Re: Why doesn't the EFI boot loader want to display the graphical orb logo in its boot menu on an Asus Prime 7590-P motherboard?

From: Oleg Lelchuk <oleglelchuk_at_gmail.com>
Date: Mon, 15 May 2023 12:22:12 UTC
Adding screen.font="16×32" to loader.conf fixed that tiny issue mentioned
in the previous email message... I find it a bit surprising that I only had
to make one tiny change to the source code of stand to make the graphical
logo appear, to start playing with the EFI resolution, and etc.

On Sun, May 14, 2023, 8:58 AM Oleg Lelchuk <oleglelchuk@gmail.com> wrote:

> Okay, so I edited /usr/src/stand/efi/loader/main.c , and I replaced ConOut
> with ConIn in this line: rv = efi_global_getenv("ConIn", buf, &sz); . Now I
> am able to see the beautiful graphical logo in the efi boot menu! But why
> are the boot menu and the logo shown in the top left corner of my computer
> screen? My monitor is 1080p and the setting efi_max_resolution=1080p in
> loader.conf only affects what happens after the kernel starts booting up,
> but it doesn't affect what happens before it: the boot menu and the logo
> remain in the top left corner of the screen. Why is this the case? You can
> see the photo in the provided attachment... And thank you, guys, for your
> work!
>
> On Sat, May 13, 2023 at 9:35 AM Warner Losh <imp@bsdimp.com> wrote:
>
>>
>>
>> On Sat, May 13, 2023, 6:26 AM Oleg Lelchuk <oleglelchuk@gmail.com> wrote:
>>
>>> I've been reading the documentation for loader.efi and it says this: "If
>>> there is no ConOut variable, both serial and video are attempted.
>>>      loader.efi uses the "efi" console for the video (which may or may
>>> not
>>>      work) and "comconsole" for the serial on COM1 at the default baud
>>> rate.
>>>      The kernel will use a dual console, with the video console primary
>>> if a
>>>      UEFI graphics device is detected, or the serial console as primary
>>> if
>>>      not."
>>> I find this language confusing because I don't know what is meant by "a
>>> UEFI graphics device". In my situation, is my Intel Integrated Graphics
>>> card an UEFI graphics device? Does it mean that once i915kms is loaded, I
>>> no longer deal with UEFI graphics? I think lots of people whose native
>>> language is English will find the documentation describing loader.efi
>>> confusing. The documentation page also mentions this: "BUGS
>>>      Systems that do not have a ConOut variable set are not conformant
>>> with
>>>      the standard, and likely have unexpected results." But I think you
>>> guys already implied that the UEFI specification doesn't mandate having
>>> such a variable.
>>>
>>
>> That's unclear. The standard refers to it many times. Earlier versions
>> especially. It doesn't say it's optional, unlike some other variables. Yet
>> later versions don't say it's mandatory.  I've yet to own or use a system
>> without it... such systems exist but they are quite new...
>>
>> Warner
>>
>> On Fri, May 12, 2023 at 7:55 PM Oleg Lelchuk <oleglelchuk@gmail.com>
>>> wrote:
>>>
>>>> I got it. Thanks.
>>>>
>>>> On Fri, May 12, 2023 at 7:45 PM Ed Maste <emaste@freebsd.org> wrote:
>>>>
>>>>> On Fri, 12 May 2023 at 09:26, Oleg Lelchuk <oleglelchuk@gmail.com>
>>>>> wrote:
>>>>> >
>>>>> > I don't want to go through the hassle of filling a bug with my
>>>>> vendor. I will just wait for you, guys, to update the stand implementation.
>>>>> Thank you for explaining to me what causes this issue.
>>>>>
>>>>> This issue is tracked in PR 265980 if you want to follow it.
>>>>> https://bugs.freebsd.org/265980
>>>>>
>>>>