Thanks
Dave

On Sat, Dec 31, 2022, 11:13 AM Alan Mackenzie <acm@muc.de> wrote:

> Hello again, Peter.
>
> On Sat, Dec 31, 2022 at 15:47:01 +0000, Peter Humphrey wrote:
> > Hello Alan,
> > On Saturday, 31 December 2022 14:08:43 GMT you wrote:
>
> > > What I'm thinking here is that you might be installing a font which is
> > > bigger than the 8x16 standard that you appear to be booting with.  To
> > > check this, would you please do:
>
> > >     # file /lib/rc/console/font
>
> > > , which should return a message like:
>
> > >     /lib/rc/console/font: Linux/i386 PC Screen Font v1 data, 256
> characters,
> > > Unicode directory, 8x16
>
> > > What is the size of this font, here (where it says 8x16 for my font)?
> > > The reason I ask is, I've got a horrible suspicion that one of the C
> > > functions which copies screen data when the screen size is changed can
> > > only copy to a same sized or (possibly) _bigger_ screen (i.e. with a
> > > smaller font).  If this is indeed the case, it might explain why you're
> > > seeing a hang, here.
>
> > I think you've put your finger on it:
>
> > $ file /lib/rc/console/font
> > /lib/rc/console/font: Linux/i386 PC Screen Font v2 data, 256 characters,
> > Unicode directory, 22x11
>
> > I use consolefont="ter-122n" from the terminus-font package. It's a long
> time
> > since I was able to read a high-resolution screen in its native
> resolution.
>
> > Is there some way I can get the UEFI BIOS to boot with that font, or a
> larger
> > one? Or perhaps let the system boot without setting a font and then
> changing
> > it later?
>
> Probably, but it would be better if I just fixed the bug(s) in my changes
> to
> the kernel.  Changing font size is something one should be able to do.
>
> > Neither of those looks easy to do. I'd better have a good root through
> the
> > BIOS options to start with.
>
> A happy new year to you (and everybody else here), and give me somewhere
> between a few hours and a few days, and this bug should get fixed.
>
> Again, thanks for such effective testing!
>
> > --
> > Regards,
> > Peter.
>
> --
> Alan Mackenzie (Nuremberg, Germany).
>
>