Ok, so nothing yet on the screen seems to suggest either a graphics-related issue or a different, early problem.
The successful test to boot into recovery mode provides a very good lead; thanks for coming up with that. These are the 3 kernel options added by the recovery mode, per the kern.log file you attached: 'recovery nomodeset dis_ucode_ldr' - nomodeset is graphics related, and - dis_ucode_ldr is processor microcode related, which runs very early. which supports that theory. So please try booting with either one of them, (please remove quiet and splash, no more earlyprintk nor ignore_loglevel.) I imagine that nomodeset is more likely to do the trick. If dis_ucode_ldr does it, there's something worse in it. If you need _both_, I'd be surprised, as they're not related. Thanks! Mauricio -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1895458 Title: Computer freezes on kernel 5, works on kernel 4 Status in linux package in Ubuntu: Confirmed Bug description: The computer works with kernel Ubuntu 4.15.0-112.113-generic 4.15.18. If I update to linux-image-5.4.0-47-generic 5.4.0-47.51 - it freezes. I tried the procedure "https://wiki.ubuntu.com/DebuggingKernelBoot"; it freezes after Ctrl+x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1895458/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
