comments on vt as console...

[John-Mark Gurney]

So, I decided to play around w/ vt after the recent UTF-8 discussion,
and noticed some issues w/ it...

First, if you load the gallant font, things don't look very good...  This
is probably because of the fact that I'm using the vga driver:
VT: running with driver vga.

and the default resolution is 640x480... The gallant font is probably
much higher res, and when I load it, the text screen size drops to
53x21, and the text is all chopped off.  This is probably due to bad
calculation on scaling...

Second, once one vty has the gallant font loaded, if you switch vty's,
it can occure that the new vty does not display ANY text..  The display
is mostly blank...

Third, w/ the other font loaded, the border doesn't always properly
get cleared...

Fourth, when switching screens, there is a brief flash of vertical
stripes before the new screen comes on...  Can we do something to make
sure that this transition is clean?  Either a completely blank screen,
or ideally, no blank screen, but the new text appearing?

$ sysctl kern.vt
kern.vt.enable_altgr: 1
kern.vt.debug: 0
kern.vt.deadtimer: 15
kern.vt.suspendswitch: 1
$ uname -a
FreeBSD pciehp 11.0-CURRENT FreeBSD 11.0-CURRENT #3 r267710M: Thu Jul 31 
21:39:53 ICT 2014 
jmg@pciehp:/usr/home/jmg/freebsd.pciehp/sys/amd64/compile/GENERIC  amd64

Let me know if you need any more info.

Thanks.

-- 
  John-Mark Gurney  Voice: +1 415 225 5579

 All that I will do, has been done, All that I have, has not.
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Re: comments on vt as console...

[Ed Maste]

On 1 August 2014 17:18, John-Mark Gurney j...@funkthat.com wrote:
 So, I decided to play around w/ vt after the recent UTF-8 discussion,
 and noticed some issues w/ it...

 First, if you load the gallant font, things don't look very good...  This
 is probably because of the fact that I'm using the vga driver:
 VT: running with driver vga.

Yes, this is an issue with vt_vga, and affects fonts other than a
multiple of 8 pixels wide.  It's pr191591.

 Second, once one vty has the gallant font loaded, if you switch vty's,
 it can occure that the new vty does not display ANY text..  The display
 is mostly blank...

 Third, w/ the other font loaded, the border doesn't always properly
 get cleared...

 Fourth, when switching screens, there is a brief flash of vertical
 stripes before the new screen comes on...  Can we do something to make
 sure that this transition is clean?  Either a completely blank screen,
 or ideally, no blank screen, but the new text appearing?

I think #2 and #4 are variations on the same issue, and only affect
vt_vga as far as I know.  Can you submit a PR for that issue, and one
for #3?
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