Sorry, we do not support this feature now. If you set it by XResources, is it work?

No, it doesn't. Other programs do get scaled after applying it to Xresources. However, Deepin itself does not.

@hualet @sbwtw

DDE components have no hiDPI support yet, but we've been working on the fundamentals. Much work need to be done to get DDE ready for hiDPI support, so please wait.

Is there any progress on this issue?

xrandr -s 1920x1080 (you can find the list of resolutions with just xrandr, choose the one that's half your current resolution) scales the DE, but it's not HiDPI anymore. Besides, there are some issues with 4x scaling, e.g. cursor is huge while hovering over "dock".

Is it just me or clicking any of the display resolutions in the Deepin control center just highlights the listed resolution only? Are they not supposed the switch resolutions upon click immediately?

I have to use what @vshatskyi suggested above to downgrade my display to 2880x1620 so this is a very anticipated feature.

EDIT: I can't get the resolution setting to stick after reboot. Additionally, it also resets back to 3840x2160 if one clicks on the "home" icon in the Deepin control center, FYI.

Oh sorry, just been very busy with the 15.4 Alpha stuff and didn't notice the replies here.

15.4 is a big project so we didn't get much time to make the GUI stuff of DDE hiDPI ready yet, but I think it won't take long after the Spring Festival holiday to get all this done, so please stay tuned 😂

The issue bothering @pingram3541 needs some investigation, which @jouyouyun can help.

I'm running Manjaro 16.10.3 build of Arch as well if that helps. I'm excited for 15.4 too, cheers =)

Any update? I know people are busy, but I just started using deepin on my Archlinux installs and I really like this. Problem is the one machine uses a 55 inch 4k tv for a monitor. I can still survice through the greeter, but have to use cinnamon on that machine as deepin is unusable there. I'm interested to see when this feature is worked in.

+1 for HiDPI support.

Great UI but a lot of issues on 4K laptop screen.

+1 for HiDPI support. Love the way deepin runs and looks!

Exec gsettings set com.deepin.xsettings scale-factor <value> will change DPI, it will increase pixelsPerPx for gtk apps. Firefox will work after login.
The value should > 0.

@jouyouyun will deepin itself be scaled after this change?

Lets place a big +1 for HiDPI here. 1080p looks hard to on a 15" display. Cant imagine you guys on a 14" surface display.

+1 In my opinion you should really care about HiDPI support. It's unusable on 4k 15'' screen.

I have a 4K screen and I just switch it to 1080p, and everything is fine. HiDPI would be nice, I guess, but since many applications on Linux still don't know what to do with themselves on HiDPI screens, it isn't all that helpful for the DE alone to support it.

+1

The devs have acknowledged the issue as already stated in the previous comment, theres no need to raise the same set of concerns repeatedly. Just use GitHub reaction on certain message to mark your 👍 :)

It's possible to contribute for the HiDPI support ?

1920x1080 works fine in my 4k 15.6 notebook screen. I really can "be alive" with this till the most important things get done. Thank you developpers for your great overall work!

I cannot change my display resolution...

when there is a support of hidpi?

Still working on it, hopefully the next release (15.5) will hiDPI compatible.

On Dell XPS 13 FHD, changing the gsettings scale makes the OS very usable (terminal, chrome, desktop, fonts, etc), thanks for the info, currently using scripts to toggle hidpi/lowdpi like:

gsettings set com.deepin.xsettings scale-factor 1.25
gsettings set com.deepin.xsettings gtk-cursor-theme-size 30
gsettings set com.deepin.dde.dock icon-size 48
pkill -KILL -u username

gsettings set com.deepin.xsettings scale-factor 1
gsettings set com.deepin.xsettings gtk-cursor-theme-size 24
gsettings set com.deepin.dde.dock icon-size 36
pkill -KILL -u username

edit - if someone knows a better command to restart the UI without losing all windows, let me know

I love Deepin but I'm really struggling with my 4K monitor, the font rendering and things like dragging Windows etc looks atrocious, if I set the proper 4K resolution then I can't even read anything and the whole UI appears in miniature.

I really can't wait for the 15.5 release.

Since deepin 15.5 Beta is in public now, I think I can finally close this old issue now 😃