Dmesg shows a drm problem (probably related to your dell hardware model (dig around on the net)):
Call Trace: [ 13.380327] dump_stack+0x63/0x81 [ 13.380330] __warn+0xcb/0xf0 [ 13.380333] warn_slowpath_fmt+0x5f/0x80 [ 13.380338] ? finish_wait+0x56/0x70 [ 13.380356] drm_wait_one_vblank+0x1aa/0x1b0 [drm] [ 13.380360] ? wake_atomic_t_function+0x60/0x60 [ 13.380383] ? drm_atomic_state_clear+0x30/0x30 [drm] [ 13.380471] intel_get_load_detect_pipe+0x5ff/0x650 [i915] [ 13.380506] intel_tv_detect+0x158/0x550 [i915] [ 13.380512] drm_helper_probe_single_connector_modes+0x2c4/0x520 [drm_kms_helper] [ 13.380518] drm_setup_crtcs+0x7b/0x9d0 [drm_kms_helper] [ 13.380521] ? update_load_avg+0x6b/0x510 [ 13.380522] ? set_next_entity+0xc3/0x1b0 [ 13.380527] drm_fb_helper_initial_config+0x79/0x3e0 [drm_kms_helper] [ 13.380529] ? __switch_to+0x23c/0x520 [ 13.380564] intel_fbdev_initial_config+0x18/0x30 [i915] [ 13.380565] async_run_entry_fn+0x37/0x150 [ 13.380567] process_one_work+0x1fc/0x4b0 [ 13.380569] worker_thread+0x4b/0x500 [ 13.380571] kthread+0x109/0x140 [ 13.380572] ? process_one_work+0x4b0/0x4b0 [ 13.380574] ? kthread_create_on_node+0x60/0x60 [ 13.380576] ret_from_fork+0x2c/0x40 [ 13.380578] ---[ end trace 667bb6ab8e236ef6 ]--- [ 13.520246] ------------[ cut here ]------------ [ 13.520267] WARNING: CPU: 0 PID: 101 at /build/linux-3PuzWO/linux-4.10.0/drivers/gpu/drm/drm_irq.c:1237 drm_wait_one_vblank+0x1aa/0x1b0 [drm] -- 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/1718575 Title: Screen blanks in less than 15 seconds To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1718575/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
