On 2014-11-01 18:08, Christian Kastner wrote: > I have a Macbook Air (2013) (6,2) which until recently was working > flawlessly with Debian unstable, which I use almost exclusively on that > machine. I did keep the OSX installation, mainly because it's the only > way to get firmware updates. > > Recently, in a moment of weakness, I said "yes" to the offer of > upgrading OSX to Yosemite. Since then, whenever I boot Debian, there is > an i915-related interrupt storm, with a kworker thread constantly > running at 70%. > > Downgrading OSX back to Mavericks did not help. Apparently Yosemite > included firmware updates, as within OSX I am shown version numbers that > are so new they aren't even listed on Apple's homepage yet. > > Here's what I see: > > $ GPE=/sys/firmware/acpi/interrupts/gpe66 > $ while true; doe cat $GPE; sleep 1; done > 727268 enabled > 757981 enabled > 788576 enabled > 807337 enabled > 828426 enabled > ... > > I've tested this with 3.16 and 3.17 kernels; I was using the former for > about a month now without issue. > > When I boot with modprobe.blacklist=i915, the issue disappears. > > Does anyone have an idea what could be going on? Good news: the recent update of OSX to 10.10.2 contained another silent firmware update, and it appears that this update resolved the issue. Regards, Christian _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
