Re: Weird characters in virtual terminal consoles from (CTRL-ALT) F2 to F6 and over F7
El 2025-12-17 a las 09:34 +0100, Salvatore Bonaccorso escribió:
> On Wed, Dec 17, 2025 at 08:24:59AM +0100, Gianluca Renzi wrote:
> > Hello list,
> >
> > as stated in this reddit's issue
> > https://www.reddit.com/r/debian/comments/1pnrm5t/comment/nugj9wc/?%24deep_link=true&context=1&correlation_id=2b4b5f38-db9c-5ace-95e8-d47408cf9fae&ref=email_comment_reply&ref_campaign=email_comment_reply&ref_source=email&%243p=e_as&_branch_match_id=1529734982500663144&utm_medium=Email+Amazon+SES&_branch_referrer=H4sIAAAAAAAAA31O2U7DMBD8mvQtCc0BDVKEkFB%2Fw%2FKxSbb40tppygvfzqaFVyRbmp2dmZ0l55he65rAGMyVjLGy6D%2FrNr4VTdfGEYRMB4aBcEYvrVjJjsvuKtr3ojnz27at%2BvXr4Jgg%2FgYUSs%2BAKQc%2BJ4bH6Mn1mVGkoCw4sWFexBUpr5ysg0%2FBQmJwBQ58bCXL%2FTpfhk3v51q%2B2DedAYhib1q0H5lWKJpntme4ZSaO94kIrMwYvEDDZKM61U%2FtqTRq0GUvNZRDDzx2L93TSU%2FDJPcUgonF4CTuhe7VBUG0X4%2Bd0NJFibP%2FV5TCShr%2BJIdv5oAI%2FSwUhS0BjWdkLtx%2BACEnHTd%2FAQAA
> >
> > there is a bug since last kernel update.
> >
> > My virtual consoles from tty2 to tty6 are covered with the copyright symbol.
> > I can still log in to the terminal although everything is illegible. After
> > logging in, I did an ls -a command to my directory. The output is in color.
> > The copyright symbols is obscuring the text. Please have a look at the
> > attachment.
(...)
> > Please let me know how to proceed further.
>
> Ideally you bisect now the changes to identify which commit breaks.
(...)
> In the course of the bisection you might have to uninstall previous
> kernels again to not exhaust the disk space in /boot. Also in the end
> uninstall all self-built kernels again.
Thank you all for confirming the issue and such useful information and
detailed steps for debuging.
I can't help here because the bug is reproducible on my workstation
(main production system) and cannot «play» here as much as I'd wish.
Time permitting on these upcoming holidays, I'll try to install a VM
with Debian 11 and run the bisect from there.
Anyway, I'll be keeping an eye on this thread and see how it evolves.
(it is fine to keep me in CC as I'm not subscribed to this mailing
list).
Just to add more info, the system where I'm facing the issued has a
dedicated Nvidia card (yup, quite old hardware):
sm01@stt008:~$ lspci | grep -i vga
03:00.0 VGA compatible controller: NVIDIA Corporation NV43 [Quadro NVS 440] (rev a2)
04:00.0 VGA compatible controller: NVIDIA Corporation NV43 [Quadro NVS 440] (rev a2)
Cheers,
--
Camaleón
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