feature request: per-display scaling

[jddinneen]

The display scaling widget works well for scaling every display together, and the display manager works well for arranging the outputs, but putting one UI scaling value on multiple displays can make UIs too small or large on some displays.

Could per-display scaling be added to the display manager? Xrandr seems to support this currently.

For example, when I plugged my 1080p monitors into my 4k display laptop, I used the manager to arrange the displays and make a profile - this works brilliantly - but to use the external displays I have to set the scaling to 1.0, which makes non-deepin windows (like Chrome) too small on the laptop display.

Thanks for your work; I really enjoy using deepin at work and at home!

[kangzj]

same situation here as well. I think it's quite common for developers. Can you guys please consider the support of this feature.

[sonald]

this is great recommendation. but there are amounts of effort to be put into it to make it real.

[kangzj]

Hi sonald,
thank you for your reply.
I got a question for you :-) where can I find the cursor size settings please? So that I could do a work-around. The extended display is good enough for now except for the huge cursor.
Deepin OS is the best desktop distro ever. You guys rock.
Regards,
Jasper

[sonald]

@sbwtw

[edTheGuy00]

It seems like they began working on this already. But at the moment it's not perfect. Only some apps works, primarily the deepin apps, but most of everything remains huge on my external FHD monitor (My Laptop is 3k).

Either way Good job guys!!

[BLumia]

associate: linuxdeepin/internal-discussion#985

[MasterJubei]

Where is this enabled? I am on 4.10.12 and I don't see anything for dpi per display.

[chirs241097]

Where is this enabled? I am on 4.10.12 and I don't see anything for dpi per display.

Add these lines to /etc/deepin/dde-control-center.conf

[Display]
AllowEnableMultiScaleRatio=true

Then logout and login again.
FYI if a feature is disabled by default, it might be either untested or buggy. Use at your own risk.

[MasterJubei]

Thanks, the setting does apply. And you are correct, it is quite buggy and does not work properly. Tried to set main display to 1.5x and side monitors to 1x, it does not seem to do anything.

[chirs241097]

Thanks, the setting does apply. And you are correct, it is quite buggy and does not work properly. Tried to set main display to 1.5x and side monitors to 1x, it does not seem to do anything.

You have to logout and back in so that the changes can take effect.

[MasterJubei]

I did, but it still doesn't do anything for me. The main monitor is still scaled to 1.5x, but dragging any window to the other monitors is still very large. Tried with native Deepin file manager and a few others.

[chirs241097]

I did, but it still doesn't do anything for me. The main monitor is still scaled to 1.5x, but dragging any window to the other monitors is still very large. Tried with native Deepin file manager and a few others.

Could you please check whether the environment variable QT_SCREEN_SCALE_FACTORS is set?

[MasterJubei]

I typed printenv and there is no mention of QT_SCREEN_SCALE_FACTORS in the output

I should mention I am using Manjaro Deepin, and after changing the display scaling per monitor, my icons reset and cannot be changed. This occured for me right after clicking and dragging each display's scaling and logging out. Clicking on the theme icons in the control center changes folder icons in Nautilus but not for the Deepin tray or in the Deepin file manager.

https://i.imgur.com/sXzQKO2.png
Should have the dark blue folder icons, but it is set to the bright ones now.

[KaKi87]

Hey everybody,

As stated in the development planning on Deepin's official website, I was impatiently waiting for Deepin v15.11 to have the multi monitor multi DPI feature so I've just installed it but I don't have these settings as shown in your screenshots :/

Did I forgot something ?

Thanks