Gimp lags and misses some strokes especially when drawing fast

Bug #731088 reported by Šarūnas Valaškevičius on 2011-03-08
10
This bug affects 2 people
Affects Status Importance Assigned to Milestone
gimp (Ubuntu)
Undecided
Unassigned

Bug Description

Binary package hint: gimp

the same problem as in https://bugs.launchpad.net/ubuntu/+source/gimp/+bug/41798 , just I could not reopen that bug.

also written a comment there:
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yikes, digging up the same problem in ubuntu 10.10, while using KDE, (did not try to disable graphic effects yet)
the problem is not for signature drawing, it fits in buffer.

as I *guess*, gimp registers input events in a gueue and draws them later, the problem is for slower brushes or when drawing fast (or especially the combination :D) - after buffer is filled up, gimp stops listening for new events. Not sure if this is really the internal workings of gimp, but it describes the problem best.
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tags: added: lags tablet wacom

its sad to see that the bug exists in 2.7 gimp too.. (compiled from fresh HEAD sources)
also some debug output came up:
--------------------------
This is a development version of GIMP. Debug messages may appear here.

(gimp-2.7:13413): GLib-GObject-WARNING **: value "-2147483648" of type `gint' is invalid or out of range for property `cache-size' of type `gint'

(gimp-2.7:13413): Gimp-Display-CRITICAL **: gimp_display_shell_keyboard_ungrab: assertion `shell->keyboard_grabbed == TRUE' failed

(gimp-2.7:13413): Gimp-Display-CRITICAL **: gimp_display_shell_pointer_ungrab: assertion `shell->pointer_grabbed == TRUE' failed

(gimp-2.7:13413): Gimp-Display-CRITICAL **: gimp_display_shell_keyboard_ungrab: assertion `shell->keyboard_grabbed == TRUE' failed

(gimp-2.7:13413): Gimp-Display-CRITICAL **: gimp_display_shell_pointer_ungrab: assertion `shell->pointer_grabbed == TRUE' failed

(gimp-2.7:13413): Gimp-Display-CRITICAL **: gimp_display_shell_keyboard_ungrab: assertion `shell->keyboard_grabbed == TRUE' failed

(gimp-2.7:13413): Gimp-Display-CRITICAL **: gimp_display_shell_pointer_ungrab: assertion `shell->pointer_grabbed == TRUE' failed

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Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in gimp (Ubuntu):
status: New → Confirmed
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