Re: [Xen-users] EFI boot unsuccessful with Ubuntu 18.04 dom0

[PGNet Dev <pgnet.dev@xxxxxxxxx>]

On 2/27/19 3:50 AM, Enrique Sainz Baixauli wrote:
> Thanks PGNet Dev and Mr. Poole for your answers.

Just to be clear, with 'my config', and in particular the use of the patched 
efi package, my system boots once again without error.

I _do_ get output on console -- to login prompt -- with video configured & 
verbosity defined by logging flags, in my /etc/default/grub.

E.g., currently, my last grub config used for detailed boot debugging/logging 
included:


        GRUB_CMDLINE_LINUX="
         ...
         rd.shell rd.debug=1 rd.udev.log_priority=debug rd.auto=1 \
         ...
         video=vesa:off video=efifb:1024x768 video=HDMI-A-1:1920x1080@60 \
         console=tty0 console=ttyS0,115200n81 \
         showopts noquiet log_buf_len=10M print_fatal_signals=1 \
         systemd.log_level=debug systemd.log_target=kmsg \
         earlyprintk=vga,keep debug loglevel=8" \
         ...
        "

        GRUB_CMDLINE_LINUX_XEN_REPLACE="softlevel=xen
         ...
         rd.shell rd.debug=1 rd.udev.log_priority=debug rd.auto=1 \
         ...
         video=vesa:off video=efifb:1024x768 \
         xencons=xvc console=tty0 console=hvc0 \
         showopts noquiet log_buf_len=10M print_fatal_signals=1 \
         systemd.log_level=debug systemd.log_target=kmsg \
         earlyprintk=xen,keep debug loglevel=8" \
        "

        GRUB_CMDLINE_XEN="
         ...
         vga=gfx-1920x1080x16 \
         com1=115200,8n1,pci console=com1,vga console_timestamps 
console_to_ring conring_size=64 \
         log_buf_len=16M  \
         loglvl=all guest_loglvl=all sync_console=true sched_debug 
iommu=verbose apic_verbosity=verbose \
         ...
        "

        GRUB_SERIAL_COMMAND="serial --unit=0 --speed=115200 --word=8 
--parity=no --stop=1"
        GRUB_GFXMODE=2560x1440,1600x1200,1280x1024,1024x768,auto
        GRUB_GFXPAYLOAD_LINUX="keep"
        GRUB_TERMINAL_INPUT="console serial"
        GRUB_TERMINAL_OUTPUT="gfxterm serial"

You can tweak logging flags to your heart's content, but to get 'complete', 
early logging as well, serial port is required -- and works nicely with the 
config above.

I'm able to login successfully to the booted machine at serial console, video 
console -- or SSH login.

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-users