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Bug 354465 - Cover art plugin causes 100% CPU load
Cover art plugin causes 100% CPU load
Status: RESOLVED DUPLICATE of bug 80925
Product: rhythmbox
Classification: Other
Component: Plugins (other)
Other All
: Normal normal
: ---
Assigned To: RhythmBox Maintainers
RhythmBox Maintainers
Depends on:
Reported: 2006-09-05 16:17 UTC by Lauri Kainulainen
Modified: 2006-09-05 21:33 UTC
See Also:
GNOME target: ---
GNOME version: ---

Description Lauri Kainulainen 2006-09-05 16:17:05 UTC
Please describe the problem:
Just updated to ubuntu 6.10 and enabled the cover art plugin. When the window is open everything works fine (cover art is there, etc.), but when I hide the window and switch through the songs, at some point CPU usage goes to 100% and rhythmbox becomes slow.

Here's a traceback that pops up:

(19:03:54) [0x814b8e8] [rb_player_gst_sync_pipeline] rb-player-gst.c:597: PAUSING pipeline
(19:03:54) [0x814b8e8] [rb_player_gst_sync_pipeline] rb-player-gst.c:586: syncing pipeline
(19:03:54) [0x814b8e8] [rb_player_gst_sync_pipeline] rb-player-gst.c:588: PLAYING pipeline
/usr/lib/rhythmbox/plugins/artdisplay/ GtkWarning: gdk_pixbuf_scale_simple: assertion `dest_height > 0' failed
  self.current_pixbuf = old_pixbuf.scale_simple (int(ww), int(wh), gtk.gdk.INTERP_BILINEAR)
Traceback (most recent call last):
  • File "/usr/lib/python2.4/site-packages/PIL/", line 71 in playing_changed
  • File "/usr/lib/python2.4/site-packages/PIL/", line 101 in set_entry
  • File "/build/buildd/rhythmbox-0.9.5/debian/tmp//usr/lib/rhythmbox/plugins/artdisplay/", line 76 in get_pixbuf
  • File "/usr/lib/python2.4/site-packages/PIL/", line 106 in on_get_pixbuf_completed
  • File "/usr/lib/python2.4/site-packages/PIL/", line 144 in set_current_art
  • File "/usr/lib/python2.4/site-packages/PIL/", line 126 in fade_art
TypeError: GdkPixbuf.composite() argument 1 must be gtk.gdk.Pixbuf, not None
(19:03:54) [0x814b8e8] [rb_shell_player_set_playing_entry] rb-shell-player.c:1133: Success!

Steps to reproduce:
1. Start rhythmbox and enable cover art plugin
2. Close rhythmbox (not sure if needed), hide the window and start playback
3. Switch through the songs

Actual results:
CPU usage of rhythmbox goes up to 90-100%

Expected results:
Nothing special. Rhythmbox would function as usual.

Does this happen every time?
No. Happened more when I started cover art for the first time, but seemed to become more rare as I used rhythmbox (related to cache?)

Other information:
Comment 1 Jonathan Matthew 2006-09-05 21:33:22 UTC
This is a known problem with gdk's pixbuf scaling.  Since 0.9.5, we've added some checks to the art display plugin to prevent it from triggering the problem.

Thanks for the bug report. This particular bug has already been reported into our bug tracking system, but please feel free to report any further bugs you find.

*** This bug has been marked as a duplicate of 80925 ***