Am 26. Juni 2023 10:56:21 MESZ schrieb "Carlos E. R." <robin.listas@telefonica.net>:
>On 2023-06-26 10:16, Axel Braun wrote:
>> Hello Manfred,
>>
>> Am Sonntag, 25. Juni 2023, 20:02:46 CEST schrieb Manfred Neubauer:
>>
>>> please excuse me. It lasts some time to overcome my internal resistence to send an email to Comunity.
>>> First of all during installation I got on screen an information: 'violation of signature'.
>>> I installed opensuse.15.5 dispite a warning.
>>
>> you can check the md5 sum of the installation media to verify media is correct. Does that match?
>
>Only the DVD can be verified on boot. AFAIK, the USB can not be verified, and last time I tried it will say that the verification failed. The correct result would be that the boot option should refuse to do the verification unless it is an actual DVD, it confuses users. I have not tried this in recent years, though.

With installation media check I meant the downloaded ISO. For sure the checksum will be different *after* burned to the DVD / USB stick

>Another possible verification at boot is the UEFI key. An enterprise laptop could refuse to boot the openSUSE media until the proper key is enrolled in the UEFI aka BIOS.

switch secure boot off?

>It is unclear what Manfred is talking about.

yes

>...
>
>> Except spreading conspiracy theories a more structured appraoch to problem solving would be the way to go. Maybe you had a hardware problem with your Zen book, but I doubt it was related to Tumbleweed.
>
>Indeed.
>
>Thank you for your effort at deciphering his post :-)

welcome :-)