Package: grub-xen-host Version: 2.04-20 I'm unsure which versions from stable were tried, but at a minimum 2.02+dfsg1-20+deb10u4 was and also had this issue. I'm also unsure whether this is actually a GRUB bug versus a Linux kernel bug.
When booting in x86 PVH mode the Linux kernel fails to load the Xen virtual console as console. As a result the kernel's dmesg is unavailable for debugging during boot. When using grub-x86_64-xen.bin (x86 PV mode) as Xen kernel: $ cat /proc/consoles tty0 -WU (EC p ) 4:1 hvc0 -W- (E p ) 229:0 $ When using grub-i386-xen_pvh.bin (x86 PVH mode) as Xen kernel: $ cat /proc/consoles tty0 -WU (EC p ) 4:1 $ When using Tianocore's XEN_EFI.fd (arm64 PVH mode) as Xen kernel: $ cat /proc/consoles hvc0 -W- (EC p ) 229:0 $ Presently I think GRUB is more likely the culprit, but this is far from certain. Notably there are a few messages from the ACPI code, so I'm wondering if GRUB sets up an ACPI table which isn't quite right. I'm surprised at "tty0" being listed given the complete lack of any sort of potential console device. Yet this is x86, so I can understand. -- (\___(\___(\______ --=> 8-) EHM <=-- ______/)___/)___/) \BS ( | ehem+sig...@m5p.com PGP 87145445 | ) / \_CS\ | _____ -O #include <stddisclaimer.h> O- _____ | / _/ 8A19\___\_|_/58D2 7E3D DDF4 7BA6 <-PGP-> 41D1 B375 37D0 8714\_|_/___/5445
