Error message on brand new WLC2504; "Failed to write...."

[gblomqvist]

Hello!

I have received a new WLC2504 for my lab, which is nice.... 

What's not so nice is that I get a mysterious error message on the console. It appeared when the wizard started at first boot and it apperars at every startup since.

I have gone through the wizard twice and reset to factory defaults in between but the error message persists. It looks like this :

(Cisco Controller)

Enter User Name (or 'Recover-Config' this one-time only to reset configuration to factory defaults)

User:  Failed to write I2C device: Input/output error
[i2c_wr_to_wdt_timer_reg]Got error -1 during tx.
User:

Is this unit ready for RMA/DOA or can I somehow force it into normal behaviour..?.. The GUI appears to be working normally.

Best Regards

Göran Blomqvsit

Sweden

[Rasika Nayanajith]

I would suggest talked to TAC & RMA if that is their view on this.

Normally you should not get any errors like this on console, if it is working properly

HTH

Rasika

**** Pls rate all useful responses  ****

[George Stefanick]

It seems like I've heard more about 2500 failures in the last 4 weeks then I have in the last 2 years .. 

[JRGC]

I have the same Issue, shows me the message on the console.

I Would like to know what impact can it have? Because it allows settings

[Scott Fella]

Reboot the WLC and see if everything stays and comes back fine. I would open a TAC case however and RMA the unit if possible. 

-Scott

[mukka]

I have the same Issue too, what impact can it have? 

User:  Failed to write I2C device: Input/output error
[i2c_wr_to_wdt_timer_reg]Got error -1 during tx. - 

-----------------------------------------------------------------------------------------------------

NAME: "Chassis"    , DESCR: "Cisco 2500 Series Wireless LAN Controller"
PID: AIR-CT2504-K9,  

System Information

Manufacturer's Name.............................. Cisco Systems Inc.

Product Name..................................... Cisco Controller

Product Version.................................. 7.6.130.0

Bootloader Version............................... 1.0.20

Field Recovery Image Version..................... 7.6.101.1

Firmware Version................................. PIC 19.0

-----------------------------------------------------------------------------------------------------

thanks,

Murilo 

[JRGC]

Hi Murilo

This issues don't have a impact.

But you can open case with Cisco TAC and make a RMA for replace hardware.

In my case replace the hardware.in two day.

[mukka]

thanks Gonzalezz

[Freemen]

Hi Murilo,

so is the TAC advice to RMA the device?

[Doug Charboneau]

Did you find a resolve to this issue. I also received a brand new wlc 2504 today and I keep seeing this notice after a reboot.

[Richard Marot]

I just had the same issue today and spoke with Cisco and they said "We will have to RMA this for you. We are aware of this issue".

Out of the Box and back into the Box

-R

[Anmol Vachan]

My team also have the same issue, it showing the message on the console,

I want to know what problem it could create with this.

[Aaron]

This message is seen specifically on a recent hardware rev of the 2504 controllers.  It is cosmetic and does not affect operation in any way.  TAC does not recommend RMA for this problem (as there is no guarantee that the replacement unit will not also show the same message.)

We plan to release a new FUS upgrade which will fix this problem - hopefully within the next month or two.  If you want the FUS fix sooner, open a TAC case and reference the following bug:

CSCuu46671    PIC image upgrade vis FUS

For further details, see the bug.

Cheers,

Aaron