Hi Zheng, On 10/6/18 4:58 AM, Zheng Bao wrote: > Sorry for being unclear.
no worries, it seems I wasn't very attentive anyway. I just implied you have an integrated (laptop) panel; maybe because you have a mobile processor or maybe because the 1440x900 resolution is common for lap- tops. Anyway, now that you mentioned VGA... May I assume that you don't have an integrated panel and just want an external VGA monitor to work? > By BIOS stage, I mean I need to see the text "Press ESC for boot menu." > on screen. It also means it needs to boot DOS with display on. > But I can not. I have to wait for the linux to boot. Only Linux > (driver?) can turn the display on. I tried with both vbt from github and The VBT is a configuration file for the VBIOS/GOP and graphics drivers. It has to be adapted for each board, so the one from github would only work by low chance. > extracted from original AMI BIOS. How did you extract it? using uefitool on a BIOS image? or from RAM when the original BIOS booted? > My board uses IT6515FN to transfer the display to VGA. This sounds like something libgfxinit could support. I would just try it. You'd have to enable support for your board like this [1]. Your `Port_List` should be `(DP1, DP2, DP3, Internal)`. `Internal` means the eDP here. If you know exactly to which physical port this IT6515FN is connected, you can also specify only that port. Then, in your .config you should have: CONFIG_MAINBOARD_USE_LIBGFXINIT=y CONFIG_VGA_TEXT_FRAMEBUFFER=y If you try that and it fails, please also enable CONFIG_DEBUG_ADA_CODE=y and send us a coreboot log. Nico [1] https://review.coreboot.org/28620 -- coreboot mailing list: coreboot@coreboot.org https://mail.coreboot.org/mailman/listinfo/coreboot
