Sorry - may be i am doing something completely wrong - but what you told me, did not work. Here what i did as "user": user@MACHINE:~> git clone git://kernel.opensuse.org/kernel-source.git Klone nach 'kernel-source'... remote: Counting objects: 307224, done. remote: Compressing objects: 100% (102272/102272), done. remote: Total 307224 (delta 203030), reused 302318 (delta 199515) Empfange Objekte: 100% (307224/307224), 886.14 MiB | 1.19 MiB/s, Fertig. L�se Unterschiede auf: 100% (203030/203030), Fertig. Pr�fe Konnektivit�t... Fertig. user@MACHINE:~> user@MACHINE:~> cd ker* user@MACHINE:~/kernel-source> user@MACHINE:~/kernel-source> git checkout master Bereits auf 'master' Ihr Branch ist auf dem selben Stand wie 'origin/master'. user@MACHINE:~/kernel-source> user@MACHINE:~/kernel-source> git bisect start user@MACHINE:~/kernel-source> user@MACHINE:~/kernel-source> git bisect good v3.9 fatal: Needed a single revision Ung�ltige Referenz-Eingabe: v3.9 user@MACHINE:~/kernel-source>