priority). Moreover that bug doesn't occur when the package "intel-microcode" is removed. Additional hints : - There is a big chance that I installed Xubuntu from a USB key created with UnetBootin (I saw it gives problem with Debian) - I am using the rEFInd Boot Manager on top of Grub -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1746200 Title: Regression in 2017-07-07 updates To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/intel-microcode/+bug/1746200/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
