troubles running apt-update

[MadleSs]

Hi guys,
When I try to run apt-update I'm getting this error
http://imgur.com/a/78W41

Could you help me to solve it?
Thanks in advance

[Frogs Hair]

It looks like there is no valid key for gfx from the following page. You can see in the terminal output that that the source is disabled due to a security risk. Perhaps whoever maintains gfx needs to update the key.

https://download.01.org/

[MadleSs]

Thanks for reply, but sorry what should I do with the link you provided Sorry I don't know

[Frogs Hair]

I'm not familiar with this repository or the package , do you know what it is ? I was using the link in hopes of discovering who maintains the listed items.

[MadleSs]

No I don't know what's this repository. Coul'd help me how to manually remove it? Thanks

[Frogs Hair]

Open software & updates and see if it's listed under the other software tab. From there you can disable / remove the source. The repository appears to be part of the Crosswalk project if that rings any bells.

[ian-weisser]

Your repositories are stored in /etc/apt/sources.list and /etc/apt/sources.list.d/
Simply open them (using 'sudo') with your favorite text editor (like 'nano'), and comment out or delete that repository.

[Frogs Hair]

I notice there is also a ppa manager installed , so you may want review what's installed there as well.

[MadleSs]

After removing .list file from sources.list.d problem is solved. Thank you guys