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[Bug 1562076] Re: Ubuntu freezes a few seconds after plugin a screen

 

Hi,

I have a Zenbook UX303UA running Ubuntu 16.04 (4.4.0-22-generic x86_64),
fresh install and I have the same problem.

CASE 1:

If connect my Zenbook via HDMI to my Sony Bravia smart TV, the display
shows up on the TV, but everything freezes. No keys work, cursor will
not move, and must do a hard reboot.

CASE 2:

If I boot the laptop with the HDMI cable plugged in, then I have two
displays and everything works just fine.

CASE 3:

If I remove the cable after CASE 2, things are still fine, but if I now
plug it back in then the laptop crashes as in CASE 1.


----SNIPPED--------------
00:02.0 VGA compatible controller: Intel Corporation Sky Lake Integrated Graphics (rev 07) (prog-if 00 [VGA controller])
	Subsystem: ASUSTeK Computer Inc. Skylake Integrated Graphics
	Flags: bus master, fast devsel, latency 0, IRQ 125
	Memory at de000000 (64-bit, non-prefetchable) [size=16M]
	Memory at c0000000 (64-bit, prefetchable) [size=256M]
	I/O ports at f000 [size=64]
	Expansion ROM at <unassigned> [disabled]
	Capabilities: [40] Vendor Specific Information: Len=0c <?>
	Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
	Capabilities: [ac] MSI: Enable+ Count=1/1 Maskable- 64bit-
	Capabilities: [d0] Power Management version 2
	Capabilities: [100] #1b
	Capabilities: [200] Address Translation Service (ATS)
	Capabilities: [300] #13
	Kernel driver in use: i915_bpo
	Kernel modules: i915_bpo

----SNIPPED--------------


Let me know if there's anything else that will help!

Cheers,

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https://bugs.launchpad.net/bugs/1562076

Title:
  Ubuntu freezes a few seconds after plugin a screen

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Hello,

  I'm running the latest beta of Ubuntu 16.04 Xenial on an ASUS UX303LA (Intel i5 6200U, Intel HD 520) and each time I plug a screen, using either HDMI or Mini DisplayPort, my laptop freezes after a few seconds.
  Alt + Function keys doesn't work, sound stops and I'm forced to shutdown the computer by long-pressing its Power button.

  I attached syslog, kern.log and Xorg.0.log for further information.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-15-generic 4.4.0-15.31
  ProcVersionSignature: Ubuntu 4.4.0-15.31-generic 4.4.6
  Uname: Linux 4.4.0-15-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  axel       1632 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Fri Mar 25 17:34:54 2016
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=2acdb9a2-2923-4550-9019-32e79d136c4d
  InstallationDate: Installed on 2016-02-25 (29 days ago)
  InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Release amd64 (20151021)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 002: ID 0bda:57cb Realtek Semiconductor Corp. 
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: ASUSTeK COMPUTER INC. UX303UA
  ProcEnviron:
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-15-generic.efi.signed root=UUID=de727ab1-db17-453b-a371-4a143f37dcad ro noprompt persistent quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-15-generic N/A
   linux-backports-modules-4.4.0-15-generic  N/A
   linux-firmware                            1.157
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-02-25 (28 days ago)
  dmi.bios.date: 08/27/2015
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: UX303UA.202
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: UX303UA
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: ATN12345678901234567
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK COMPUTER INC.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX303UA.202:bd08/27/2015:svnASUSTeKCOMPUTERINC.:pnUX303UA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX303UA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: UX303UA
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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