Is LGPLv3 against tivoization? Or only GPLv3?

Question

The LGPLv3 license text states:

4. e) Provide Installation Information, but only if you would otherwise be required to provide such information under section 6 of the GNU GPL, and only to the extent that such information is necessary to install and execute a modified version of the Combined Work produced by recombining or relinking the Application with a modified version of the Linked Version.

What does the bolded portion mean? Does it mean that providing installation information is only required if licensed under the GPLv3?

So, if a proprietary software links to LGPLv3-licensed library, it does not have to provide installation information?

Does this mean that LGPLv3 is not against tivoization, unless licensed under GPLv3 too (by viral effects)?

Embedded device makers who use secure boot for security or safety reasons, usually avoid using any software licensed under GPLv3 or LGPLv3 or AGPLv3, in order to avoid legal issues related to secure boot.

Answer 1

The LGPLv3 license is an extension of the GPLv3 license that grants certain additional permissions (like using the code together with proprietary, undisclosed code).

The clause 4e you quoted just reiterates that if you are in a situation where the base GPL license requires that you provide Installation Information, then the LGPL license also requires that you provide that Installation Information.

The situation where Installation Information needs to be provided is when the software is conveyed in, or with, or specifically for use in, a User Product.