#12872 HIGH -: Desktop instability in Ceibal Builds

Zarro Boogs per Child bugtracker at laptop.org
Wed Mar 18 16:42:51 EDT 2015

#12872: Desktop instability in Ceibal Builds
            Reporter:  ebordon       |          Owner:  Quozl
                Type:  defect        |         Status:  assigned
            Priority:  high          |      Milestone:
           Component:  not assigned  |        Version:  Development build
          Resolution:                |  as of this date
          Blocked By:                |       Keywords:
Deployments affected:                |       Blocking:
            Verified:  0             |  Action Needed:  design

Comment (by Quozl):

 Thanks for the logs.
  * ''Driver failed PrepareAccess on a pinned pixmap.'' was in
 1426699065.417621859/var/log/Xorg.0.log.old, which had been seen once
 before around 6th March, and would have caused a desktop restart.  There
 is a possibility that this message may be caused by out of memory

 Testing of 13.2.3 build 16, which has Fedora 18 X server, with Browse
 against http://ceibal.edu.uy/
  * no hang over 12 hours,
  * after 12 hours, system very slow; X process consuming 100% of CPU
  * X virtual size 170 MB,
  * Browse virtual size 339 MB.

 Testing of 14.1.0 build 8, which has Fedora 20 X server and not Vivante X
 server, with Browse against http://ceibal.edu.uy/
  * no hang over 30 minutes,
  * slow and cyclic growth and shrinkage of virtual memory size of both
 Browse and X processes,
  * X process is consuming 100% of CPU cycles.

 Therefore the Vivante X server is implicated as a cause.

 The http://ceibal.edu.uy/ test case is now critical to this problem,
 please advise if it is changed.

Ticket URL: <http://dev.laptop.org/ticket/12872#comment:8>
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