Documentation Hardware Hardware Known issues
Update on August 3rd 2010:
On Palo43-R2750 boards, the ground signal of the reset button is not connected to the board GND.
Resolution for existing Palo43 expansion boards:
1. Solder a jumper wire from the right pad of C27 to the upper right corner pad of the Reset push button. See picture below.
2. Dab a small amount of glue where the wire is soldered and in the middle of the wire so that the wire will stay firmly in place.
Issue:
Resolution for future Palo43 expansion boards:
Palo43-R2909, currently in manufacturing, is planned to resolve this known issue.
Update on March 30th 2010:
Issue:
-- An LCD panel used in a configuration of Overo products should only function consistently if the Overo COM is running Linux 2.6.32 or higher as well as a recent version of U-Boot
-- If the Overo COM is running a lower version of Linux, sometimes the LCD panel turns white or remains completely dark.
Resolution
-- The LCD panel should function according to specification if the Overo COM is running Linux 2.6.32 and higher as well as a recent version of U-Boot.
-- Customers can update the software on their Overo COM to a recent version of U-Boot and Linux 2.6.32 or higher via the instructions posted here: Downloading pre-built images .
Each customer is reminded to update the software image on their Overo COM to a current release as other issues may have been resolved beyond this LCD panel issue.
A quick check to make sure the Overo COM has a recent image would be to note the Linux version that gets printed on the
console at boot time.
Also, ask Linux or look in the boot directory to see the
Linux version:
root@overo:~# uname -a
Linux overo 2.6.32 #1 Mon Mar 22 16:59:39 PDT 2010 armv7l GNU/Linux
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A Customer Experience
Here are some testing notes from an engineer who recenlty performed this update.
"I tested this particular feed:
http://www.sakoman.com/feeds/
I loaded a new MLO, u-boot, uImage and console rootfs onto my Chestnut43
board with an Overo Air COM using roughly the instructions from this
page:
http://www.gumstix.net/Setup-
Note that is important that MLO is copied onto the card FIRST and that
this is a fresh FAT partition!
To ensure no problems with U-Boot environment variables, I erased my
U-Boot environment variables by interrupting the boot sequence and
issuing this command:
> nand erase 0x00240000 0x00040000
Finally, I set the 'defaultdisplay' variable in U-Boot and booted the
board and the display came up with no problems".
Update: October 20th, 2009: This manufacturing issue has been resolved.
Update September 10, 2009: A small quantity of Overo COMs R2173 and early was built with the R26 module installed, in error. Removal of the
R26 resistor from these Overo Water COM allowed EHCI (USB host) to
function properly.
Update: August 18th, 2009: This issue hardware issue had been resolved.
As to SW, EHCI has been supported on all builds pretty much since the beginning -- once Gumstix discovered the R26 issue and removed it, the software immediately began to work.
Posted: January 27th, 2009
Gumstix has determined that the removal of the R26 resistor from versions R2173 and earlier of the Overo COM and running a Linux kernel built from 2.6.29-rc2 or higher allows EHCI (USB host) to function properly.
There has been discussion on the mailing list re the setup of EHCI on Overo COM, such as this thread which includes advice such as "you don't need 2.6.29 for EHCI host mode. The OE 2.6.28 recipe at the top of tree has EHCI enabled and it is functional".
September 2009: Gumstix has
improved the noise level of the LINE-IN signal on each Overo computer-on-module by approximately 10db.
Each Overo computer-on-module now available at www.gumstix.com has this improved audio subsystem.
Note that this improvement does not involve a fab change.
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May 2009: Gumstix is aware of quality concerns re audio output on the Overo series.
The company engineers are actively working on a resolution.
========================
August 2009: Each Overo Air and Overo Fire computer-on-module now available at www.gumstix.com has working Bluetooth.
July 2009: Gumstix recently shipped a number of Overo Air and Overo Fire COMs with defective wireless modules. While the wifi portion of the module worked properly, the Bluetooth portion did not.
COMs containing the defective modules will have the following message in the boot log:
Starting Bluetooth subsystem:
Initialization timed out.
March 2010 - Gumstix is no longer providing replacements for this known issue PKI 2009-4.
June 8, 2009 - This problem has been resolved as Gumstix is now shipping Tobi expansion boards that work with every Overo COM. The clearance between the Tobi expansion board and the components of the Overo Air COM or Overo Fire COM has been increased to allow proper connection of the Tobi expansion board will all Overo COMs.
Gumstix recommends that the revision 2392 of the Tobi expansion board only be used with the Overo Earth COM and Overo Water COM.
March 2010 - Gumstix is no longer providing replacement products for this known issue PKI 2009-3.
May 18, 2009 - Gumstix recommends that revision 2392 of the Tobi expansion board, which is currently being shipped from gumstix.com, only be used with the Overo Earth COM and Overo Water COM. Gumstix plans to have a revision of the Tobi expansion board that can be used with each and every Overo COM available within 5-7 business days from today.
Until this new revision of the Tobi expansion board is available from Gumstix, any customer who purchased only a revision 2392 Tobi expansion board with their Overo Fire COM or Overo Air COM may contact This e-mail address is being protected from spam bots, you need JavaScript enabled to view it to request that a summit board be shipped to them by Gumstix.
The clearance between the Tobi expansion board and the components of the Overo Air COM or Overo Fire COM will be increased in the next revision to allow proper connection of the Tobi expansion board will all Overo COMs.
May 6th update:
A new revision of the Tobi expansion board is in Gumstix development to allow Tobi to be used with every Overo COM.
For any customer with an Overo Air COM or Overo Fire COM and an r2392 Tobi board, a replacement of each Tobi board r2392 with a Tobi board (new version) will be available from Gumstix.
Update on May 5th, 2009:
Gumstix is now shipping Palo43 version 2391 in which this issue no longer exists.
Gumstix had discovered a manufacturing placement issue for the prior version 2297 of the Palo43 board in which the GPIO pushbuttons were rotated 90 degrees.
March 2010 - March 2010 - Gumstix is no longer providing replacements for this known issue PKI 2009-2.
Date: October 2008
Issue: Older versions of u-boot than -R1604 have a known problem with duplicate serial numbers and MAC addresses. This is a result of an error in the a hash function that takes Intel's factory-assigned serial number from the on-board flash to generate a MAC address.
Resolution: Gumstix Development believes that this hash function error was resolved by a patch which is included in u-boot version 1604.
As of October 2008, all verdex and connex motherboards are shipped with u-boot 1604 and with a Gumstix factory-issued serial number that is included in the OTP area of the on-board flash. Basix motherboards do not all include this feature.
Older motherboards, shipped with u-boot
versions before 1604, still require a hash of a known-unique serial
number that is embedded in the on-board Flash chip.
Any motherboard with
a u-boot version older than 1604 should have this u-boot updated to u-boot 1604 to
ensure correct hashing of the Flash serial number.
The change to a Gumstix factory-issued serial number will generate the MAC address now using the Gumstix OUI (OUI - Organizationally Unique Identifier, also referred to as 'company id'). Thus becoming a universally administered MAC address instead of a locally administered MAC address.
As of December 2008, Gumstix plans to discontinue the Gumstix Verdex product line from retail purchases at gumstix.com.
Gumstix recommends that all Verdex customers move to the Verdex Pro product line.
As of September 2008, Gumstix has introduced the verdex PRO product line to replace the verdex product line in OEM projects and is phasing out the verdex product line, as per the EOL information posted here.
The PXA270-based "verdex PRO" product line addresses a number of issues including the recent discontinuance by Molex of their 120-pin connector that Gumstix uses in the verdex product line.
Gumstix recommends that all customers designing an OEM product use the verdex PRO product line rather than the verdex product line.
Important: Take note of the "Introduction and key items" section section of the verdex PRO information to understand changes and relative issues.
.
Date: January 2008
Gumstix is shipping netmicroSD and netwifimicroSD boards of PCB version "PCB10039-R1700", as written next to the microSD connector.
Erroneous part: Some boards produced in late 2007 and shipped as recently as early January 2008 have proven to be faulty. These faulty boards can be identified by the chip labeled "U11" which has, as its second line, the identifying characters "WBH4245".
Issue: Any netmicroSD and netwifimicroSD boards with a U11 chip of this "WBH4245" identification will prevent attached verdex motherboard from booting.
Resolution: Customers that have a board(s) with the U11 chip labelled "WBH4245" needed to be replaced. An RMA for this issue is no longer available.
Note: PCB10039-R1700 Boards with the chip labelled "WB4245" (no letter H in the label) are NOT considered to be faulty under this notice.
Date: January 2008
Issue: CRC errors present when booting some recent verdex XL6P motherboards.
Features: At boot, the system emits well more than 10 of the following errors:
JFFS2 notice: (213) jffs2_get_inode_nodes: Node header CRC failed at 0x9199dc. {0080,0080,00800080,00800080}
Mailing list thread on this topic is posted here .
Resolution: An RMA for this issue is no longer available.
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