Window buttons and window edges are not rendered/designed cleanly - Ubuntu 17.10 Gnome

Bug #1727269 reported by Ragnar Dunbar on 2017-10-25
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Ubuntu theme
Undecided
Unassigned
gnome-shell (Ubuntu)
Low
Unassigned
ubuntu-themes (Ubuntu)
Low
Unassigned

Bug Description

Window buttons and window edges are not rendered/designed cleanly - Ubuntu 17.10 Gnome. This is really just a cosmetic issue. The window edges (mostly only top left) and window buttons were sharper and clearer in Ubuntu 16.04 und the versions before. The rough window egdges do not appear in all windows, it is especially obvious with Firfox. The impression with the buttons is always present.

This is apparent in stock Ubuntu 17.10 on various laptops (Thinkpad x220, Acer Aspire 5253, Macbook Pro late 2010).

Daniel van Vugt (vanvugt) wrote :

I'm looking at both 16.04 and 17.10 on identical monitors and can't see the problem you're talking about.

Can you take screenshots of the issue? Just press PrtScn and then look in your Pictures...

Changed in gnome-shell (Ubuntu):
status: New → Incomplete
Daniel van Vugt (vanvugt) wrote :

Also, are you looking at the laptop screens or VGA output? Just need to ask :)

Changed in gnome-shell (Ubuntu):
importance: Undecided → Low
Ragnar Dunbar (zaroff) wrote :

Thanks for your quick reply. No, its on the Laptop screen with the correct driver for each laptop in place. Maybe I'm a little too sensitive for these cosmetic issues, the difference strikes me immediately. Maybe its just because the buttons are scaled a little bigger in 17.10. I see grey pixels inside the red close button. It looks cleaner in 16.04. Screenshots attached.

Ragnar Dunbar (zaroff) wrote :

And the Screenshot for 16.04.

Daniel van Vugt (vanvugt) wrote :

I have put your two screenshots side by side, flipped, and zoomed in. See attached.

It appears there is no difference in the window decoration edges (although the different wallpaper colour behind makes them look different).

There is definitely a change in the X button design that is now visible.

Changed in gnome-shell (Ubuntu):
status: Incomplete → Triaged
Changed in ubuntu-themes (Ubuntu):
importance: Undecided → Low
status: New → Triaged
Ragnar Dunbar (zaroff) wrote :

In the attached screenshot one can see that there is a difference in the color of the outer pixels of the screen edge. In 17.10 there is a darker grey. Both windows were in the front, when the screenshots were taken. To me, due to the less smooth transition of colors, the screen edges in 17.10 look somewhat rough, ripped.

Ragnar Dunbar (zaroff) wrote :

The above mentioned darker window edges in 17.10 do not appear in all windows. They appear in Firefox, Thunderbird and e.g. the Gnome Terminal (maybe this has to do with gnome-terminal being at 2.24). The window decorations in for example the file-manager are not affected.

Daniel van Vugt (vanvugt) wrote :

I see, thanks. Yes it sounds like legacy X apps are the ones affected.

Native Wayland apps (Gnome 3.x) are not affected.

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