(In reply to Takashi Iwai from comment #1) > Could you try the kernel in OBS Kernel:stable repo? > If it still doesn't work, please give the whole kernel message after boot > (the output of dmesg). Thanks for the reply. I can not keep up with the problem, the main board of the machine has now been damaged by an electric charge. It's a shame, because I had many days in search of the solution of this problem. Thank you very much Takashi Iwai