On Fri, 15 Mar 2013, Harald Arnesen wrote: > I have the same problem on my Lenovo T500. I think the graphics card is > involved. > > This laptop has "hybrid graphics" - one Intel GMA 4500MHD and one ATI > Mobility Radeon HD 3650. When I boot with the Intel card, I get "irq 16: > nobody cared" during boot, not when I boot with the ATI card. Confirming this. After a lot of hassle, I have bisected this reliably to commit 28c70f162a315bdcfbe0bf940a740ef8bfb918d6 Author: Daniel Vetter <daniel.vetter@xxxxxxxx> Date: Sat Dec 1 13:53:45 2012 +0100 drm/i915: use the gmbus irq for waits Adding Daniel, Imre and Daniel to CC while I will try to figure out what's happening in parallel. Attaching dmesg.txt from the machine with 28c70f162a as head, with drm.debug=0xe. -- Jiri Kosina SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html