Cisco Codec C40 remove wallpaper

[eugene.vorevodsky]

Hi all.

In our cisco telepresence installation we've faced an interesting issue:

the cisco c40 codec admin created a custom wallpaper, somehow this wallpaper was not suitable for this codec for 100%.

after he uploaded the wallpaper on the unit - it rebooted. then we see a cyclic reboot - the unit boots, we see a cisco logo, then we see a an overlay (part of the gui) on the monitor, after that codec tries to load the wallpaper, fails and went into reboot.

Are there any ways to manually delete this wallpaper from the codec's flash without hard resetting the codec?

[sekuzmin · Accepted solution]

Hi Eugene,

Try to log in as admin using ssh/console and execute following command:

     xConfiguration Video Wallpaper: Summersky

Best regards,

Sergey Kuzmin

[vikramdutta85 · Accepted solution]

Hi Eugene,

If there is a sufficient time for you  to ssh into the codec: try below mentioned command

ssh into the codec loging as root then him command >      touch /user/noboot

(make sure that root shoukd be enabled already  for this process to work).

once youve touched the noboot file by hitting the above  command

type TSH

youll move to admin

type the command given by Sergey:

Wall paper will change

// Vikram

[Dharmesh Nandoria · Accepted solution]

Hi ,

Once you are in root log in type following commnad .

rm /user/posters/wallpaper.png       

This will delete wall paper.

I am more intrested to test your wall paper in my lab , can you please provide it .

Generally wall paper should not cause reboot .

hth

kind regards.

Dharmmesh

[eugene.vorevodsky]

Hi there!

Thanks all for your support!

I've managed to recover the codec doing the following

1. Connect the unit via RS-232 console port

2. Right after the unit boots pressed b the c to enter the u-boot

3. Then i executed the following commands

setenv othbootargs allowroot noboot interactive

setenv console ttyS0

boot

4. then I typed enter till i get the following string

Run [/etc/init.d/S80main start] (Y/n/r/s/c/?)?

Typed s here to drop to a shell

5. In the shell -

$ rm /user/posters/wallpaper.png

6. reboot

That's it - the unit is booting in a normal way with black screen instead of wallpaper and with a gui overlay.

P.S. I didn't study the logs yet but will do soon - to doublecheck that the issue was with the wallpaper.

P.P.S. I'll try to get a copy of this "evil" wallpaper to send you, Dharmesh.

https://supportforums.cisco.com/docs/DOC-29766 - this doc helped me a lot. It has all the needed information regarding "low level" troubleshooting and recovering.

BTW - this issue is described int the CSCud96920 - Codecs crashes due to using incorrect "PNG" file in wallpaper.