Public bug reported: Hi,
We are experiencing some weird boot issues with Ubuntu 20.04 and Hyper-V 2012r2. In two cases the installation started successfully, as did the VM initial boot and then issues started to arise, where the boot process started to fail. grub start, the menu pop-up and then just after loading kernel and initrd (tried to put some echo(es) in the config the VM somehow reset and the menu pop-up back again. After a few of thoses either the VM shut-down or the boot is successfull, It seems completly random.. Here it is captured on video: https://www.youtube.com/watch?v=5Bk3S-YGDZk If i setup a direct EFI-STUB boot of the kernel+initrd the boot process works every times. I suspected the "save_env/load_env" for a while but a stripped down grub.cfg give the same result.. > insmod gzio > insmod part_gpt > insmod ext2 > set root='hd0,gpt2' > if [ x$feature_platform_search_hint = xy ]; then > search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt2 > --hint-efi=hd0,gpt2 --hint-baremetal=ahci0,gpt2 > 94ebc17e-6aca-4e42-b489-b3eaa8a32d90 > else > search --no-floppy --fs-uuid --set=root 94ebc17e-6aca-4e42-b489-b3eaa8a32d90 > fi > linux /vmlinuz-5.8.0-44-generic root=/dev/mapper/ubuntu--vg-ubuntu--lv ro > nosplash elevator=noop > initrd /initrd.img-5.8.0-44-generic > boot ** Affects: grub2 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1918265 Title: Random boot failure with Ubuntu 20.04 / grub 2.04 and Hyper-V 2012r2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1918265/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
