Michał Skrzypczak, perhaps collateral damage from https://launchpadlibrarian.net/292502425/dmesg.out : [ 1.876694] ------------[ cut here ]------------ [ 1.876704] WARNING: CPU: 2 PID: 43 at /build/linux-kOWph6/linux-4.4.0/drivers/gpu/drm/drm_irq.c:1326 drm_wait_one_vblank+0x1b5/0x1c0 [drm]() [ 1.876704] vblank wait timed out on crtc 0 [ 1.876711] Modules linked in: rtsx_pci_sdmmc i915_bpo intel_ips i2c_algo_bit e1000e psmouse drm_kms_helper syscopyarea ptp sysfillrect pps_core sysimgblt fb_sys_fops ahci drm rtsx_pci libahci wmi i2c_hid pinctrl_sunrisepoint video hid pinctrl_intel fjes [ 1.876712] CPU: 2 PID: 43 Comm: kworker/2:1 Not tainted 4.4.0-45-generic #66-Ubuntu [ 1.876713] Hardware name: Dell Inc. Latitude E5470/0C8FKJ, BIOS 1.7.3 06/15/2016 [ 1.876717] Workqueue: events output_poll_execute [drm_kms_helper] [ 1.876718] 0000000000000286 00000000f686cbad ffff880439b1ba78 ffffffff813f1fe3 [ 1.876719] ffff880439b1bac0 ffffffffc00c1b38 ffff880439b1bab0 ffffffff81081212 [ 1.876720] ffff88043530a800 0000000000000000 0000000000000000 0000000000000021 [ 1.876720] Call Trace: [ 1.876724] [<ffffffff813f1fe3>] dump_stack+0x63/0x90 [ 1.876726] [<ffffffff81081212>] warn_slowpath_common+0x82/0xc0 [ 1.876727] [<ffffffff810812ac>] warn_slowpath_fmt+0x5c/0x80 [ 1.876729] [<ffffffff810c3935>] ? finish_wait+0x55/0x70 [ 1.876734] [<ffffffffc00912e5>] drm_wait_one_vblank+0x1b5/0x1c0 [drm] [ 1.876736] [<ffffffff810c3dd0>] ? wake_atomic_t_function+0x60/0x60 [ 1.876759] [<ffffffffc0270aff>] intel_pre_plane_update+0x17f/0x190 [i915_bpo] [ 1.876776] [<ffffffffc02713d4>] intel_atomic_commit+0x3e4/0x14a0 [i915_bpo] [ 1.876786] [<ffffffffc00aabde>] ? drm_atomic_check_only+0x18e/0x590 [drm] [ 1.876793] [<ffffffffc00ab017>] drm_atomic_commit+0x37/0x60 [drm] [ 1.876798] [<ffffffffc0145e4f>] restore_fbdev_mode+0x22f/0x260 [drm_kms_helper] [ 1.876805] [<ffffffffc00a979a>] ? drm_modeset_lock_all_ctx+0x9a/0xb0 [drm] [ 1.876809] [<ffffffffc0148023>] drm_fb_helper_restore_fbdev_mode_unlocked+0x33/0x80 [drm_kms_helper] [ 1.876813] [<ffffffffc014809d>] drm_fb_helper_set_par+0x2d/0x50 [drm_kms_helper] [ 1.876815] [<ffffffffc0147fa2>] drm_fb_helper_hotplug_event+0xd2/0x120 [drm_kms_helper] [ 1.876835] [<ffffffffc028c2ee>] intel_fbdev_output_poll_changed+0x1e/0x30 [i915_bpo] [ 1.876838] [<ffffffffc013a7a7>] drm_kms_helper_hotplug_event+0x27/0x30 [drm_kms_helper] [ 1.876840] [<ffffffffc013a9a7>] output_poll_execute+0x197/0x1e0 [drm_kms_helper] [ 1.876842] [<ffffffff8109a3e5>] process_one_work+0x165/0x480 [ 1.876843] [<ffffffff8109a74b>] worker_thread+0x4b/0x4c0 [ 1.876844] [<ffffffff8109a700>] ? process_one_work+0x480/0x480 [ 1.876845] [<ffffffff8109a700>] ? process_one_work+0x480/0x480 [ 1.876846] [<ffffffff810a0928>] kthread+0xd8/0xf0 [ 1.876847] [<ffffffff810a0850>] ? kthread_create_on_node+0x1e0/0x1e0 [ 1.876849] [<ffffffff81831c4f>] ret_from_fork+0x3f/0x70 [ 1.876850] [<ffffffff810a0850>] ? kthread_create_on_node+0x1e0/0x1e0 [ 1.876851] ---[ end trace edf22ae43e187fea ]---
To see if this is already resolved in Ubuntu, could you please test http://cdimage.ubuntu.com/daily-live/current/ and advise to the results? -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1639203 Title: mouse cursor flashing on laptop screen after adding second monitor through usb 3.0 displaylink monitor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1639203/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
