On Mon, Mar 26, 2018 at 1:19 AM, Ben Stern <bas-savannah@xxxxxxxxx> wrote:
Hi Behdad,
I used KDE to set the DPI, but I don't use a desktop environment in normal
life. Is there truly no way to set different resolutions without using a
desktop environment? How does GNOME do it? It must tell fontconfig
somehow, mustn't it?
Desktop environments can handle multiple differing display densities in different ways. They can rescale the application for example, and I *think* that's what GNOME does. They can also tell fontconfig different DPI numbers at run-time, but that's really not the hard part about it.
Thanks,
Ben
On Mon, Mar 26, 2018 at 01:16:51AM -0700, Behdad Esfahbod wrote:
> Hi Ben,
>
> You need a desktop environment that supports different DPIs across
> different displays. I *think* most recent versions of GNOME do that but I'm
> not sure.
>
> behdad
>
> On Mon, Mar 26, 2018 at 12:52 AM, Ben Stern <bas-savannah@xxxxxxxxx> wrote:
>
>> In my fontconfig/conf.d, I can specify fontconfig XML which states a given
>> DPI, but I can't specify this per-head.
>>
>> I'm running multihead on monitors with different resolutions, and my
>> choices
>> are huge fonts on the lower-resolution monitor and normal sizes on the
>> higher resolution monitor, or unreadably small fonts on this hi-res monitor
>> and normal size on the low-res monitor.
>>
>> xdpyinfo | grep inch correctly tells me
>> on :0.0: 157x157 dots per inch
>> on :0.1: 94x94 dots per inch
>>
>> xrdb -query | grep dpi correctly tells me
>> on :0.0 XFt.dpi: 157
>> on :0.1 XFt.dpi: 94
>>
>> farad:~/.config/fontconfig/conf.d$ grep -i -A2 dpi *
>> 19-DisplayProperties.conf: <edit name="dpi" mode="assign"
>> binding="same">
>> 19-DisplayProperties.conf- <double>157.0</double>
>> 19-DisplayProperties.conf- </edit>
>>
>> Note that without the 19-DisplayProperties.conf setting the DPI to 157
>> explicitly, the menus and other fontconfig-rendered text on my hi-res
>> monitor appears to be defaulting to the historic 96 DPI setting, and are
>> therefore tiny, because they're approximately 60% of the size they ought to
>> be.
>>
>> How can I tell fontconfig to use the correct DPI on a given head?
>>
>> (I tried to open this as a bug and was directed here instead.)
>>
>> Thanks,
>> Ben
--
Ben Stern
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