I have same problem with i5-5200U (Lenovo E550). I use the notebook with more monitors (on VGA) and only one (HP Compaq LA2306x) is affected by this bug.
I have this knowledges about that: - it's not connected with display resolution - no syslog/dmesg messages - all power management functions are turned off (monitor and pc) - its quite random, but only same fails causes switching the monitor off...sometimes it only make black horizontal line over the screen for aprox 50ms ... I guess it some glitch on clock signal - there is no problem with VGA cable :-) - DDC/CI is turned off (on monitor) Linux 4.5.0-2-amd64 #1 SMP Debian 4.5.3-2 (2016-05-08) x86_64 GNU/Linux xserver-xorg-video-intel - 2:2.99.917+git20160522-1~bpo8+1 Thank you for fixing it;) cat /var/log/Xorg.0.log [398650.361] X.Org X Server 1.16.4 Release Date: 2014-12-20 [398650.361] X Protocol Version 11, Revision 0 [398650.361] Build Operating System: Linux 3.16.0-4-amd64 x86_64 Debian [398650.361] Current Operating System: Linux cepelka-notebook 4.5.0-2-amd64 #1 SMP Debian 4.5.3-2 (2016-05-08) x86_64 [398650.361] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.5.0-2-amd64 root=UUID=ddc15e35-db8c-40c7-95a8-7c6ef8a3033a ro intel_iommu=igfx_off [398650.361] Build Date: 11 February 2015 12:32:02AM [398650.361] xorg-server 2:1.16.4-1 (http://www.debian.org/support) [398650.361] Current version of pixman: 0.33.6 [398650.361] Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. [398650.361] Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. [398650.361] (==) Log file: "/var/log/Xorg.0.log", Time: Tue Jun 14 10:36:19 2016 [398650.361] (==) Using config file: "/etc/X11/xorg.conf" [398650.361] (==) Using config directory: "/etc/X11/xorg.conf.d" [398650.361] (==) Using system config directory "/usr/share/X11/xorg.conf.d" [398650.361] (==) ServerLayout "X.org Configured" [398650.361] (**) |-->Screen "Screen0" (0) [398650.361] (**) | |-->Monitor "Monitor0" [398650.361] (**) | |-->Device "Card0" [398650.361] (**) |-->Input Device "Mouse0" [398650.361] (**) |-->Input Device "Keyboard0" [398650.361] (==) Automatically adding devices [398650.361] (==) Automatically enabling devices [398650.361] (==) Automatically adding GPU devices [398650.362] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist. [398650.362] Entry deleted from font path. [398650.362] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist. [398650.362] Entry deleted from font path. [398650.362] (**) FontPath set to: /usr/share/fonts/X11/misc, /usr/share/fonts/X11/100dpi/:unscaled, /usr/share/fonts/X11/75dpi/:unscaled, /usr/share/fonts/X11/Type1, /usr/share/fonts/X11/100dpi, /usr/share/fonts/X11/75dpi, built-ins, /usr/share/fonts/X11/misc, /usr/share/fonts/X11/100dpi/:unscaled, /usr/share/fonts/X11/75dpi/:unscaled, /usr/share/fonts/X11/Type1, /usr/share/fonts/X11/100dpi, /usr/share/fonts/X11/75dpi, built-ins [398650.362] (**) ModulePath set to "/usr/lib/xorg/modules" [398650.362] (WW) Hotplugging is on, devices using drivers 'kbd', 'mouse' or 'vmmouse' will be disabled. [398650.362] (WW) Disabling Mouse0 [398650.362] (WW) Disabling Keyboard0 [398650.362] (II) Loader magic: 0x55672cbb4d80 [398650.362] (II) Module ABI versions: [398650.362] X.Org ANSI C Emulation: 0.4 [398650.362] X.Org Video Driver: 18.0 [398650.362] X.Org XInput driver : 21.0 [398650.362] X.Org Server Extension : 8.0 [398650.362] (II) xfree86: Adding drm device (/dev/dri/card0) [398650.364] (--) PCI:*(0:0:2:0) 8086:1616:17aa:5020 rev 9, Mem @ 0xe0000000/16777216, 0xc0000000/536870912, I/O @ 0x00003000/64 [398650.364] (II) "glx" will be loaded. This was enabled by default and also specified in the config file. [398650.364] (II) LoadModule: "glx" [398650.364] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so [398650.365] (II) Module glx: vendor="X.Org Foundation" [398650.365] compiled for 1.16.4, module version = 1.0.0 [398650.365] ABI class: X.Org Server Extension, version 8.0 [398650.365] (==) AIGLX enabled [398650.365] (II) LoadModule: "intel" [398650.365] (II) Loading /usr/lib/xorg/modules/drivers/intel_drv.so [398650.365] (II) Module intel: vendor="X.Org Foundation" [398650.365] compiled for 1.16.4, module version = 2.99.917 [398650.365] Module class: X.Org Video Driver [398650.365] ABI class: X.Org Video Driver, version 18.0 [398650.365] (II) intel: Driver for Intel(R) Integrated Graphics Chipsets: i810, i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G, 915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM, Pineview G, 965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33, GM45, 4 Series, G45/G43, Q45/Q43, G41, B43 [398650.365] (II) intel: Driver for Intel(R) HD Graphics: 2000-6000 [398650.365] (II) intel: Driver for Intel(R) Iris(TM) Graphics: 5100, 6100 [398650.365] (II) intel: Driver for Intel(R) Iris(TM) Pro Graphics: 5200, 6200, P6300 [398650.365] (++) using VT number 7 [398650.371] (II) intel(0): Using Kernel Mode Setting driver: i915, version 1.6.0 20151218 [398650.371] (II) intel(0): SNA compiled: xserver-xorg-video-intel 2:2.99.917+git20160522-1~bpo8+1 (Vincent Cheng <vch...@debian.org>) [398650.371] (II) intel(0): SNA compiled for use with valgrind [398650.372] (--) intel(0): Integrated Graphics Chipset: Intel(R) HD Graphics 5500 [398650.372] (--) intel(0): CPU: x86-64, sse2, sse3, ssse3, sse4.1, sse4.2, avx, avx2; using a maximum of 2 threads [398650.372] (==) intel(0): Depth 24, (--) framebuffer bpp 32 [398650.372] (==) intel(0): RGB weight 888 [398650.372] (==) intel(0): Default visual is TrueColor [398650.372] (II) intel(0): Output eDP1 using monitor section Monitor0 [398650.392] (--) intel(0): Found backlight control interface intel_backlight (type 'raw') for output eDP1 [398650.392] (II) intel(0): Enabled output eDP1 [398650.392] (II) intel(0): Output DP1 has no monitor section [398650.392] (II) intel(0): Enabled output DP1 [398650.392] (II) intel(0): Output HDMI1 has no monitor section [398650.392] (II) intel(0): Enabled output HDMI1 [398650.392] (II) intel(0): Output DP2 has no monitor section [398650.392] (II) intel(0): Enabled output DP2 [398650.392] (II) intel(0): Output HDMI2 has no monitor section [398650.392] (II) intel(0): Enabled output HDMI2 [398650.392] (--) intel(0): Using a maximum size of 256x256 for hardware cursors [398650.392] (II) intel(0): Output VIRTUAL1 has no monitor section [398650.392] (II) intel(0): Enabled output VIRTUAL1 [398650.392] (--) intel(0): Output eDP1 using initial mode 1920x1080 on pipe 0 [398650.392] (--) intel(0): Output DP2 using initial mode 1920x1080 on pipe 2 [398650.392] (==) intel(0): TearFree disabled [398650.392] (==) intel(0): DPI set to (96, 96) [398650.392] (II) Loading sub module "dri2" [398650.392] (II) LoadModule: "dri2" [398650.392] (II) Module "dri2" already built-in [398650.392] (II) Loading sub module "present" [398650.392] (II) LoadModule: "present" [398650.392] (II) Module "present" already built-in [398650.393] (==) Depth 24 pixmap format is 32 bpp [398650.393] (II) intel(0): SNA initialized with Broadwell (gen8) backend [398650.393] (==) intel(0): Backing store enabled [398650.393] (==) intel(0): Silken mouse enabled [398650.393] (II) intel(0): HW Cursor enabled [398650.393] (II) intel(0): RandR 1.2 enabled, ignore the following RandR disabled message. [398650.393] (==) intel(0): DPMS enabled [398650.393] (==) intel(0): Display hotplug detection enabled [398650.393] (II) intel(0): [DRI2] Setup complete [398650.393] (II) intel(0): [DRI2] DRI driver: i965 [398650.393] (II) intel(0): [DRI2] VDPAU driver: va_gl [398650.393] (II) intel(0): direct rendering: DRI2 enabled [398650.393] (II) intel(0): hardware support for Present enabled [398650.393] (--) RandR disabled [398650.397] (II) SELinux: Disabled on system [398650.403] (II) AIGLX: enabled GLX_MESA_copy_sub_buffer [398650.403] (II) AIGLX: enabled GLX_ARB_create_context [398650.403] (II) AIGLX: enabled GLX_ARB_create_context_profile [398650.403] (II) AIGLX: enabled GLX_EXT_create_context_es2_profile [398650.403] (II) AIGLX: enabled GLX_INTEL_swap_event [398650.403] (II) AIGLX: enabled GLX_SGI_swap_control and GLX_MESA_swap_control [398650.403] (II) AIGLX: enabled GLX_EXT_framebuffer_sRGB [398650.403] (II) AIGLX: enabled GLX_ARB_fbconfig_float [398650.403] (II) AIGLX: GLX_EXT_texture_from_pixmap backed by buffer objects [398650.403] (II) AIGLX: enabled GLX_ARB_create_context_robustness [398650.403] (II) AIGLX: Loaded and initialized i965 [398650.403] (II) GLX: Initialized DRI2 GL provider for screen 0 [398650.406] (II) intel(0): switch to mode 1920x1080@60.0 on eDP1 using pipe 0, position (0, 0), rotation normal, reflection none [398650.406] (II) intel(0): switch to mode 1920x1080@60.0 on DP2 using pipe 2, position (0, 0), rotation normal, reflection none [398650.406] (II) intel(0): Setting screen physical size to 508 x 285 [398650.442] (II) config/udev: Adding input device Power Button (/dev/input/event4) [398650.442] (**) Power Button: Applying InputClass "evdev keyboard catchall" [398650.442] (II) LoadModule: "evdev" [398650.442] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so [398650.443] (II) Module evdev: vendor="X.Org Foundation" [398650.443] compiled for 1.16.0, module version = 2.9.0 [398650.443] Module class: X.Org XInput Driver [398650.443] ABI class: X.Org XInput driver, version 21.0 [398650.443] (II) Using input driver 'evdev' for 'Power Button' -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1580219 Title: screen switches off To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1580219/+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