Continuing the discussion from Add Fedora to Lenovo Yoga C940-14IIL with (Win10) BitLocker enabled:
After learning a lesson, I can boot Fedora-34 in the Lenovo Yoga C940-14IIL .
10th Gen Intel®Core™i7 14” UHD (3840 x 2160) VESA-Certified DisplayHDR™ 400, 500 nits 16GB LPDDR4X 1TB PCIe SSD Intel®UHD 960
I notice that, when the grub2 menu is shown, there is no response.
After observing more closely, I find there is a
_ cursor running from left to right, then from top to bottom. Only when the
_ reached the bottom of the console, the selected entry in the grub2 menu will move (it buffered all the up/down keystrokes and refresh them all).
It takes 5 to 10 s for the
_ to disappear.
How to fix this?