[PATCH v2 app/xrandr] Document that --dpi and --fbmm options set DPI of whole X screen

[Pali Rohár]

PING xorg-devel list.

Is something older needed to rework? If not, can you apply this patch?

On Monday 07 August 2017 18:45:22 walter harms wrote:
> Sorry, i had the idea you already got my ack.
> 
> Reviewed-by: Walter Harms wharms at bfs.de
> 
> Am 07.08.2017 12:56, schrieb Pali Rohár:
> > walter, any other objections? I fixed problematic parts which you pointed.
> > 
> > On Monday 24 July 2017 20:34:39 Pali Rohár wrote:
> >> Explicitly document and make it clear that those options do not change
> >> DPI of some monitor output. Also state that these options have no useful
> >> meaning for multi-monitor configuration.
> >>
> >> Signed-off-by: Pali Rohár <pali.rohar at gmail.com>
> >> ---
> >>  man/xrandr.man |   14 ++++++++++----
> >>  1 file changed, 10 insertions(+), 4 deletions(-)
> >>
> >> diff --git a/man/xrandr.man b/man/xrandr.man
> >> index 65ccc2a..a5476d4 100644
> >> --- a/man/xrandr.man
> >> +++ b/man/xrandr.man
> >> @@ -232,14 +232,20 @@ fit within this size. When this option is not provided, xrandr computes the
> >>  smallest screen size that will hold the set of configured outputs; this
> >>  option provides a way to override that behaviour.
> >>  .IP "\-\-fbmm \fIwidth\fPx\fIheight\fP"
> >> -Sets the reported values for the physical size of the screen. Normally,
> >> +Sets the reported values for the physical size of the whole X screen (not particular
> >> +output!) which consists of all configured monitors. Physical size of the X screen does
> >> +not have any meaning when monitors with different DPI are configured. Normally,
> >>  xrandr resets the reported physical size values to keep the DPI constant.
> >> -This overrides that computation.
> >> +This overrides that computation. This option should be calculated from DPI
> >> +value 96 as it not have any useful meaning for multi-monitor configuration.
> >>  .IP "\-\-dpi \fIdpi\fP"
> >>  .IP "\-\-dpi \fIfrom-output\fP"
> >> -This also sets the reported physical size values of the screen, it uses either
> >> +This also sets the reported physical size values of the whole X screen (not particular
> >> +output!) which consists of all configured monitors. Physical size of the X screen does not
> >> +have any meaning when monitors with different DPI are configured. This option uses either
> >>  the specified DPI value, or the DPI of the given output, to compute an appropriate
> >> -physical size using whatever pixel size will be set.
> >> +physical size using whatever pixel size will be set (default 96 DPI). It does not
> >> +have any useful meaning for multi-monitor configuration.
> >>  .IP "\-\-newmode \fIname\fP \fImode\fP"
> >>  New modelines can be added to the server and then associated with outputs.
> >>  This option does the former. The \fImode\fP is specified using the ModeLine
> > 

-- 
Pali Rohár
pali.rohar at gmail.com