Paul Menzel has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/43852 )
Change subject: mb/clevo/kbl-u: Install Intel VGA INT15 handler ......................................................................
Patch Set 1:
The VBIOS Option ROM does not light up the screen, and TianoCore is also not showing anything.
``` PCI: 00:02.0 init FMAP: area COREBOOT found @ 350200 (4914688 bytes) CBFS: Locating 'vbt.bin' CBFS: Found @ offset 705c0 size 4a3 Found a VBT of 6144 bytes after decompression GMA: Found VBT in CBFS GMA: Found valid VBT in CBFS FMAP: area COREBOOT found @ 350200 (4914688 bytes) CBFS: Locating 'pci8086,5916.rom' CBFS: Found @ offset 102e00 size 10000 In CBFS, ROM address for PCI: 00:02.0 = 0xffc53048 Copying VGA ROM Image from 0xffc53048 to 0xc0000, 0x10000 bytes Calling Option ROM... intel_vga_int15_handler: AX=5f34 BX=0190 CX=0002 DX=03da intel_vga_int15_handler: AX=5f51 BX=c000 CX=0000 DX=03da intel_vga_int15_handler: AX=5f40 BX=0000 CX=0004 DX=0008 DISPLAY=0 intel_vga_int15_handler: AX=5f52 BX=400a CX=000f DX=0008 Unknown INT15 function 5f52! int15 call returned error. intel_vga_int15_handler: AX=5f49 BX=19ff CX=0000 DX=1dcc Unknown INT15 function 5f49! int15 call returned error. intel_vga_int15_handler: AX=5f49 BX=0050 CX=0300 DX=0040 Unknown INT15 function 5f49! int15 call returned error. intel_vga_int15_handler: AX=5f14 BX=078f CX=0002 DX=0008 Unknown INT15 function 5f14! int15 call returned error. intel_vga_int15_handler: AX=5f35 BX=c000 CX=0002 DX=03da ... Option ROM returned. VGA Option ROM was run PCI: 00:02.0 init finished in 326 msecs ```