Touchpad Palm Detection – the “confidence” feature

October 5, 2015

More info from the tech team:

The XPS 13 9343 utilizes the Microsoft Precision Touchpad specification in I2C mode. The specific feature within the Microsoft Precision Touchpad specification is the “Confidence” feature:

Confidence

Confidence is used to indicate that the contact does not have any dimensions (height or width) > 25mm that implies that it is not an unintended contact. Windows Precision Touchpads should not reject any contacts in firmware processing, but should forward all contacts to the host and indicate the confidence. After a device has deemed a contact to be unintentional, it shall clear the confidence bit for that contact report and all subsequent reports. Until a contact has been deemed unintentional, the device shall set the confidence bit for that contact being reported.

With that feature correctly implemented, palm rejection in I2C mode should work.

Driver feature development is something we work with our vendors on ensuring they develop, though in this case they won’t since the Microsoft Precision Touchpad specification is a feature that falls outside of vendor-specific needs. Synaptics (or any other touchpad vendor) is unlikely to implement this feature in the Linux i2c_hid driver because it’s not vendor-specific but instead a Microsoft specification.

Microsoft Precision Touchpad specification:

https://msdn.microsoft.com/en-us/library/windows/hardware/dn467314%28v=vs.85%29.aspx

HTH

Pau for now…


Kernel panics when switching wireless networks — XPS 13 developer edition 9343

September 1, 2015

In addition to the recent fixes I posted for the XPS 13 developer edition, here is one more from the team.

thanks

Broadcom bug

Some customers may experience an issue where their system crashes when switching wireless networks while running the factory install of Ubuntu 14.04. The issue appears to be a bug within the Broadcom wireless driver. You can follow the bug report at the following link:

https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1415880

The current recommended fix is to add the PPA at the following link to your repository list and then update your system to apply the fix:

https://launchpad.net/~inaddy/+archive/ubuntu/lp1415880

There are two methods to apply the patch detailed below:

Method 1

Run the following command to add the repositories using your package manager:

sudo add-apt-repository ppa:inaddy/lp1415880

Method 2

You can also add the repositories to your /etc/apt/sources.list file manually. Just add the following lines to the end of the sources.list file as in the screenshot below (requires root access).

deb http://ppa.launchpad.net/inaddy/lp1415880/ubuntu trusty main

deb-src http://ppa.launchpad.net/inaddy/lp1415880/ubuntu trusty main

After the repositories are added then update your system by running the following command:

sudo apt-get update && sudo apt-get upgrade

Kernel Panics

Extra credit reading

Pau for now…

 


Meet the project Sputnik team + Case Study

July 29, 2015

The other day Canonical came to Dell for a show and tell.  The Sputnik team, normally located in various buildings in Austin and Round Rock, all found ourselves in attendance at the event.  Here is a quick meet-the-team video introducing ourselves, saying where we’re from and declaring our favorite TV show.

Additionally,  here is a short case study giving the Project Sputnik history.

Pau for now…


XPS 13 developer edition on pause

July 20, 2015

We are aware of some issues that need to be addressed with our XPS 13 developer edition.  While patches have been made available (or coming soon), we are working to add these fixes to the systems at the factory.

Given that we want our customers to have the best experience possible, we have temporarily stopped new sales of the XPS 13 developer edition. Our desire is to bring back the system as soon as possible, but only after we have resolved the outstanding issues at the factory level. [Please realize that this DOES NOT AFFECT the windows version of the XPS 13]

We apologize for the inconvenience and thank you for your support and patience.

Reference

Pau for now…

 


Updated Developer Edition Knowledge base: XPS 13 and M3800

July 15, 2015

Once again we want to thank the entire community for your posts containing feedback and questions to the Dell TechCenter forum and this blog regarding the Ubuntu-based XPS 13 and M3800 developer editions.

Last month we posted links to four knowledge base articles addressing:  wireless drivers, keyboard repeat, suspend/resume and cursor freezes.   Today we are adding three more that have been hot topics recently: creating recovery media, OOBE crashing, and 15.04 UEFI install.  So we have all the articles in one place I have also included the previous ones below.

Knowledge Base links:

How to create recovery media for the XPS 13 9343 and Precision M3800 Developer Editions:

http://www.dell.com/support/article/us/en/19/HOW10851/en

Dell-Recovery Utility May Crash During Out of Box Experience:

http://www.dell.com/support/article/us/en/19/SLN298209/en

How to install Ubuntu on a Dell XPS 13 (9343) developer edition configured for UEFI:

http://www.dell.com/support/article/us/en/04/SLN297060/en

Trackpad cursor freezing issue:

http://www.dell.com/support/article/us/en/19/SLN297219/EN

May not resume from suspend running 14.04:

http://www.dell.com/support/article/us/en/04/SLN297551/en

Unwanted keyboard character repeat

http://www.dell.com/support/article/us/en/19/SLN297563/en

How to Install Broadcom Wireless Driver on XPS 13 9343 from Ubuntu 15.04 Install Media:

http://www.dell.com/support/article/uk/en/ukbsdt1/HOW10806/en

Leverage your support contracts

Remember, in addition to posting your feedback here, we encourage customers to utilize their support contracts and contact the included Dell support (either Consumer Support or ProSupport, depending on whether you purchased it from the Consumer or Small Business sections).  This will help us to officially track issues and tackle them systematically.

How to reach ProSupport:

Please continue to give us your feedback on the Developer Edition systems.

Pau for now…


Value Ubuntu systems available for consumers in US along with high end XPS 13 developer edition

June 8, 2015

In the last few weeks Dell has expanded its consumer line up with additional Ubuntu machines:  both the economical Inspiron series as well as the high-end, XPS 13 developer edition.

The new economical Ubuntu laptops are made up the Inspiron 14 Inspiron 14 3000 Series Laptop Ubuntu Edition3000 and Inspiron 15 3000 (14 & 15 denote the screen size) which each offer four configs.  All configs of both the 14 and 15 are non-touch.

Here are the specs:

Inspiron 14 3000 + Ubuntu 14.04 SP1

  • Celeron/2GB/500GB: $219.99
  • Celeron/2GB/500GB + optical drive from SAPP: $259.99
  • Pentium/4GB/500GB: $279.99
  • Pentium/4GB/500GB + 2 year mail in service (the above all come with 1 year mail in service): $329.99

Inspiron 15 3000 + Ubuntu 14.04 SP1

  • Celeron/4GB/500GB: $249
  • Celeron/4GB/500GB + optical drive from SAPP: $279.99
  • Pentium 4GB/500GB: $279.99
  • Pentium/4GB/500GB + 2 year mail in service (the above all come with 1 year mail in service): $349.99

XPS 13 developer edition

The smallest 13-inch on the planet with the worldThe XPS 13 developer edition, which in the states has been available only to businesses, is now available to consumers as well.  The four consumer configs are a bit different than those in business:

 

Check them out, you may find one just right for you.

Pau for now…


Developer Edition Knowledge base: XPS 13 and M3800

June 2, 2015

Update June 26:  How to Install Broadcom Wireless Driver on XPS 13 9343 from Ubuntu 15.04 Install Media

http://www.dell.com/support/article/uk/en/ukbsdt1/HOW10806/en

================================

We want to thank the entire community for your posts containing feedback and questions to the Dell TechCenter forum and on this blog regarding the XPS 13 and M3800 developer editions (Ubuntu).

In response to your feedback, here are the first three Knowledge Base articles focusing on the hottest issues.  This post and the Knowledge Base will be updated if new issues crop up.

  • Trackpad cursor freezing issue:

http://www.dell.com/support/article/SLN297219/en [to be promoted to the Dell archive hosted by Canonical – stay tuned].

  • May not resume from suspend running 14.04:

http://www.dell.com/support/article/SLN297551/en

  • Unwanted keyboard character repeat

http://www.dell.com/support/article/SLN297563/en

Remember, in addition to posting your feedback here, we encourage customers to utilize their support contracts and contact the included Dell support (either Consumer Support or ProSupport, depending on whether you purchased it from the Consumer or Small Business sections).  This will help us to officially track issues and tackle them systematically.

Please continue to give us your feedback on the Developer Edition systems.

June 3, update: How to reach ProSupport:

 

Thanks!

The Dell Sputnik team


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