Additional info: reporter: libreport-2.3.0 WARNING: CPU: 0 PID: 57 at drivers/gpu/drm/i915/intel_display.c:901 intel_wait_for_vblank+0x1f7/0x200 [i915]() vblank wait on pipe A timed out Modules linked in: i915 i2c_algo_bit drm_kms_helper drm r8169 mii video CPU: 0 PID: 57 Comm: kworker/u8:5 Not tainted 3.18.7-200.fc21.i686 #1 Hardware name: TOSHIBA Satellite L355/Portable PC, BIOS 1.90 06/04/2009 Workqueue: events_unbound async_run_entry_fn 00000000 954cfef8 00000000 f6955c64 c0a4d516 f6955ca8 f6955c98 c04564e2 f84bbf64 f6955cc8 00000039 f84ba498 00000385 f8464377 00000385 f8464377 f6ba8000 00070040 00000004 f6955cb4 c045653e 00000009 f6955ca8 f84bbf64 Call Trace: [<c0a4d516>] dump_stack+0x41/0x52 [<c04564e2>] warn_slowpath_common+0x82/0xa0 [<f8464377>] ? intel_wait_for_vblank+0x1f7/0x200 [i915] [<f8464377>] ? intel_wait_for_vblank+0x1f7/0x200 [i915] [<c045653e>] warn_slowpath_fmt+0x3e/0x60 [<f8464377>] intel_wait_for_vblank+0x1f7/0x200 [i915] [<f849d7b9>] intel_tv_detect+0x209/0x5d0 [i915] [<f7faf888>] drm_helper_probe_single_connector_modes_merge_bits+0x2c8/0x410 [drm_kms_helper] [<f7faf9e7>] drm_helper_probe_single_connector_modes+0x17/0x20 [drm_kms_helper] [<f7fb63d1>] drm_fb_helper_probe_connector_modes.isra.3+0x41/0x60 [drm_kms_helper] [<f7fb7168>] drm_fb_helper_initial_config+0x48/0x380 [drm_kms_helper] [<c04020ec>] ? __switch_to+0x11c/0x490 [<c0a4ef3f>] ? __schedule+0x25f/0x820 [<f847d3e9>] intel_fbdev_initial_config+0x19/0x20 [i915] [<c047288e>] async_run_entry_fn+0x4e/0x170 [<c07d615a>] ? deferred_probe_work_func+0xba/0xd0 [<c0469f90>] ? pwq_dec_nr_in_flight+0x40/0x90 [<c046b6c8>] process_one_work+0x118/0x370 [<c04b0b7d>] ? try_to_del_timer_sync+0x4d/0x80 [<c046bed1>] worker_thread+0x41/0x430 [<c046be90>] ? rescuer_thread+0x240/0x240 [<c0470253>] kthread+0xb3/0xd0 [<c0a52f81>] ret_from_kernel_thread+0x21/0x30 [<c04701a0>] ? kthread_create_on_node+0x130/0x130
Created attachment 996423 [details] File: dmesg
Description of problem: Happened at boot time Version-Release number of selected component: kernel Additional info: reporter: libreport-2.3.0 cmdline: BOOT_IMAGE=/vmlinuz-3.18.7-200.fc21.x86_64 root=/dev/mapper/fedora-root ro rd.lvm.lv=fedora/swap rd.md=0 rd.dm=0 vconsole.keymap=us rd.luks=0 vconsole.font=latarcyrheb-sun16 rd.lvm.lv=fedora/root rhgb quiet LANG=en_US.UTF-8 kernel: 3.18.7-200.fc21.x86_64 runlevel: unknown type: Kerneloops Truncated backtrace: WARNING: CPU: 1 PID: 66 at drivers/gpu/drm/i915/intel_display.c:901 intel_wait_for_vblank+0x225/0x230 [i915]() vblank wait on pipe A timed out Modules linked in: i915 i2c_algo_bit drm_kms_helper drm r8169 mii video ums_realtek uas hid_logitech_dj usb_storage CPU: 1 PID: 66 Comm: kworker/u8:5 Not tainted 3.18.7-200.fc21.x86_64 #1 Hardware name: TOSHIBA Satellite Pro L300/Portable PC, BIOS 2.20 12/09/2009 Workqueue: events_unbound async_run_entry_fn 0000000000000000 000000007846d6d6 ffff8800b1213a18 ffffffff8175e686 0000000000000000 ffff8800b1213a70 ffff8800b1213a58 ffffffff810991d1 0000000000000000 ffff8800361c0000 0000000000070040 0000000000000000 Call Trace: [<ffffffff8175e686>] dump_stack+0x46/0x58 [<ffffffff810991d1>] warn_slowpath_common+0x81/0xa0 [<ffffffff81099245>] warn_slowpath_fmt+0x55/0x70 [<ffffffffa0135545>] intel_wait_for_vblank+0x225/0x230 [i915] [<ffffffffa017379f>] intel_tv_detect+0x23f/0x5e0 [i915] [<ffffffff810fd4e0>] ? internal_add_timer+0xb0/0xb0 [<ffffffffa00c4be3>] drm_helper_probe_single_connector_modes_merge_bits+0x303/0x460 [drm_kms_helper] [<ffffffffa00c4d53>] drm_helper_probe_single_connector_modes+0x13/0x20 [drm_kms_helper] [<ffffffffa00cc360>] drm_fb_helper_probe_connector_modes.isra.3+0x50/0x70 [drm_kms_helper] [<ffffffffa00cd26c>] drm_fb_helper_initial_config+0x5c/0x3d0 [drm_kms_helper] [<ffffffff81012651>] ? __switch_to+0x151/0x5f0 [<ffffffffa0150c7b>] intel_fbdev_initial_config+0x1b/0x20 [i915] [<ffffffff810babba>] async_run_entry_fn+0x4a/0x150 [<ffffffff810b245d>] process_one_work+0x14d/0x400 [<ffffffff810b2deb>] worker_thread+0x6b/0x480 [<ffffffff810b2d80>] ? rescuer_thread+0x2a0/0x2a0 [<ffffffff810b801a>] kthread+0xea/0x100 [<ffffffff810b7f30>] ? kthread_create_on_node+0x1b0/0x1b0 [<ffffffff8176537c>] ret_from_fork+0x7c/0xb0 [<ffffffff810b7f30>] ? kthread_create_on_node+0x1b0/0x1b0
*** This bug has been marked as a duplicate of bug 1144620 ***