Thanks for all your efforts. It is really fun to see such an immediate response. Daniel Vetter <daniel.vetter at ffwll.ch> wrote: >On Sat, Apr 6, 2013 at 6:24 PM, George Amanakis <g_amanakis at yahoo.com> wrote: >> Indeed, I set explicitly drm_kms_helper.poll=0 since 2.35.x. See here: >> http://souriguha.wordpress.com/2011/03/08/how-to-solve-problem-with-thinkpadkslowd-kworker-on-linux-kernel-2-35-2-36/ >> >> Mouse and keyboard freezes intermittently some time after boot up. Actually >> the problem has to do with the GPU lagging and displaying the changes later. >> This results in an almost unusable desktop environment. Top will report the >> high CPU usage by 3-4 processes named kworker. With the >> drm_kms_helper.poll=0 it was until the 3.8.x kernel resolved. >> >> Since the 3.8.x kernels the exact same problem appeared again. The problem >> persists with the latest 3.9-rc5 too. > >Ah, so it seems to be a plain hpd irq storm (since you have massive >cpu loads), not edid readings taking forever (which would still cause >the mouse to lag horribly on 3.8 and earlier, but without cpu load). >The edid reading issues should be fixed in 3.9. For hpd irq storms >Egbert Eich from Suse is working on some patches to mitigate this. >Infrastructure prep work is already merged for 3.10, hopefully we can >merge the actual mitigation logic, too. > >I'll try no to forget to ping you once it's merged, so that you can >test it a bit. > >Cheers, Daniel >-- >Daniel Vetter >Software Engineer, Intel Corporation >+41 (0) 79 365 57 48 - http://blog.ffwll.ch
