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Re: 11: no text on tty[2-6] (solved by newer kernels than 5.10.0-37)

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David Wright composed on 2026-05-11 10:37 (UTC-0500):

> On Mon 11 May 2026 at 10:58:03 (-0400), Felix Miata wrote:

>> Felix Miata composed on 2026-05-11 10:49 (UTC-0400):

>>> This probably dates back more or less to November, with kernel 5.10.0-37, and
>>> applies whether AMD, Intel or NVidia graphics, on all 20+ Bullseyes I still have.
>>> tty1 behaves normally, but 2-6 only has a blinking underscore on row 3 at its
>>> expected position following an invisible shell prompt.

>>> Is this happening to everyone using old-old?-- 

>   https://lists.debian.org/debian-user/2025/12/msg00188.html

I don't remember seeing that happen, or that post.

> My experience with -37 was not of /no/ text, but of a "random"
> character all over the screen. As I described, the VCs could
> be used even though you couldn't read the output from commands.
> (Changing font size would change the character.) 
That's how 37 is working now, but it turns out I got antsy and wrote about this
before booting 42 a second time on anything. With 42 at least, normalcy on 2-6 is
back, at least on the currently booted Intel Haswell GPU host ab85m.

> But when I upgraded to -38 on 2026-02-12, normality was restored.
> On my systems, -37 is long gone (2026-03-13), and all versions
> before and since -37 have worked normally.

>> Actually, tty1 only behaves normally to a point. No shell prompt appears, after
>> last boot message, and there's no response to keyboard. Also, same behavior
>> whether target is graphical or multi-user.

This is still the case. tty1 is useless except to read the last displayed boot
messages.

> That's never been my experience, and you make it sound as if
> the system is unusable. Is that the case? My keyboard was never
> affected. I'm writing this on a bullseye, old-old system,
> up to date with -42.

It was and is fine booted to GUI, so I suppose all my others will turn out to be
the same with post-37 kernels.

> The one oddity that I do see, and this is older than bullseye
> and still occurs on bookworm/trixie, is something that I think
> I reported many years ago but haven't been worried about. It
> happens on different computers too.

> While not logged in (ie on the initial getty), the login:
> prompt may be erased by what appears to be a self generated
> Home ClearLine sequence. This can also happen at the
> Passphrase: prompt when I unlock /home (logged in as the
> dedicated "unlock" user, who immediately gets logged out
> by its ~/.profile script). As I then login as me, and
> startx, I don't have the opportunity to see whether tty1
> would keep behaving like this if I kept logging out/in.
> Nor have I ever seen this behaviour on the other ttys,
> but that could be because the number of opportunities is
> just too low (very occasional usage).

> Cheers,
> David.
Thanks!
-- 
Evolution as taught in public schools is, like religion,
	based on faith, not based on science.

 Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata

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Re: 11: no text on tty[2-6] Felix Miata <mrmazda@earthlink.net> - 2026-05-11 17:00 +0200
  Re: 11: no text on tty[2-6] David Wright <deblis@lionunicorn.co.uk> - 2026-05-11 17:40 +0200
    Re: 11: no text on tty[2-6] (solved by newer kernels than 5.10.0-37) Felix Miata <mrmazda@earthlink.net> - 2026-05-12 01:30 +0200

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