[coreboot] Intel G41 - Asrock G41M-GS: no coreboot screen output from Intel GPU on VGA

Wed Aug 15 11:38:03 CEST 2018

Its not a slow reacting monitor. I already pressed it blind before 
reporting the issue here without any success. Its a modern, fast 
reacting LED monitor (ccfl takes longer to turn on). I get immediately  
after powering on a coreboot screen on the monitor when i insert a PCIe 
graphics card into the PCIe slot but i need the working internal Intel 
GPU.

On 2018-08-14 15:30, Jose Trujillo via coreboot wrote:
> Just press ESC key during booting for Seabios and if everything in the
> video interface is properly configured by default you should see the
> boot menu.
> 
> 
> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> On August 14, 2018 4:35 PM, <h42 at memeware.net> wrote:
> 
>> I wrote the way i had build coreboot. Tianocore is not the default
>> payload. The default payload recently is (i checked now) SeaBIOS 
>> 1.11.2
>> .
>> I have not touched anything at the payload. I just leave everything
>> default and would like to be able to see the output of coreboot so 
>> that
>> i can choose for example to boot from a usb-pendrive.
>> 
>> What should i do now to get the <everything at default coreboot> to 
>> show
>> output on the screen?
>> 
>> On 2018-08-14 11:53, Jose Trujillo via coreboot wrote:
>> 
>> > Hello h42
>> > If you are using Tianocore you must use VESA framebuffer
>> > If Seabios use text mode
>> > Jose
>> > ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
>> > On August 14, 2018 2:41 PM, h42 at memeware.net wrote:
>> >
>> > > I dont get anything on the screen from coreboot. The later os is
>> > > displaying fine.
>> > > How i build the image: ran on a fresh git cloned (from today) 'make
>> > > menuconfig', chose just the mainboard manufacturer and the model,
>> > > press
>> > > esc, confirmed saving, ran 'make'. I installed this image and dont get
>> > > any coreboot output on the screen. When i wait long enough, i get the
>> > > output from the Linux OS on the screen.
>> > > From the coreboot logfile:
>> > > coreboot-4.8-1195-gb75a08b199
>> > > [...]
>> > > FMAP: Found "FLASH" version 1.1 at 0.
>> > > FMAP: base = fff00000 size = 100000 #areas = 4
>> > > FMAP: area RW_MRC_CACHE found @ 10000 (65536 bytes)
>> > > MRC: No data in cbmem for 'RW_MRC_CACHE'.
>> > > BS: BS_DEV_ENUMERATE times (us): entry 0 run 150329 exit 16016
>> > > found VGA at PCI: 00:02.0
>> > > Setting up VGA for PCI: 00:02.0
>> > > Setting PCI_BRIDGE_CTL_VGA for bridge DOMAIN: 0000
>> > > Setting PCI_BRIDGE_CTL_VGA for bridge Root Device
>> > > Allocating resources...
>> > > Reading resources...
>> > > TOUUD 0x80000000 TOLUD 0x80000000 TOM 0x80000000
>> > > IGD decoded, subtracting 64M UMA and 4M GTT
>> > > TSEG decoded, subtracting 8M
>> > > Available memory below 4GB: 1972M
>> > > Adding UMA memory area base=0x7b400000 size=0x04c00000
>> > > Adding PCIe config bar base=0xe0000000 size=0x10000000
>> > > Done reading resources.
>> > > [...]
>> > > [21.707417] CONFIG =>
>> > > [21.709411] (Primary =>
>> > > [21.711924] (Port => Analog ,
>> > > [21.715130] Framebuffer =>
>> > > [21.718076] (Width => 640,
>> > > [21.721542] Height => 400,
>> > > [21.725008] Start_X => 0,
>> > > [21.728301] Start_Y => 0,
>> > > [21.731594] Stride => 1,
>> > > [21.734886] V_Stride => 1,
>> > > [21.738179] Tiling => Linear ,
>> > > [21.741993] Rotation => No_Rotation,
>> > > [21.746153] Offset => 0xffffffff,
>> > > [21.749966] BPC => 8),
>> > > [21.753085] Mode =>
>> > > [21.755424] (Dotclock => 148500000,
>> > > [21.760192] H_Visible => 1920,
>> > > [21.764524] H_Sync_Begin => 2008,
>> > > [21.768857] H_Sync_End => 2052,
>> > > [21.773190] H_Total => 2200,
>> > > [21.777523] V_Visible => 1080,
>> > > [21.781857] V_Sync_Begin => 1084,
>> > > [21.786189] V_Sync_End => 1089,
>> > > [21.790522] V_Total => 1125,
>> > > [21.794855] H_Sync_Active_High => True,
>> > > [21.799189] V_Sync_Active_High => True,
>> > > [21.803521] BPC => 5)),
>> > > [21.807767] Secondary =>
>> > > [21.810281] (Port => Disabled,
>> > > [21.813487] Framebuffer =>
>> > > [21.816433] (Width => 1,
>> > > [21.819727] Height => 1,
>> > > [21.823020] Start_X => 0,
>> > > [21.826313] Start_Y => 0,
>> > > [21.829605] Stride => 1,
>> > > [21.832899] V_Stride => 1,
>> > > [21.836193] Tiling => Linear ,
>> > > [21.840006] Rotation => No_Rotation,
>> > > [21.844166] Offset => 0x00000000,
>> > > [21.847979] BPC => 8),
>> > > [21.851098] Mode =>
>> > > [21.853438] (Dotclock => 24000000,
>> > > [21.858118] H_Visible => 1,
>> > > [21.862191] H_Sync_Begin => 1,
>> > > [21.866263] H_Sync_End => 1,
>> > > [21.870336] H_Total => 1,
>> > > [21.874409] V_Visible => 1,
>> > > [21.878482] V_Sync_Begin => 1,
>> > > [21.882555] V_Sync_End => 1,
>> > > [21.886629] V_Total => 1,
>> > > [21.890702] H_Sync_Active_High => False,
>> > > [21.895121] V_Sync_Active_High => False,
>> > > [21.899541] BPC => 5)),
>> > > [21.903787] Tertiary =>
>> > > [21.906300] (Port => Disabled,
>> > > [21.909507] Framebuffer =>
>> > > [21.912453] (Width => 1,
>> > > [21.915746] Height => 1,
>> > > [21.919039] Start_X => 0,
>> > > [21.922331] Start_Y => 0,
>> > > [21.925624] Stride => 1,
>> > > [21.928918] V_Stride => 1,
>> > > [21.932211] Tiling => Linear ,
>> > > [21.936023] Rotation => No_Rotation,
>> > > [21.940183] Offset => 0x00000000,
>> > > [21.943996] BPC => 8),
>> > > [21.947116] Mode =>
>> > > [21.949455] (Dotclock => 24000000,
>> > > [21.954135] H_Visible => 1,
>> > > [21.958207] H_Sync_Begin => 1,
>> > > [21.962280] H_Sync_End => 1,
>> > > [21.966353] H_Total => 1,
>> > > [21.970427] V_Visible => 1,
>> > > [21.974499] V_Sync_Begin => 1,
>> > > [21.978572] V_Sync_End => 1,
>> > > [21.982646] V_Total => 1,
>> > > [21.986719] H_Sync_Active_High => False,
>> > > [21.991138] V_Sync_Active_High => False,
>> > > [21.995557] BPC => 5)));
>> > > PCI: 00:02.0 init finished in 307222 usecs
>> > > PCI: 00:02.1 init ...
>> > > PCI: 00:02.1 init finished in 2009 usecs
>> > > PCI: 00:1b.0 init ...
>> > > [...]
>> > > So it seems to have detected that my screen is 1920*1080. GPU + screen
>> > > detection seems to be working. But i dont get any coreboot output on
>> > > the
>> > > screen.
>> > > The output had worked fine on this screen with the OEM BIOS.
>> > >
>> > > coreboot mailing list: coreboot at coreboot.org
>> > > https://mail.coreboot.org/mailman/listinfo/coreboot
>> 
>> --
>> 
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