On Wed, Aug 06, 2014 at 10:03:46PM +0300, Mihai Don?u wrote: > Hi, > > This just happened to me: > > Aug 6 21:37:37 mdontu-l kernel: ------------[ cut here ]------------ > Aug 6 21:37:37 mdontu-l kernel: WARNING: CPU: 3 PID: 4823 at > drivers/gpu/drm/i915/intel_display.c:3313 > intel_crtc_wait_for_pending_flips+0x16c/0x180() > Aug 6 21:37:37 mdontu-l kernel: Modules linked in: hdaps(O) tp_smapi(O) > thinkpad_ec(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) iwldvm iwlwifi e1000e > Aug 6 21:37:37 mdontu-l kernel: CPU: 3 PID: 4823 Comm: X Tainted: G > O 3.16.0-gentoo #2 > Aug 6 21:37:37 mdontu-l kernel: Hardware name: LENOVO 4178A4G/4178A4G, BIOS > 83ET76WW (1.46 ) 07/05/2013 > Aug 6 21:37:37 mdontu-l kernel: 0000000000000009 ffff88041d63fbf8 > ffffffff93c212a4 0000000000000000 > Aug 6 21:37:37 mdontu-l kernel: ffff88041d63fc30 ffffffff930e3a2d > 0000000000000000 ffff880427b7c000 > Aug 6 21:37:37 mdontu-l kernel: ffff880426f380a8 ffff880426ddf800 > ffff880426ddf800 ffff88041d63fc40 > Aug 6 21:37:37 mdontu-l kernel: Call Trace: > Aug 6 21:37:37 mdontu-l kernel: [<ffffffff93c212a4>] dump_stack+0x45/0x56 > Aug 6 21:37:37 mdontu-l kernel: [<ffffffff930e3a2d>] > warn_slowpath_common+0x7d/0xa0 > Aug 6 21:37:37 mdontu-l kernel: [<ffffffff930e3b0a>] > warn_slowpath_null+0x1a/0x20 > Aug 6 21:37:37 mdontu-l kernel: [<ffffffff936994dc>] > intel_crtc_wait_for_pending_flips+0x16c/0x180 > Aug 6 21:37:37 mdontu-l kernel: [<ffffffff931240f0>] ? > __wake_up_sync+0x20/0x20 > Aug 6 21:37:37 mdontu-l kernel: [<ffffffff9369c753>] > intel_crtc_disable_planes+0x33/0x1c0 > Aug 6 21:37:37 mdontu-l kernel: [<ffffffff9369cd20>] > ironlake_crtc_disable+0x50/0x970 > Aug 6 21:37:37 mdontu-l kernel: [<ffffffff936457bf>] ? > drm_modeset_lock+0x2f/0xd0 > Aug 6 21:37:37 mdontu-l kernel: [<ffffffff93c27fe2>] ? mutex_lock+0x12/0x30 > Aug 6 21:37:37 mdontu-l kernel: [<ffffffff9369e0af>] > intel_crtc_update_dpms+0x6f/0xa0 > Aug 6 21:37:37 mdontu-l kernel: [<ffffffff936a1f09>] > intel_connector_dpms+0x59/0x70 > Aug 6 21:37:37 mdontu-l kernel: [<ffffffff9363c8c9>] > drm_mode_obj_set_property_ioctl+0x399/0x3a0 > Aug 6 21:37:37 mdontu-l kernel: [<ffffffff9363c900>] > drm_mode_connector_property_set_ioctl+0x30/0x40 > Aug 6 21:37:37 mdontu-l kernel: [<ffffffff9362b83f>] drm_ioctl+0x1df/0x680 > Aug 6 21:37:37 mdontu-l kernel: [<ffffffff935cf8dc>] ? > backlight_generate_event+0x5c/0x80 > Aug 6 21:37:37 mdontu-l kernel: [<ffffffff935d0021>] ? > brightness_store+0x91/0xd0 > Aug 6 21:37:37 mdontu-l kernel: [<ffffffff93244a0c>] ? fsnotify+0x27c/0x350 > Aug 6 21:37:37 mdontu-l kernel: [<ffffffff9321b498>] > do_vfs_ioctl+0x2c8/0x490 > Aug 6 21:37:37 mdontu-l kernel: [<ffffffff9320b911>] ? > __sb_end_write+0x31/0x60 > Aug 6 21:37:37 mdontu-l kernel: [<ffffffff93209512>] ? vfs_write+0x1c2/0x200 > Aug 6 21:37:37 mdontu-l kernel: [<ffffffff9321b6a1>] SyS_ioctl+0x41/0x80 > Aug 6 21:37:37 mdontu-l kernel: [<ffffffff93c29b52>] > system_call_fastpath+0x16/0x1b > Aug 6 21:37:37 mdontu-l kernel: ---[ end trace 131b19886670715a ]---
If you can reproduce this somehow, please boot with drm.debug=0xe and attach the complete dmesg up to the WARNING. We seem to loose track of pageflips under obscure circumstances sometimes. We have more band-aids queued up, but fixing the underlying issue would be better ofc. Thanks, Daniel > > X appeared to have stopped rendering (or nothing goes through), but the > applications worked fine (I still had sound from a video). My video > card is: > > 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core > Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA > controller]) > Subsystem: Lenovo Device 21d0 > Flags: bus master, fast devsel, latency 0, IRQ 43 > Memory at f1400000 (64-bit, non-prefetchable) [size=4M] > Memory at e0000000 (64-bit, prefetchable) [size=256M] > I/O ports at 6000 [size=64] > Expansion ROM at <unassigned> [disabled] > Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- > Capabilities: [d0] Power Management version 2 > Capabilities: [a4] PCI Advanced Features > Kernel driver in use: i915 > > I was able to switch to the terminal and reboot. > > I suspect this is new in 3.16 and I've noticed some other oddities > since I upgraded from 3.15.8: > * when adjusting the screen brightness, the minimum setting is now > "LCD off"; > * when watching a video in fullscreen, I can see a flicker every 10s > or so. > > Thanks, > > -- > Mihai Don?u > _______________________________________________ > dri-devel mailing list > dri-devel at lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/dri-devel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch
