I have just corebooted T440p. Then I noticed some graphic display problems...
Firstly I "Use libgfxinit" with "Legacy VGA text mode", insert a usb disk with archlinux's latest install image iso. I can see a text mode of archlinux's start screen. https://imgur.com/0QqQgJn But when I hit enter, it shows some log till "Triggering uevents" and then there is no display... https://imgur.com/CHI9jeE Then I tried "Use libgfxinit" with "Linear "high-resolution" framebuffer". I can see the graphic mode of archlinux's start screen, but again after I hit enter and see some logs, there is no display... Also, the display is not ideal, just at the top left corner not full screen. https://imgur.com/dvYLERu Also, under this setting, the nvramcui's display becomes bad. https://imgur.com/7YG0kOX Next I included pci8086,0416.rom vbios and tried "Run VGA Option ROMs" with "Legacy VGA text mode". This time, I can't see the archlinux start screen as shown above, there is no display at the beginning. But I can hit the enter blindly. Then after a while I can see archlinux is booting and the first line I can see is "Probing EDD (edd=off to disable)...ok" the archlinux starts ok. Lastly I also tried "Run VGA Option ROMs" with "Set framebuffer graphics resolution" with the default "framebuffer graphics resolution (1024x768 16.8M-color (8:8:8))" (although my T440p's resolution is 1920x1080). Also the Framebuffer mode is changed to "VESA framebuffer". I still can't see archlinux's start screen... How to make everything work like the vendor BIOS? i.e., I can see both the archlinux's start screen and it's booting. How to fix the nvramcui under "high-resolution" framebuffer"? Also, as for now it appears seabios can't boot UEFI media. Tianocore by default can't boot Linux/Windows installed by legacy method (installed when using seabios). my goal is to add UEFI support through tianocore as seabios payload (or through tianocore's CSM compatibility support module? ). So that it can boot both UEFI installed Windows or legacy installed Windows like the vendor bios can do. How to achieve this?
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