#10996 NORM 1.75-so: XO-1.75 A3 camera kernel messages

Zarro Boogs per Child bugtracker at laptop.org
Mon Jun 13 19:38:01 EDT 2011

#10996: XO-1.75 A3 camera kernel messages
 Reporter:  Quozl   |                 Owner:  corbet                           
     Type:  defect  |                Status:  new                              
 Priority:  normal  |             Milestone:  1.75-software                    
Component:  kernel  |               Version:  Development build as of this date
 Keywords:          |           Next_action:  diagnose                         
 Verified:  0       |   Deployment_affected:                                   
Blockedby:          |              Blocking:                                   
 During runin test on 11.1.0 build os9, over four hours, there are 31457
 messages from the kernel of which most are apparently triggered by the
 camera test.

  * 28370 instances of ''mmp-camera mmp-camera.0: Frame overrun on 2,
 frames lost'', where N ranges fairly equally over 0, 1 and 2.
  * 2836 instances of ''mcam_frame_complete: N callbacks suppressed'',
 where N ranges from 78 to 95, with the most frequent value 89,

 The camera test does this:

 /usr/bin/gst-launch v4l2src ! ffmpegcolorspace ! videoscale ! ximagesink

 I ask:
     * are there any configuration methods to suppress the kernel messages?
 Such as restricting the frame rate of the input.
     * are the kernel messages benign? If yes, this ticket can be closed.

Ticket URL: <http://dev.laptop.org/ticket/10996>
One Laptop Per Child <http://laptop.org/>
OLPC bug tracking system

More information about the Bugs mailing list