I have reproduced it too, in 14.04 dock station (with display/s connected) hangs the laptop and it doesn't even boot if it's docked. But HDMI seems to work perfectly.
In 16.04 beta 2, connecting/disconnecting an HDMI display hangs the laptop. When it's connected to the dock while it's running it uses to hang too, but it sometimes works, or hangs after some seconds. It seems to work fine if no change is done in displays configuration while it's running. So the general situation improves a bit, except for HDMI that is worse in 16.04. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1560524 Title: Latitude E7470 crashes in DRM driver after connecting to DELL EPORT docking station Status in linux package in Ubuntu: Confirmed Status in xserver-xorg-video-intel package in Ubuntu: Confirmed Bug description: After attaching latitude E7470 laptop running Linux sashas-work 4.2.0-30-generic #36-Ubuntu SMP Fri Feb 26 00:58:07 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux Distributor ID: Ubuntu Description: Ubuntu 15.10 Release: 15.10 Codename: wily modinfo i915 filename: /lib/modules/4.2.0-30-generic/updates/dkms/i915.ko license: GPL and additional rights description: Intel Graphics author: Intel Corporation author: Tungsten Graphics, Inc. firmware: i915/skl_dmc_ver1.bin srcversion: D8F27CD62AA99DAC898A0F1 alias: pci:v00008086d00005A84sv*sd*bc03sc*i* alias: pci:v00008086d00001A84sv*sd*bc03sc*i* alias: pci:v00008086d00000A84sv*sd*bc03sc*i* alias: pci:v00008086d0000192Asv*sd*bc03sc*i* alias: pci:v00008086d0000192Bsv*sd*bc03sc*i* alias: pci:v00008086d00001926sv*sd*bc03sc*i* alias: pci:v00008086d0000191Dsv*sd*bc03sc*i* alias: pci:v00008086d0000191Asv*sd*bc03sc*i* alias: pci:v00008086d0000191Bsv*sd*bc03sc*i* alias: pci:v00008086d00001912sv*sd*bc03sc*i* alias: pci:v00008086d0000191Esv*sd*bc03sc*i* alias: pci:v00008086d00001921sv*sd*bc03sc*i* alias: pci:v00008086d00001916sv*sd*bc03sc*i* alias: pci:v00008086d0000190Asv*sd*bc03sc*i* alias: pci:v00008086d0000190Bsv*sd*bc03sc*i* alias: pci:v00008086d00001902sv*sd*bc03sc*i* alias: pci:v00008086d0000190Esv*sd*bc03sc*i* alias: pci:v00008086d00001906sv*sd*bc03sc*i* alias: pci:v00008086d000022B3sv*sd*bc03sc*i* alias: pci:v00008086d000022B2sv*sd*bc03sc*i* alias: pci:v00008086d000022B1sv*sd*bc03sc*i* alias: pci:v00008086d000022B0sv*sd*bc03sc*i* alias: pci:v00008086d0000162Dsv*sd*bc03sc*i* alias: pci:v00008086d0000162Asv*sd*bc03sc*i* alias: pci:v00008086d0000162Esv*sd*bc03sc*i* alias: pci:v00008086d0000162Bsv*sd*bc03sc*i* alias: pci:v00008086d00001626sv*sd*bc03sc*i* alias: pci:v00008086d00001622sv*sd*bc03sc*i* alias: pci:v00008086d0000161Dsv*sd*bc03sc*i* alias: pci:v00008086d0000161Asv*sd*bc03sc*i* alias: pci:v00008086d0000160Dsv*sd*bc03sc*i* alias: pci:v00008086d0000160Asv*sd*bc03sc*i* alias: pci:v00008086d0000161Esv*sd*bc03sc*i* alias: pci:v00008086d0000161Bsv*sd*bc03sc*i* alias: pci:v00008086d00001616sv*sd*bc03sc*i* alias: pci:v00008086d00001612sv*sd*bc03sc*i* alias: pci:v00008086d0000160Esv*sd*bc03sc*i* alias: pci:v00008086d0000160Bsv*sd*bc03sc*i* alias: pci:v00008086d00001606sv*sd*bc03sc*i* alias: pci:v00008086d00001602sv*sd*bc03sc*i* alias: pci:v00008086d00000155sv*sd*bc03sc*i* alias: pci:v00008086d00000157sv*sd*bc03sc*i* alias: pci:v00008086d00000F33sv*sd*bc03sc*i* alias: pci:v00008086d00000F32sv*sd*bc03sc*i* alias: pci:v00008086d00000F31sv*sd*bc03sc*i* alias: pci:v00008086d00000F30sv*sd*bc03sc*i* alias: pci:v00008086d00000D26sv*sd*bc03sc*i* alias: pci:v00008086d00000D16sv*sd*bc03sc*i* alias: pci:v00008086d00000D06sv*sd*bc03sc*i* alias: pci:v00008086d00000A2Esv*sd*bc03sc*i* alias: pci:v00008086d00000A1Esv*sd*bc03sc*i* alias: pci:v00008086d00000A0Esv*sd*bc03sc*i* alias: pci:v00008086d00000A26sv*sd*bc03sc*i* alias: pci:v00008086d00000A16sv*sd*bc03sc*i* alias: pci:v00008086d00000A06sv*sd*bc03sc*i* alias: pci:v00008086d00000C26sv*sd*bc03sc*i* alias: pci:v00008086d00000C16sv*sd*bc03sc*i* alias: pci:v00008086d00000C06sv*sd*bc03sc*i* alias: pci:v00008086d00000426sv*sd*bc03sc*i* alias: pci:v00008086d00000416sv*sd*bc03sc*i* alias: pci:v00008086d00000406sv*sd*bc03sc*i* alias: pci:v00008086d00000D2Esv*sd*bc03sc*i* alias: pci:v00008086d00000D1Esv*sd*bc03sc*i* alias: pci:v00008086d00000D0Esv*sd*bc03sc*i* alias: pci:v00008086d00000D2Bsv*sd*bc03sc*i* alias: pci:v00008086d00000D1Bsv*sd*bc03sc*i* alias: pci:v00008086d00000D0Bsv*sd*bc03sc*i* alias: pci:v00008086d00000D2Asv*sd*bc03sc*i* alias: pci:v00008086d00000D1Asv*sd*bc03sc*i* alias: pci:v00008086d00000D0Asv*sd*bc03sc*i* alias: pci:v00008086d00000D22sv*sd*bc03sc*i* alias: pci:v00008086d00000D12sv*sd*bc03sc*i* alias: pci:v00008086d00000D02sv*sd*bc03sc*i* alias: pci:v00008086d00000A2Bsv*sd*bc03sc*i* alias: pci:v00008086d00000A1Bsv*sd*bc03sc*i* alias: pci:v00008086d00000A0Bsv*sd*bc03sc*i* alias: pci:v00008086d00000A2Asv*sd*bc03sc*i* alias: pci:v00008086d00000A1Asv*sd*bc03sc*i* alias: pci:v00008086d00000A0Asv*sd*bc03sc*i* alias: pci:v00008086d00000A22sv*sd*bc03sc*i* alias: pci:v00008086d00000A12sv*sd*bc03sc*i* alias: pci:v00008086d00000A02sv*sd*bc03sc*i* alias: pci:v00008086d00000C2Esv*sd*bc03sc*i* alias: pci:v00008086d00000C1Esv*sd*bc03sc*i* alias: pci:v00008086d00000C0Esv*sd*bc03sc*i* alias: pci:v00008086d00000C2Bsv*sd*bc03sc*i* alias: pci:v00008086d00000C1Bsv*sd*bc03sc*i* alias: pci:v00008086d00000C0Bsv*sd*bc03sc*i* alias: pci:v00008086d00000C2Asv*sd*bc03sc*i* alias: pci:v00008086d00000C1Asv*sd*bc03sc*i* alias: pci:v00008086d00000C0Asv*sd*bc03sc*i* alias: pci:v00008086d00000C22sv*sd*bc03sc*i* alias: pci:v00008086d00000C12sv*sd*bc03sc*i* alias: pci:v00008086d00000C02sv*sd*bc03sc*i* alias: pci:v00008086d0000042Esv*sd*bc03sc*i* alias: pci:v00008086d0000041Esv*sd*bc03sc*i* alias: pci:v00008086d0000040Esv*sd*bc03sc*i* alias: pci:v00008086d0000042Bsv*sd*bc03sc*i* alias: pci:v00008086d0000041Bsv*sd*bc03sc*i* alias: pci:v00008086d0000040Bsv*sd*bc03sc*i* alias: pci:v00008086d0000042Asv*sd*bc03sc*i* alias: pci:v00008086d0000041Asv*sd*bc03sc*i* alias: pci:v00008086d0000040Asv*sd*bc03sc*i* alias: pci:v00008086d00000422sv*sd*bc03sc*i* alias: pci:v00008086d00000412sv*sd*bc03sc*i* alias: pci:v00008086d00000402sv*sd*bc03sc*i* alias: pci:v00008086d0000016Asv*sd*bc03sc*i* alias: pci:v00008086d0000015Asv*sd*bc03sc*i* alias: pci:v00008086d00000162sv*sd*bc03sc*i* alias: pci:v00008086d00000152sv*sd*bc03sc*i* alias: pci:v00008086d00000166sv*sd*bc03sc*i* alias: pci:v00008086d00000156sv*sd*bc03sc*i* alias: pci:v00008086d0000016Asv0000152Dsd00008990bc03sc*i* alias: pci:v00008086d00000126sv*sd*bc03sc*i* alias: pci:v00008086d00000116sv*sd*bc03sc*i* alias: pci:v00008086d00000106sv*sd*bc03sc*i* alias: pci:v00008086d0000010Asv*sd*bc03sc*i* alias: pci:v00008086d00000122sv*sd*bc03sc*i* alias: pci:v00008086d00000112sv*sd*bc03sc*i* alias: pci:v00008086d00000102sv*sd*bc03sc*i* alias: pci:v00008086d00000046sv*sd*bc03sc*i* alias: pci:v00008086d00000042sv*sd*bc03sc*i* alias: pci:v00008086d0000A011sv*sd*bc03sc*i* alias: pci:v00008086d0000A001sv*sd*bc03sc*i* alias: pci:v00008086d00002E92sv*sd*bc03sc*i* alias: pci:v00008086d00002E42sv*sd*bc03sc*i* alias: pci:v00008086d00002E32sv*sd*bc03sc*i* alias: pci:v00008086d00002E22sv*sd*bc03sc*i* alias: pci:v00008086d00002E12sv*sd*bc03sc*i* alias: pci:v00008086d00002E02sv*sd*bc03sc*i* alias: pci:v00008086d00002A42sv*sd*bc03sc*i* alias: pci:v00008086d00002A12sv*sd*bc03sc*i* alias: pci:v00008086d00002A02sv*sd*bc03sc*i* alias: pci:v00008086d000029D2sv*sd*bc03sc*i* alias: pci:v00008086d000029C2sv*sd*bc03sc*i* alias: pci:v00008086d000029B2sv*sd*bc03sc*i* alias: pci:v00008086d000029A2sv*sd*bc03sc*i* alias: pci:v00008086d00002992sv*sd*bc03sc*i* alias: pci:v00008086d00002982sv*sd*bc03sc*i* alias: pci:v00008086d00002972sv*sd*bc03sc*i* alias: pci:v00008086d000027AEsv*sd*bc03sc*i* alias: pci:v00008086d000027A2sv*sd*bc03sc*i* alias: pci:v00008086d00002772sv*sd*bc03sc*i* alias: pci:v00008086d00002592sv*sd*bc03sc*i* alias: pci:v00008086d0000258Asv*sd*bc03sc*i* alias: pci:v00008086d00002582sv*sd*bc03sc*i* alias: pci:v00008086d00002572sv*sd*bc03sc*i* alias: pci:v00008086d0000358Esv*sd*bc03sc*i* alias: pci:v00008086d00003582sv*sd*bc03sc*i* alias: pci:v00008086d00002562sv*sd*bc03sc*i* alias: pci:v00008086d00003577sv*sd*bc03sc*i* depends: drm_kms_helper,drm,video,i2c-algo-bit vermagic: 4.2.0-30-generic SMP mod_unload modversions parm: modeset:Use kernel modesetting [KMS] (0=disable, 1=on, -1=force vga console preference [default]) (int) parm: panel_ignore_lid:Override lid status (0=autodetect, 1=autodetect disabled [default], -1=force lid closed, -2=force lid open) (int) parm: semaphores:Use semaphores for inter-ring sync (default: -1 (use per-chip defaults)) (int) parm: enable_rc6:Enable power-saving render C-state 6. Different stages can be selected via bitmask values (0 = disable; 1 = enable rc6; 2 = enable deep rc6; 4 = enable deepest rc6). For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. default: -1 (use per-chip default) (int) parm: enable_dc:Enable power-saving display C-states. (-1=auto [default]; 0=disable; 1=up to DC5; 2=up to DC6) (int) parm: enable_fbc:Enable frame buffer compression for power savings (default: -1 (use per-chip default)) (int) parm: lvds_channel_mode:Specify LVDS channel mode (0=probe BIOS [default], 1=single-channel, 2=dual-channel) (int) parm: lvds_use_ssc:Use Spread Spectrum Clock with panels [LVDS/eDP] (default: auto from VBT) (int) parm: vbt_sdvo_panel_type:Override/Ignore selection of SDVO panel mode in the VBT (-2=ignore, -1=auto [default], index in VBT BIOS table) (int) parm: reset:Attempt GPU resets (default: true) (bool) parm: enable_hangcheck:Periodically check GPU activity for detecting hangs. WARNING: Disabling this can cause system wide hangs. (default: true) (bool) parm: enable_ppgtt:Override PPGTT usage. (-1=auto [default], 0=disabled, 1=aliasing, 2=full) (int) parm: enable_execlists:Override execlists usage. (-1=auto [default], 0=disabled, 1=enabled) (int) parm: enable_psr:Enable PSR (default: false) (int) parm: preliminary_hw_support:Enable preliminary hardware support. (int) parm: disable_power_well:Disable the power well when possible (default: true) (int) parm: enable_ips:Enable IPS (default: true) (int) parm: fastboot:Try to skip unnecessary mode sets at boot time (default: false) (bool) parm: prefault_disable:Disable page prefaulting for pread/pwrite/reloc (default:false). For developers only. (bool) parm: load_detect_test:Force-enable the VGA load detect code for testing (default:false). For developers only. (bool) parm: invert_brightness:Invert backlight brightness (-1 force normal, 0 machine defaults, 1 force inversion), please report PCI device ID, subsystem vendor and subsystem device ID to dri-de...@lists.freedesktop.org, if your machine needs it. It will then be included in an upcoming module version. (int) parm: disable_display:Disable display (default: false) (bool) parm: disable_vtd_wa:Disable all VT-d workarounds (default: false) (bool) parm: enable_cmd_parser:Enable command parsing (1=enabled [default], 0=disabled) (int) parm: use_mmio_flip:use MMIO flips (-1=never, 0=driver discretion [default], 1=always) (int) parm: mmio_debug:Enable the MMIO debug code for the first N failures (default: off). This may negatively affect performance. (int) parm: verbose_state_checks:Enable verbose logs (ie. WARN_ON()) in case of unexpected hw state conditions. (bool) parm: edp_vswing:Ignore/Override vswing pre-emph table selection from VBT (0=use value from vbt [default], 1=low power swing(200mV),2=default swing(400mV)) (int) parm: enable_guc_submission:Enable GuC submission (default:false) (bool) parm: guc_log_level:GuC firmware logging level (-1:disabled (default), 0-3:enabled) (int) sashas@sashas-work:~$ modinfo drm filename: /lib/modules/4.2.0-30-generic/updates/dkms/drm.ko license: GPL and additional rights description: DRM shared core routines author: Gareth Hughes, Leif Delgass, José Fonseca, Jon Smirl license: GPL and additional rights description: DRM bridge infrastructure author: Ajay Kumar <ajaykumar...@samsung.com> license: GPL and additional rights description: DRM panel infrastructure author: Thierry Reding <tred...@nvidia.com> srcversion: 813F2797A8E0182EAA7D2D5 depends: vermagic: 4.2.0-30-generic SMP mod_unload modversions parm: edid_fixup:Minimum number of valid EDID header bytes (0-8, default 6) (int) parm: debug:Enable debug output (int) parm: vblankoffdelay:Delay until vblank irq auto-disable [msecs] (0: never disable, <0: disable immediately) (int) parm: timestamp_precision_usec:Max. error on timestamps [usecs] (int) parm: timestamp_monotonic:Use monotonic timestamps (int) ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: gnome-terminal 3.16.2-1ubuntu4 ProcVersionSignature: Ubuntu 4.2.0-30.36-generic 4.2.8-ckt3 Uname: Linux 4.2.0-30-generic x86_64 ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 CurrentDesktop: Unity Date: Tue Mar 22 16:50:40 2016 ExecutablePath: /usr/lib/gnome-terminal/gnome-terminal-server InstallationDate: Installed on 2016-03-01 (21 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) SourcePackage: gnome-terminal UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1560524/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
