Dear Dexuan,
Am Mittwoch, den 08.08.2018, 00:23 +0000 schrieb Dexuan Cui: > I'm debugging a strange grub2 issue in a Linux Virtual Machine > running on Hyper-V. […] > 4. What's the best way to debug grub_video_set_mode()? > grub_dprintf() can't output anything in this function. Why? Because the display is not working? > Does grub support remote debugging via network? > I know gdb can debug grub in Qemu, but here the issue looks like > Hyper-V specific. If Hyper-V can emulate a serial port, then this should be one way to go. Something like below for `/etc/default/grub`. GRUB_TERMINAL="console serial" GRUB_SERIAL_COMMAND="serial --unit=0 --speed=115200" Thanks, Paul
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