GUI becomes defunct in certain screen layouts #36175

New Issue

Shannon Massman · 2013-07-17T11:16:05+02:00

Shannon Massman commented

2013-07-17 11:16:05 +02:00

%%%--- Operating System, Graphics card ---
Windows 7
NVidia GTX 660

- Blender version with error, and version that worked ---

broken: 2.68 (displays as "Blender 2.67b" v2.67.1 r57908)
working: unknown

- Short description of error ---

A screen/layout becomes corrupt, so that selecting that screen removes all GUI functionality. Blender appears to be crashed, and dragging the window leaves window repaint artifacts/patterns. However, keyboard shortcuts to switch layouts restore normal functionality. Returning to the corrupt layout reliably reproduces the problem.

- Steps for others to reproduce the error (preferably based on attached .blend file) ---

Open .blend file.
Select the "BrokenScreen" layout.

Notes:
I have had this problem on multiple .blend files. I've distilled and attached one. I have two displays. One is in portrait mode, and the other in landscape. I use screens on both simultaneously. I believe some combination of resizing/moving/entering full-screen/maximizing areas/selecting screens/deleting screens caused it, but I couldn't identify what precisely. It seems the fundamental resulting technical problem was the invalid area location/dimensions, as per screenshot.
%%%

%%%--- Operating System, Graphics card --- Windows 7 NVidia GTX 660 - Blender version with error, and version that worked --- broken: 2.68 (displays as "Blender 2.67b" v2.67.1 r57908) working: unknown - Short description of error --- A screen/layout becomes corrupt, so that selecting that screen removes all GUI functionality. Blender appears to be crashed, and dragging the window leaves window repaint artifacts/patterns. However, keyboard shortcuts to switch layouts restore normal functionality. Returning to the corrupt layout reliably reproduces the problem. - Steps for others to reproduce the error (preferably based on attached .blend file) --- Open .blend file. Select the "BrokenScreen" layout. Notes: I have had this problem on multiple .blend files. I've distilled and attached one. I have two displays. One is in portrait mode, and the other in landscape. I use screens on both simultaneously. I believe some combination of resizing/moving/entering full-screen/maximizing areas/selecting screens/deleting screens caused it, but I couldn't identify what precisely. It seems the fundamental resulting technical problem was the invalid area location/dimensions, as per screenshot. %%%

Shannon Massman commented

2013-07-17 11:16:05 +02:00

Changed status to: 'Open'

Campbell Barton commented

2013-07-17 12:08:53 +02:00

%%%Hi Shannon, I checked the file and can confirm that there is a corrupt screen layout, but (mostly) on its own this isn't enough to fix the bug.

We need to know how it became corrupt - the steps to redo creation of a corrupt screen, so we can prevent it from happening in future.

If we cant redo the bug its possible the data became corrupt some other way (bad memory, disk sector etc) - and we can't support this kind of corruption well.%%%

%%%Hi Shannon, I checked the file and can confirm that there is a corrupt screen layout, but (mostly) on its own this isn't enough to fix the bug. We need to know how it became corrupt - the steps to redo creation of a corrupt screen, so we can prevent it from happening in future. If we cant redo the bug its possible the data became corrupt some other way (bad memory, disk sector etc) - and we can't support this kind of corruption well.%%%

Shannon Massman commented

2013-07-17 13:11:42 +02:00

%%%I understand, and I'll keep trying to correlate it to events.

I'm more likely to push the envelope on the type of operations that caused this, and track down the defect, if there is a fairly straightforward way to remove the corrupt screens from my .blend. Does "bpy.data.screens['BrokenScreen'].user_clear()" make sense for this?
%%%

%%%I understand, and I'll keep trying to correlate it to events. I'm more likely to push the envelope on the type of operations that caused this, and track down the defect, if there is a fairly straightforward way to remove the corrupt screens from my .blend. Does "bpy.data.screens['BrokenScreen'].user_clear()" make sense for this? %%%

Shannon Massman commented

2013-07-18 03:22:23 +02:00

%%%This worked for me to delete it, so I'll try occasionally to break my working documents.%%%

Campbell Barton commented

2013-07-18 03:48:27 +02:00

%%%closing this report since we need steps to redo bugs.
please make a new report with steps to redo if you manage to find the cause.

%%%

%%%closing this report since we need steps to redo bugs. please make a new report with steps to redo if you manage to find the cause. %%%

Campbell Barton commented

2013-07-18 03:48:27 +02:00

Changed status from 'Open' to: 'Archived'

Campbell Barton closed this issue

2013-07-18 03:48:27 +02:00

Roman K commented

2013-09-03 20:28:10 +02:00

%%%I filed a new report with the steps to reproduce this. It's #36652.

Meanwhile, I need a way to remove the defunct screens. Somehow user_clear() doesn't work on them. The user count resets to zero but the screens are still in the blend after saving and reloading. I can't seem to find any another way to get rid of them via UI or python.%%%

%%%I filed a new report with the steps to reproduce this. It's #36652. Meanwhile, I need a way to remove the defunct screens. Somehow user_clear() doesn't work on them. The user count resets to zero but the screens are still in the blend after saving and reloading. I can't seem to find any another way to get rid of them via UI or python.%%%

Roman K commented

2013-09-04 08:38:59 +02:00

%%%Ok, I've managed to partially solve the problem with deleting corrupt screen layouts by assigning a keyboard shortcut to bpy.ops.screen.delete() but it only worked for three of the five corrupt layouts I had in the blend. Somehow the remaining two don't let the command go through even though they react to Ctrl+Right/Left Arrow as expected. Hopefully that helps someone else if they come across this issue.%%%

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GUI becomes defunct in certain screen layouts #36175