** Summary changed:
- Gtk-WARNING ... drawing failure for widget ... invalid value (typically too
big)
+ Gtk-WARNING ... drawing failure for widget ... invalid value (typically too
big) [using three 4K monitors]
** Tags added: nvidia
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** Changed in: gtk
Status: Unknown => New
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https://bugs.launchpad.net/bugs/2004533
Title:
Gtk-WARNING ... drawing failure for widget ... invalid value
It doesn't really help. I was just searching the code for an explanation
of the message.
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Title:
Gtk-WARNING ...
what does that mean for me?
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Title:
Gtk-WARNING ... drawing failure for widget ... invalid value
(typically too big)
And I just realized the message "invalid value (typically too big)" is
from the Cairo library. It's the description for
CAIRO_STATUS_INVALID_SIZE.
** Also affects: cairo (Ubuntu)
Importance: Undecided
Status: New
** Changed in: cairo (Ubuntu)
Status: New => Triaged
** Changed
Although this suggests the bug was in 20.04 as well:
https://gitlab.gnome.org/GNOME/gtk/-/issues/3050
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Title:
GTK4 is already in Ubuntu and the GNOME developers are planning GTK5.
The bigger issue here is that apps haven't moved away from GTK3 yet. For
you that includes Desktop Icons NG, Firefox and Thunderbird.
If 22.04 worked then yes please do go back to that. It's also supported for
much longer:
will gtk4 come with 23.04?
Should I wait or just bite the bullet and reinstall (what a pain) as it
worked flawlessly on 22.04?
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After you turn off fractional scaling you can still adjust font sizes
using the gnome-tweaks app.
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Title:
> would it be bad to enable developer updates / proposed kinetic
updates?
Yes that would be bad. You would get untested updates across all
packages. Doing so usually breaks your system after a while.
> Very odd, I'm only using a scale of 1.25
Ah you are right. Setting 125% I also see Xorg using
would it be bad to enable developer updates / proposed kinetic updates?
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Title:
Gtk-WARNING ... drawing failure for
Very odd, I'm only using a scale of 1.25
** Attachment added: "125-scale.jpg"
https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/2004533/+attachment/5645548/+files/125-scale.jpg
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** Changed in: gtk+3.0 (Ubuntu)
Importance: Undecided => Medium
** Changed in: gtk+3.0 (Ubuntu)
Status: Confirmed => Triaged
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Out of curiosity, how did you configure a scaling factor of 1.6?
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Title:
Gtk-WARNING ... drawing failure for widget
And yes that is an inefficient way to do fractional scaling. Only Xorg
does it that way out of necessity to fit in with legacy X11. Wayland
does not need such upscaling-then-downscaling so does fractional scaling
much more efficiently than Xorg sessions.
But Nvidia's Wayland support is still
Another suggestion is to use a scaling factor of 1.5 instead of 1.6.
That might simplify the required quotient to 3/2 (initially rendering at
3x resolution instead of 8x), so might be enough to have all three
monitors working.
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To achieve a scaling factor of 1.6 I suspect the logic is to render at
8x resolution and then downscale 5x (because 8/5 = 1.6). And GTK has
internal size limits of 65535 in each dimension, I think. So the maximum
window size is 65535 / 8 = 8191. That should be enough to have two 4K
(3840 px)
Tracking upstream in https://gitlab.gnome.org/GNOME/gtk/-/issues/3050
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Title:
Gtk-WARNING ... drawing failure for
I think this is a consequence of your desktop being 18432 pixels wide.
Each 4K monitor is 6144 logical pixels wide because of a custom Xrandr
scaling factor of 1.6.
Turning off screens wouldn't fix it, only unplugging them might. But
still this sounds like a GTK bug because modern Nvidia GPUs
I can also confirm that the problem persists after a fresh boot, turning
off 2 screens, and only using the main screen at 100% scale.
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attached
** Attachment added: "xrandr.txt"
https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/2004533/+attachment/5645339/+files/xrandr.txt
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Yes this sounds like a GTK-only bug, probably new in Ubuntu 22.10. But
potentially related to that, please run:
xrandr --verbose > xrandr.txt
and attach the resulting text file here.
Also remember one of the issues you mentioned earlier is likely to be
bug 1876632 so please read that.
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Hi Daniel,
It worked flawlessly for about a year, and only started doing this
(immediately) after the update to 22.10. I used fractional scaling for
the past year as well with no issues.
I have already tried changing the resolution back to just plain 100% 4k
and it's the exact same with all
** Summary changed:
- very unstable desktop, icons vanish, cannot control windows, cannot resize or
scale multi monitors easily.
+ Gtk-WARNING **: ...: drawing failure for widget '...': invalid value
(typically too big)
** Summary changed:
- Gtk-WARNING **: ...: drawing failure for widget
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