Re: install/59485: sysinst unusable on smaller framebuffer resolutions

["Michael van Elst via gnats" <gnats-admin%NetBSD.org@localhost>]

The following reply was made to PR install/59485; it has been noted by GNATS.

From: Michael van Elst <mlelstv%serpens.de@localhost>
To: Valery Ushakov <uwe%stderr.spb.ru@localhost>
Cc: gnats-bugs%netbsd.org@localhost
Subject: Re: install/59485: sysinst unusable on smaller framebuffer
 resolutions
Date: Thu, 26 Jun 2025 06:36:22 +0200

 On Thu, Jun 26, 2025 at 02:25:34AM +0300, Valery Ushakov wrote:
 > Thanks.
 > 
 > This seems to help in my case, the font is not changed and the
 > terminal is large enough.  Though from just looking at it I wonder
 > ... afaiu it will now return 0 when hsize is 0.  I haven't checked the
 > caller to see what it does in that case.
 
 It's passed to rasops_init, which then uses the default.
 
 	if (wantcols == 0)
 		wantcols = RASOPS_DEFAULT_WIDTH;
 
 But you are right, genfb_calc_cols should return that itself when
 hsize is zero.
 
 
 > As an aside - when the font is not changed the visual jitter still
 > happens on the monitor.  I wonder if that can be avoided.
 
 Visual jitter is usually caused by a video signal that doesn't
 match what the monitor expects. I also have a system like that,
 but assumed that it's just a bad VGA cable, also because it also
 affects the BIOS/UEFI display.
 
 
 Greetings,
 -- 
                                 Michael van Elst
 Internet: mlelstv%serpens.de@localhost
                                 "A potential Snark may lurk in every tree."