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I could finally help myself by viewing the file /var/log/messages which contains what dmesg outputs but also from previous boots. I'm not 100% sure that it actually is totally the exact same, but it helped me to troubleshoot my problem. Combine with less it is easier to handle as the file can grow large:

# less /var/log/messages

I hope this information is useful even if it might be not technically correct. It helped me in my case.