sddm doesn't have hidpi support

I am using the latest Tumbleweed 20210106, sddm version 0.19.0.

The sddm font is super small, not properly scaled.
I have tried adding “EnableHiDPI=true” in /etc/sddm.conf.d/hidpi.conf and /etc/sddm.conf, neither of them work.

Any idea?

Check /usr/lib/sddm/sddm.conf.d/General.conf – it usually has “EnableHiDPI=true” …
Please check this thread – <>

ServerArguments=-nolisten tcp -dpi 148

Solves my problem. Thanks!