grub4efi: clear is not good working after switching to graphicsmode 3
deomsh opened this issue · 3 comments
Command 'clear' is not always working after switching to graphicsmode 3. No problems in graphicsmode -1 640 (or 800 or 1024)
Also return value of call Fn.4 seems to be 'wrong', even without switching graphicsmode:
BTW bootx64.efi version 20221128, tested in Virtual Box Version 6.1.38 r153438 (Qt5.6.2)
It is not easy to solve.
Which of the following methods is better?
- Keep unchanged.
- Direct conversion to 640 * 480 mode.
- Empty operation. Do nothing.
Please say why you want to switch to text mode?
The standard text mode is 80 * 25. Your text mode is not standard. Qemu is the best, VMware Workstation Pro is the second, and Oracle VM VirtualBox is the worst.
The real machine UEFI starts without using the graphic mode. It is the standard text mode provided by the computer firmware, which must be 80 * 25.
However, different virtual machines simulate different firmware.
The problem now is that once the graphics mode is set, it is difficult to return to the text mode provided by the firmware. At least I haven't found a good way.
Another problem is the font. The font in graphic mode is not beautiful.