Bug#914939: Tested other kernels

[Jakub Filo]

This bug seems related to 
https://bugs.freedesktop.org/show_bug.cgi?id=107573#c12 Kernel series 4.18 is 
affected by this bug. The bug is fixed in kernel series 4.19 (tested 
4.19.5-1~exp1 from experimental) 4.9.110-3 (stretch) is the last stretch kernel 
not affected. 4.9.130-2 (current stretch) is affected. 4.9.135-1 
(stretch-proposed) is affected.