11.3.1 development build 31 for XO-1.75

Martin Langhoff martin at laptop.org
Tue Mar 20 20:38:50 EDT 2012

"Are we there yet?"

This build brings fixes for two critical camera and Sugar crash bugs.

Updatable via olpc-update -- try the cmdline below.


 - Building the first ARM RC in a couple of hours, based on this build.

 - Building XO-1 and XO-1.5 OS31 builds for testing tomorrow.

 - The getty on the serial port is _disabled_ by default now (that's
the workaround). It gets enabled when you hold the "check" game key
during boot (for verbose boot).

Upgrade online with:

  olpc-update 11.3.1_xo1.75-31

Download from:


Fixes (please help us confirm):

#11657 XO-1.75 "Kernel panic- not syncing" while using Record
#11698 Python segfault / error 4 in libglib-2.0.so



Kernel changelog

Andres Salomon (4):
      Revert "ARM: mmp: Implement periodic timer mode."
      ARM: mmp: timer cleanups
      ARM: mmp: further timer cleanups
      ARM: mmp: implement read_persistent_clock()

Chris Ball (1):
      Revert "mmp-driver.c: Protect access to mmp registers with
dev_lock mmpcam_power_down."

Jonathan Corbet (6):
      marvell-cam: Remove broken "owner" logic
      marvell-cam: Increaase the DMA shutdown timeout
      marvell-cam: fix the green screen of death
      marvell-cam: Don't signal multiple frame completions in
scatter/gather mode
      mmp-camera: Don't power up the sensor on resume
      marvell-cam: Demote the "release" print to debug level

Paul Fox (1):
      implement calibration for the raydium touchscreen

Peyton Huang (3):
      siv120d: Fix clock divider setting
      siv120d: Keep 30 fps in dark lighting condition
      siv120d: Corrected vendor recommended values

Saadia Baloch (2):
      mmp-driver.c: Protect access to mmp registers with dev_lock
      Revert "mmp2-pcm.c: Protect audio DMA from interrupts"


 martin at laptop.org -- Software Architect - OLPC
 - ask interesting questions
 - don't get distracted with shiny stuff  - working code first
 - http://wiki.laptop.org/go/User:Martinlanghoff

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