I eventually traced the filesystem corruption to a bug in the Apple firmware which can cause memory corruption after Linux is booted: https://bugzilla.kernel.org/show_bug.cgi?id=111781 On 29 January 2016 at 12:37, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote: > The timer error is definitely interesting The timer error bisected to a recent ACPI change. It causes visual glitches in Firefox. https://lkml.org/lkml/2016/2/3/273 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx