[coreboot] [skylake] Can not turn monitor on
nico.h at gmx.de
Sat Oct 6 11:50:58 CEST 2018
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 . 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:
If you try that and it fails, please also enable
and send us a coreboot log.
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