Re: boot loader blank screen

From: Mark Millard <marklmi_at_yahoo.com>
Date: Wed, 6 Jan 2021 11:13:41 -0800
On 2021-Jan-6, at 09:51, Cy Schubert <Cy.Schubert at cschubert.com> wrote:

> In message <63A29589-22B5-495B-8E0D-14E13091D939_at_yahoo.com>, Mark Millard 
> write
> s:
>> 
>> 
>> On 2021-Jan-5, at 17:54, David Wolfskill <david at catwhisker.org> wrote:
>> 
>>> On Wed, Jan 06, 2021 at 12:46:08AM +0200, Toomas Soome wrote:
>>>> ... 
>>>>> the 58661b3ba9eb should hopefully fix the loader text mode issue, it woul
>> d be cool if you can verify:)
>>>>> 
>>>>> thanks,
>>>>> toomas
>>>> 
>>>> I think, I got it fixed (at least idwer did confirm for his system, thanks
>> ). If you can test this patch: http://148-52-235-80.sta.estpak.ee/0001-loader
>> -rewrite-font-install.patch <http://148-52-235-80.sta.estpak.ee/0001-loader-r
>> ewrite-font-install.patch> it would be really nice.
>>>> 
>>>> thanks,
>>>> toomas
>>> 
>>> I tested with each of the following "stanzas' in /boot/loader.conf,
>>> using vt (vs. syscons) in each case (though that breaks video reset
>>> on resume after suspend):
>>> 
>>> . . .
>> 
>> I've done no experiments with an explicit vbe_max_resolution
>> setting. My context for hw.vga.textmode="0" shows up as
>> 1920x1200. (I do have the font for this set to 8x16, making
>> for lots of character cells across and down.)
>> 
>> 
>> For the below I do not have hw.vga.textmode="0".
>> 
>>> # hw.vga.textmode="0"
> 
> textmode=1 doesn't work either. Been using it for years and this is the 
> first time it's borked.
> 
>>> # vbe_max_resolution=1280x800
>>> 
>>> (That is, not specifying anything for hw.vga.textmode or
>>> vbe_max_resolution.)
>>> 
>>> This boots OK, but I see no kernel probe messages or single- to
>>> multi-user mode messages.  I can use (e.g.) Ctl+Alt+F2 to switch to
>>> vty1, see a "login: " prompt, and that (also) works.  (This is the
>>> initial symptom I had reported.)
>> 
>> So I tried commenting out hw.vga.textmode="1" and I saw everything
>> I expected in my context. Whiteish on black background (or at least
>> something very dark). I did not take videos to do detailed
>> inspections.
> 
> Didn't work for me. Then again my old eyes didn't detect much difference in 
> contrast.
> 
>> 
>> 
>>> hw.vga.textmode="1"
>>> # vbe_max_resolution=1280x800
>>> 
>>> This works -- boots OK, and I see kernel probe (&c.) messages; this is a
>>> text console (mostly blue text; some white, against a dark background.
>>> It's a medium-light blue, so it's easy enough to read (unlike a navy
>>> blue, for example).
>> 
>> FYI: whiteish on black (or at least something very dark)
>> in my hw.vga.textmode="1" context. I saw everything here
>> as well. I did not take videos to do detailed inspections.
>> 
>> I did not notice any way to tell hw.vga.textmode="1" from
>> having no hw.vga.textmode assignment at all. But, again,
>> I did not set up for an after-the-fact detailed review of
>> what is displayed.
> 
> Everything becomes normal when X starts, except for the three machines 
> downstairs which don't use X.

FYI: My testing did not span using X. I do build lumina, but
basically as part of an environment cross-check on building,
not for use. Still, I could try to start lumina if needed.


===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)
Received on Wed Jan 06 2021 - 18:13:49 UTC

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