On 29.12.19 10:32, Rafael Send wrote:
- I'm running linear frame buffer, but not at native resolution. If I do,
the boot menu text gets too small since this is a 13" 2k screen.
- Payload is Tianocore
- Windows is installed in UEFI (these last two have been the same
configuration as always)
hmmm, three thoughts:
o have you re-tested your old builds to rule out changes in Windows?
o did you change the framebuffer resolution? IIRC, Windows is picky
about the width of the framebuffer (try a multiple of 16).
o if neither the Windows installation nor the resolution are to
blame, I'd check for changes in Tianocore.
I didn't know the commit hash was embedded in the binary, I'll take a look
and see if I can reproduce a working build.
I do know that my display needed a patch to work correctly before this
update <https://review.coreboot.org/c/coreboot/+/35898>, but I'm unclear if
THAT's what caused Windows to not work correctly (i.e whether the patch
worked better or not). I guess if I start with the commit I originally used
I can play around with cherry-picking that commit vs the previous patch).
That's unlikely to be related. The only thing Windows gets in touch with
is the framebuffer configuration, which is merely the resolution, stride
and a pointer into gfx memory. It doesn't care how the hardware was set
up to get there.
Nico
R
On Sat, Dec 28, 2019 at 5:00 AM Nico Huber <nic...@gmx.de> wrote:
Hi Rafael,
On 26.12.19 21:43, Rafael Send wrote:
For the past month or two (I'm not actually sure WHEN it stopped
working) I
haven't been able to successfully boot (any) Windows installations using
libgfxinit.
libgfxinit just sets up a framebuffer, all the software compatibility
depends on how the framebuffer info is communicated (coreboot payload
mostly). Please tell us
o do you run a textmode or linear (native resolution) framebuffer?
o is your Windows in BIOS or EFI mode? (these are completely different
cases wrt. the framebuffer)
o if you use SeaBIOS, please also attach your .config and the output
of `build/cbfstool build/coreboot.rom print`. There are many, many
variables with SeaBIOS with too many possible combinations.
Mid-October I had created some builds that worked, but I'm not sure they
were using master or something else at that point (only kept the binaries
unfortunately).
coreboot binaries contain the commit hash and a defconfig they were
built with. You can compare that to your current built.
Nico
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