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

[walter harms]

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
>