On Fri, 2017-06-02 at 14:10 +0200, Pascal de Bruijn wrote: > I'd appreciate any pointers you could give me as to the nature of the > above kernel messages, and whether they warrant further investigation. Hello Pascal, Please provide the output sent to the system log by the following command after having reproduced the lockup: echo w > /proc/sysrq-trigger Thanks, Bart.��.n��������+%������w��{.n����j�����{ay�ʇڙ���f���h������_�(�階�ݢj"��������G����?���&��