On Mon, Nov 23, 2009 at 03:51:27PM -0500, Adam Jackson wrote:
On Mon, 2009-11-23 at 12:59 -0700, Michal Jaegermann wrote:
> 'man -k mode | grep VESA' prints
>
> cvt [] (1) - calculate VESA CVT mode lines
> gtf [] (1) - calculate VESA GTF mode lines
>
> but what is a difference?
....
They're both timing generation formulas. GTF is older, a bit more
complex, and generally matches the physical requirements of CRTs. CVT
is newer, simpler, and has a cheat code for reduced bandwidth
consumption on LCDs. This is important, among other reasons, because
the DVI link speed is 165MHz:
....
tl;dr version: GTF for CRTs, CVT for LCDs.
Thanks a bunch for these explanations. It would be nice, though, if
manpages would mention some of that and mutual cross-references in
SEE ALSO sections would be also not out of order.
Michal