3 ms·

> Maybe it'll be better on linux Nope. Scaling is supported by Gtk3 (but you can only scale by integer - 2x, 3x) and Qt5. A lot of apps are still using Gtk2 an

by jacek 10y ago

> Maybe it'll be better on linux Nope. Scaling is supported by Gtk3 (but you can only scale by integer - 2x, 3x) and Qt5. A lot of apps are still using Gtk2 and Qt4. It is a mess. I wish I had an FHD display instead of WQHD.

hansjorg 10y ago
Can't you just set it to FHD?
- jacek 10y ago
  Not without having fuzzy text. I explained it once on reddit: > Is there any difference between FHD monitor and WQHD in FullHD mode? Yes, there is. WQHD is 2560x1440 pixels. If you set your resolution to half that (in width and height) it is 1280x720 (2560/1280=2, 1440/720=2). In that case every software pixel is represented by 4 physical pixels (2x2) and we are fine. If you set resolution to 1920x1080 (FHD): 2560/1920 = 1.33, 1440/1080=1.33 . And we know there is no 1.33 physical pixel! So the image becomes distorted and looks bad.
  - hansjorg 10y ago
    Good point. What about GPU scaling though? Doesn't Nvidia and AMD drivers support that for lower than physical resolutions?
    - jacek 10y ago
      Not that I know of. Screen can be scaled with xrandr (on X11), but that significantly decreases performance. There's a chance of making it work on Wayland (modern replacement for X11) in the future.
  - vetinari 10y ago
    It doesn't have to look bad. rMBP13 has physical resolution 2540x1600 (i.e. 1280x800 x 2). The control panel offers resolutions 2880x1800 (1440x900 x 2) and 3360x2100 (1680x1050 x 2), that the GPU will scale down to 2540x1600. And these resolutions look good and sharp. In fact so good, that the final resolution depends only on what physical size / working space you prefer, not which one looks good and which one doesn't.
    - jacek 10y ago
      I tried 1980x1080 on my 2560x1440 screen. I don't think it looks very well.
      - vetinari 10y ago
        That MBP has physical 227 DPI. What's yours? (If it is 2560x1440 at 24", it has only 122 DPI).
        jacek 10y ago
        > That MBP has physical 227 DPI. What's yours? (If it is 2560x1440 at 24", it has only 122 DPI). It is a 14 inch WQHD (2560 x 1440) display (Lenovo Thinkpad X1 Yoga)
    - kalleboo 10y ago
      Keep in mind that Apple claims they developed custom scaling algorithms to handle these downscale modes, so a PC user doing the same thing using GPU drivers might not get as good results.
bonyt 10y ago
Well, if you use the gtk3 hidpi settings, yes. However, if you disable the HiDPI, scale it to 1x, and then set the font "Scaling Factor" in gnome-tweak-tool to something else, say, 1.25, (a non-integer!) it works great!
- jacek 10y ago
  For Gtk3 apps it works reasonably well (it scales text, but not buttons, widgets, etc). There's nothing you can do with Gtk2, Qt4 apps though (other than changing font size).

by jacek 10y ago

hansjorg 10y ago

Can't you just set it to FHD?

jacek 10y ago
Not without having fuzzy text. I explained it once on reddit: > Is there any difference between FHD monitor and WQHD in FullHD mode? Yes, there is. WQHD is 2560x1440 pixels. If you set your resolution to half that (in width and height) it is 1280x720 (2560/1280=2, 1440/720=2). In that case every software pixel is represented by 4 physical pixels (2x2) and we are fine. If you set resolution to 1920x1080 (FHD): 2560/1920 = 1.33, 1440/1080=1.33 . And we know there is no 1.33 physical pixel! So the image becomes distorted and looks bad.
- hansjorg 10y ago
  Good point. What about GPU scaling though? Doesn't Nvidia and AMD drivers support that for lower than physical resolutions?
  - jacek 10y ago
    Not that I know of. Screen can be scaled with xrandr (on X11), but that significantly decreases performance. There's a chance of making it work on Wayland (modern replacement for X11) in the future.
- vetinari 10y ago
  It doesn't have to look bad. rMBP13 has physical resolution 2540x1600 (i.e. 1280x800 x 2). The control panel offers resolutions 2880x1800 (1440x900 x 2) and 3360x2100 (1680x1050 x 2), that the GPU will scale down to 2540x1600. And these resolutions look good and sharp. In fact so good, that the final resolution depends only on what physical size / working space you prefer, not which one looks good and which one doesn't.
  - jacek 10y ago
    I tried 1980x1080 on my 2560x1440 screen. I don't think it looks very well.
    - vetinari 10y ago
      That MBP has physical 227 DPI. What's yours? (If it is 2560x1440 at 24", it has only 122 DPI).
      - jacek 10y ago
        > That MBP has physical 227 DPI. What's yours? (If it is 2560x1440 at 24", it has only 122 DPI). It is a 14 inch WQHD (2560 x 1440) display (Lenovo Thinkpad X1 Yoga)
  - kalleboo 10y ago
    Keep in mind that Apple claims they developed custom scaling algorithms to handle these downscale modes, so a PC user doing the same thing using GPU drivers might not get as good results.

bonyt 10y ago

Well, if you use the gtk3 hidpi settings, yes. However, if you disable the HiDPI, scale it to 1x, and then set the font "Scaling Factor" in gnome-tweak-tool to something else, say, 1.25, (a non-integer!) it works great!

jacek 10y ago
For Gtk3 apps it works reasonably well (it scales text, but not buttons, widgets, etc). There's nothing you can do with Gtk2, Qt4 apps though (other than changing font size).