hplip problems as normal user (works as root)

[laurentgedm]

Hello

I've juste re-emerged hplip because my printer (PhotoSmart 4180) printed bad things sometimes (like this).

Now:
- i can print as normal user
- i can access the printer as root (for ink levels, etc, using hp-levels, hp-toolbox,...)
- i cannot use hp-toolbox as normal user. The program starts, but it outputs a communication error with the printer:

[rsa4046]

Although this is not much help, I've found numerous problems with hp-toolbox and other hp-* tools (hplip same version as yours) refusing to recognize hardware (which otherwise worked fine), claiming it not to exist, etc., and then finding it later on. I never could resolve this issue.
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I love gentoo, but I am certainly no guru, despite what it says above.