On Fri, May 3, 2013 at 4:39 PM, Josh Boyer <jwboyer at gmail.com> wrote: > On Fri, May 03, 2013 at 02:25:57AM +0100, Dave Airlie wrote: >>The following changes since commit b6a9b7f6b1f21735a7456d534dc0e68e61359d2c: >> >> mm: prevent mmap_cache race in find_vma() (2013-04-04 11:46:28 -0700) >> >>are available in the git repository at: >> >> git://people.freedesktop.org/~airlied/linux.git drm-next >> >>for you to fetch changes up to 307b9c022720f9de90d58e51743e01e9a42aec59: >> >> qxl: update to new idr interfaces. (2013-05-03 10:37:20 +1000) >> >>---------------------------------------------------------------- > > So something in this batch of commits breaks a Macbook Pro Retina I have > sitting here. If I boot a Fedora kernel based on Linux > v3.9-8153-g5a148af, things boot up as they did previously with 3.9.0 and > are generally working fine. If I boot with a kernel based on Linux > v3.9-8933-gce85722, it will boot but as soon as plymouth starts, I get > nothing but static on the screen (like 1950s TV static). > > This machine is using i915 graphics, so I booted with nomodeset and did > the 'modprobe drm debug=15; modprobe i915 modeset=1' trick and it > repeated the failure with that. I've gathered a bunch of data like > dmesg, an intel_reg_snapshot, etc. It's all attached below. > > I'll start bisecting to see if I can narrow down the commit that broke > things, but I thought I would give a heads up now in case anyone has any > ideas. Looked through the log files and didn't see a clue. And usually DP tends to fail pretty noisily. So I think the bisect result would be interestin. Meanwhile: - do you have drm.debug=0xe dmesg for a working kernel, too? - is the panel completely dead or is just the backlight on (or panel on but backlight off)? Thanks, Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch
