MobileTeam Reporting Page

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Welcome to the MobileAndEmbedded reporting page. Every month this page reveals a snapshot of the work that has been going on in the Ubuntu Mobile and Embedded Community. If you have have been working hard on the project and want to let others know what you have been up to, try to summarize it here. Community contributions are actively encouraged. A few guidelines for how to write good points are:

• Keep it simple and short - single sentences are best.

• Try to summarise your work and not be over-detailed - we don't need to know specifics, just a summary of the kind
• Where possible, include relevant links.

You should get all your reporting included here by the 22nd of every month.

The Report

Ubuntu Mobile [http://kryten.incognitus.net/mootbot/meetings/ MootBot Logs]

Status report for week 51

Moblin Kernel and Driver Status

• 2.6.24 Kernel Support Alek continues to port the patches from 2.6.22 to 2.6.24. He is using/referencing the work previously done by Amit. PSB / SLT HW Support Jacob still owes me a patch to work around the MWAIT/local APIC timer issue. We decided to go with the plan to mark the MWAIT instruction broken in the kernel taking out the CPU_FEATURE_MWAIT after cpuid is read for the effected processor. SDIO

  Feng has released a kernel patch on moblin.org containing Marvell's GPL release of the 8688 WLAN + BT drivers. In the process we've removed the older & outdated MSS SDIO kernel patch from moblin.org. Pierre Ossman's SDIO stack is the only choice for SDIO support on moblin. Dabney Thermal patches No changes this week. USB Client Drivers Alek continues to add support for the USB Client solution that was described previously. I don't have an update on his status this week.

  PSB Gfx & Video Drivers Inuka has been investigating a bug with the PSB Gfx Beta3 RC driver where powertop is reporting that X is generating 120+ interrupts/second when the system is idle. This prevents the CPU from going into a

  lower power C state and blows battery life. The issue is believed to be in the implementation/design on the interface between closed & open pieces of the driver. After the holidays we'll be talking directly with the 3rd party developer to get this corrected. Power and Performance Testing/Optimization Jay has numbers that compares performance between the mobile browser compiled with gcc and browser compiled with Intel C/C++ compiler. As expected there are some significant improvement, for example browser startup appears to be about 25% faster with the version compiled with the Intel compiler. Before we get too excited, we need spend some time scrubbing the data and make sure the numbers we've collected are accurate.

Status report for week 02

Moblin Kernel and Driver Status

• 2.6.24 & 2.6.22 Kernel Support Alek set up a 2.6.24-rc5 kernel tree with Moblin patches on Moblin.org. In order to support both of 2.6.22 and 2.6.24 kernels we made relevant changes to have more consistent kernel package numbering:

  1. Original kernel-mid package was renamed to kernel-mid-2.6.22 and the binary packages it produced got renamed to linux-menlow-default-2.6.22 and linux-menlow-developer-2.6.22
  2. A new kernel-mid-2.6.24 package (now based on rc5) was added to Moblin already, and the binary package names were changed to linux-menlow-default-2.6.24 and linux-menlow-developer-2.6.24. The

     • Moblin project info page was updated at: http://www.moblin.org/projects/projects_kernel.php

  3. psb-kmd package was updated to build Gfx modules for both of these two kernels. The binary packages are psb-kmd-default-2.6.22, psb-kmd-developer-2.6.22 psb-kmd-default-2.6.24 and
     • psb-kmd-developer-2.6.24.
  4. The fset files for Moblin Image Creator got updated too.
  PSB / SLT HW Support The broken MWAIT/local APIC timer issue is assumed to be fixed in a new BIOS release through microcode patch to SLT. Once the fix is in a released BIOS and before we can enable-HT, we still need to take out the kernel boot option nolapic_timer in Moblin image-creator and then verify there is no boot hang and the extra interrupts issue goes away. This is the work our team needs to do. SDIO Feng is submitting a SDIO multi-function fix patch to Pierre Ossman's SDIO stack. The patch is still under review. Dabney Thermal patches No changes this week. USB Client Drivers No changes this week. The USBC solution as described before has been done and checked in Moblin.org already.

  PSB Gfx & Video Drivers Inuka is checking if the interrupts PSB Gfx Beta3 RC driver generating issue (120+ interrupts/second) is gone with the latest driver release. Inuka is also investigating a screen resolution issue which only happens on 2.6.24 kernel. With 2.6.24-rc5 and psb-kmd 2.6.24 module, the default X screen resolution is set to 1280x1024 instead of 1024x768. Power and Performance Testing/Optimization No changes this week. Grub fast boot/resume Martin enabled boot splash and resuming progress bar feature to grub package. Martin fixed the grub fast resume bug for 2.6.24 kernel and would check into the Moblin.org soon. Martin also discussed with EFI team to find how to take advantage of fast EFI bios booting. The fast EFI bios would only cost 2~3 second to hand over control right to boot loader after power up. In this case, Martin need port the fast boot patch from grub to elilo or grub2 which support EFI boot.

Midbrowser status

• Right before the Holiday break, Asac helped Jimmy resolved some of the FF3.0 and Midbrowser integration issues. Asac also created a debian package for Pat McGowan so that Pat can demo it at CES. A gold star for Asac. We are planning to move Midbdrowser development to FF3.0. FF3.0 beta2 based MIdbrowser will be used for Moblin Beta3 release. QA from PRC has experienced browser performance issues on Crownbeach. Someone has been assigned to look into these performance bugs. Continued to work on bug fixes.

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